🎯 Chapter 1A: Skilled Performance & Acquisition of Skill

What makes a skilled performer, how skills are learned, feedback, and designing practice schedules

1. Characteristics of Skilled Performance

Highly skilled performers demonstrate a range of qualities in their skill executions and movements. Here are the four key characteristics of a skilled performance:

Kinaesthetic Awareness When an athlete uses information sent to them by sensors in their muscles, joints and tendons to quickly and accurately adjust their movements to achieve success when performing a skill. Essentially — the ability to "feel" how your body is moving without looking at it.
💡 Analogy Kinaesthetic awareness is like having a built-in sat-nav for your body. A skilled footballer doesn't need to look at their feet to control the ball — their muscles and joints are constantly sending signals telling their brain exactly where every body part is. That's kinaesthetic awareness!
Anticipation The ability of a performer to predict decisions or movements from opponents and therefore decide on an appropriate action to gain an advantage. A skilled performer reads the game ahead of time rather than just reacting.
Consistency The ability of a performer to execute skills with a high success rate over a sustained period of time. A skilled performer doesn't just do it once — they can do it again and again under pressure.
Technical Execution Use of appropriate skill techniques that are controlled and accurate, which often save energy and produce better and more consistent results.

Indicators of a Skilled Performance (ACEFECA)

🧠 Memory Trick A-C-E-F-E-C-A = Aesthetically pleasing · Consistent · Efficient · Fluent · Economical · Controlled · Accurate
"A Cool Elite Footballer Executes Clever Actions!"
🎨 Aesthetically Pleasing

Performance is delivered with poise — skills and movements are appealing for spectators to watch.

🔁 Consistent

Performer can repeat the skill with a high success rate.

⚡ Efficient

Performer uses the best movement patterns available at the time of skill execution.

🌊 Fluent

Performer has a flow to their movement — smooth, graceful and effortless.

🎯 Accurate

Performer can execute all details and requirements of a skill correctly.

🕹️ Controlled

Performer can move and manipulate their body how they want during execution.

💡 Economical

Performer does not waste any unnecessary energy when executing a skill.

Examiners often ask you to "identify three characteristics of a skilled performance." Know all 7 indicators (ACEFECA) and be able to describe each one with a sporting example.

2. Skills Continua

Continuum A range or sliding scale between two extreme points. Each point on a continuum is slightly greater or lesser than its neighbours. You can move up or down a continuum. Skills are not easily placed in one fixed category — they are placed along a continuum.
💡 Analogy A continuum is like a dimmer light switch — not just ON or OFF, but every shade in between. A skill isn't simply "open" or "closed" — it sits somewhere along a sliding scale between those two extremes.

The Main Continua

ContinuumOne ExtremeOther ExtremeExample
Open ↔ Closed Open Skill: Performed in an unpredictable environment — the performer must constantly adapt to changing conditions. E.g. a tackle in rugby. Closed Skill: Performed in a predictable, stable environment — the technique stays the same each time. E.g. a free kick in soccer. Dribbling a basketball in a game (open) vs shooting a free throw (closed)
Gross ↔ Fine Gross Skill: Uses large muscle groups — movements are large and powerful. E.g. a shot put throw. Fine Skill: Uses small muscle groups — precise, delicate movements. E.g. snooker shot, dart throw. A GAA kick-out (gross) vs drawing a shot on goal in archery (fine)
Discrete ↔ Serial ↔ Continuous Discrete: Has a clear beginning and end. E.g. a penalty kick. Continuous: Has no clear beginning or end — repeating cycle. E.g. running, cycling. Serial skill in between: a gymnastics floor routine (series of linked discrete skills)
Self-Paced ↔ Externally Paced Self-Paced: Performer controls the timing of the skill. E.g. a golf shot. Externally Paced: The environment/opponent dictates timing. E.g. a cricket batsman reacting to a bowler. A penalty in soccer (self-paced) vs receiving a serve in tennis (externally paced)
Know all four continua with at least one sporting example for EACH extreme. A very common exam question is: "Place a named skill on a skills continuum and justify your answer."

3. Skill vs Ability

Skill "A skill is an athlete's ability to choose and perform the right techniques at the right time, successfully, regularly and with a minimum of effort." (Knapp's definition: "Skill is the learned ability to bring about predetermined results with maximum certainty, often with the minimum outlay of time or energy or both.") Skills are LEARNED through practice.
Ability The make-up of an athlete that we inherit from our parents. Abilities underpin and contribute to skills. Abilities can be essentially perceptual, essentially motor, or a combination of both. Most abilities are a combination — referred to as psychomotor abilities. Abilities are INNATE (you are born with them).
🧠 Memory Trick – The KEY Difference Skill = Schooled (you learn it through practice and training)
Ability = Already there (you're born with it — it's in your genes!)
Think: "Ability = Ancestry" (comes from your parents). "Skill = Schooled" (developed through practice).
🧬 The 10,000-Hour Rule (Gladwell) Malcolm Gladwell proposed that the top performers in any field (sport, music, business) have all completed on average 10,000 hours of deliberate practice. This highlights the importance of skill development through practice — BUT ability still matters. Studies of baseball players found elite hitters have 20/13 vision (better than normal 20/20 vision) — they can see at 20 feet what an average person needs to be at 13 feet to see. That physical ability gives a huge advantage that no amount of practice can fully replicate.
Exam question: "Distinguish between skill and ability and give one example of each." Key points: Skill is LEARNED; ability is INNATE. Abilities underpin skills.

4. Types of Skills

🧠 Memory Trick – The 3 Types P-P-C = Psychomotor (Do) · Perceptual (Feel/See) · Cognitive (Think)
"Players Perceive and Calculate!"
Psychomotor Skill (DO) A skill with a bodily movement performed voluntarily with a predetermined end result. It involves both the mind (psycho) and a physical movement (motor). Example: a goal kick in rugby.
Perceptual Skill (FEEL / SEE) A skill which involves interpreting information from the sporting environment to allow the athlete to make effective decisions during play. Example: a tennis player watching their opponent when they strike the ball in order to interpret the ball's flight, direction and spin as it approaches.
Cognitive Skill (THINK) A skill which involves problem solving during play. Having used perceptual skills, an athlete must then decide what to do next. Example: a defender deciding to force an attacker onto their weaker foot.
💡 Analogy – The Three Skills in Action Imagine a goalkeeper facing a penalty. Perceptual = reading the body language of the penalty taker to predict which way they'll shoot. Cognitive = deciding "I'll dive left." Psychomotor = actually diving and making the save. All three work together in every sporting action!

5. Skill Acquisition

Skill Acquisition The process of developing a specific sequence of body movements to overcome a motor skill problem.
Motor Skill Problem A movement that is proving to be complicated or difficult for the performer at their current level. When learning a new skill, performers' techniques will vary and so will the outcomes — because the motor programme is not yet established in their memory.
Motor Programme A stored set of movement instructions in the brain's memory that allows a skilled performer to execute a skill automatically without consciously thinking about each step. Motor programmes are developed through extensive practice and are stored in long-term memory at the autonomous stage.
💡 Analogy A motor programme is like a saved macro on a computer — the first time you do the task you do it step by step (cognitive stage), but once saved, you can run the entire sequence with one click (autonomous stage). The more you practice, the more reliably the macro runs!

6. Fitts & Posner (1967) – Stages of Skill Learning

Fitts and Posner (1967) designed a three-stage model of skill acquisition exploring the stages an athlete goes through when acquiring a new skill. With each stage, performers demonstrate different observable qualities, and different training methods, feedback and practice schedules are needed.

🧠 Memory Trick – The 3 Stages C-A-A = Cognitive → Associative → Autonomous
"Can Any Athlete become automatic?" — YES, with enough practice!
Think: Beginner → Getting Better → Elite
🧠 Stage 1 – The Cognitive Stage (BEGINNER) ▶
Cognitive Stage The mental stage of learning — occurs while the novice or beginner athlete is learning the new skill. The athlete needs to think carefully about the skill and how to execute it. They are figuring out how to move different body parts to be successful. Movements may not be smooth or coordinated, and there is little to no consistency as the skill is not yet stored in memory.
What it looks like
  • Movements look different on each attempt
  • Lots of errors and trial and error
  • Cannot explain why skills go wrong
  • Relies heavily on watching and imitating
What helps
  • Positive extrinsic feedback from coach
  • Trial and error approach
  • Self-discovery
  • Clear demonstrations
  • Simple instructions
💡 Analogy The cognitive stage is like your first driving lesson. You're thinking "mirror, signal, manoeuvre" for every tiny decision — it's exhausting and nothing feels natural yet!
🔗 Stage 2 – The Associative Stage (DEVELOPING) ▶
Associative Stage Occurs when the athlete has completed the cognitive stage and has a grasp of the fundamental movements required for the skill. The athlete begins to understand the movement and uses both intrinsic and extrinsic feedback to become more consistent. May engage in 'modelling' — observing and copying highly skilled performers.
Modelling The process by which an athlete in the associative stage observes the technique of a highly skilled performer and uses this observation to improve their own performance. E.g. a young rugby player watching video of a professional out-half to improve their kicking technique.
What it looks like
  • Beginning to show consistency
  • Can detect some own errors
  • More fluid movement starting to appear
  • Still makes mistakes under pressure
What helps
  • Both intrinsic AND extrinsic feedback
  • Self-discovery
  • Modelling (watching elite performers)
  • Video feedback
  • Technical cues from coach
💡 Analogy The associative stage is like having a few months of driving experience. You're no longer thinking about every step — but you might still stall on a hill or misjudge parking. You're improving but it's not yet automatic.
⚡ Stage 3 – The Autonomous Stage (ELITE) ▶
Autonomous Stage Athletes at this stage show high levels of consistency, fluency and accuracy — they are the elite performers. Due to many hours of practice, the athlete can perform the movements automatically with efficiency. The motor programme is stored in long-term memory, freeing up attention to focus on tactics and reading the game.
What it looks like
  • Skill executed automatically
  • Consistent, fluent, accurate
  • Can focus on tactics while performing
  • Rarely makes mistakes on skill execution
What helps
  • Intrinsic feedback (self-evaluation)
  • Negative feedback (to fix minute flaws)
  • Video analysis
  • Continued practice to STAY at this level
💡 Analogy The autonomous stage is like an experienced driver — you change gears, check mirrors and navigate complex junctions without thinking about any of it. Your brain is free to think about where you're going (tactics) not HOW to drive (skill).
⚠️ Important! Athletes in the autonomous stage must continue to practice and refine their skills — they can regress to a lower stage if they stop. Coaches provide negative feedback to identify minute flaws that elite performers need to fix.
StageLevelConsistencyFeedback NeededAutomatic?
CognitiveBeginnerVery LowPositive extrinsic from coachNo
AssociativeDevelopingGrowingBoth intrinsic + extrinsic; modelling; videoPartly
AutonomousEliteHighIntrinsic; negative feedback; video analysisYes
This is one of the most important topics in Chapter 1A. Be able to describe each stage, give examples of what the performer looks like, AND state what type of feedback/practice is most appropriate for each stage.

7. Feedback – All Types

Feedback Information an athlete receives about specific aspects of their performance. Effective feedback helps an athlete identify mistakes in their technique, which they can address to develop better movement patterns. Feedback can also highlight positive aspects to reinforce good habits and develop confidence.
🧠 Memory Trick – The Feedback Family Tree All feedback is either Intrinsic (from within) or Extrinsic (from outside).
Extrinsic splits into: KR (Knowledge of Results) or KP (Knowledge of Performance).
Any feedback can also be: Positive or Negative, AND Continuous or Terminal.
🧍 Intrinsic vs Extrinsic Feedback ▶
Intrinsic Feedback Occurs when an athlete uses their kinaesthetic awareness to evaluate their own skill execution. Athletes may use a combination of senses — vision, hearing, proprioception or touch — to 'feel' what caused a skill to be performed correctly or incorrectly. Comes from WITHIN the athlete.
Extrinsic Feedback Feedback given to an athlete from an outside source. Coaches, teachers and other athletes provide feedback following a performance or skill execution. Split into two sub-categories: Knowledge of Results (KR) and Knowledge of Performance (KP).
💡 Analogy Intrinsic feedback = tasting your own cooking and knowing it needs more salt. Extrinsic feedback = a chef (coach) telling you what it needs. Both help, but you need extrinsic more at the start (cognitive stage) and intrinsic more as you develop (autonomous stage).
📊 Knowledge of Results (KR) vs Knowledge of Performance (KP) ▶
Knowledge of Results (KR) A type of extrinsic feedback based on the outcome of the performance. Was it successful? If yes, the coach encourages the athlete to replicate the technique. If not, the coach breaks down movement patterns to identify inaccuracies. Example: "You scored!" or "You missed — let's watch why."
Knowledge of Performance (KP) A type of extrinsic feedback based on the quality of technique during skill execution — regardless of the outcome. Focuses on movement patterns. Very beneficial to those in the associative stage. Example: "Your follow-through was excellent — that's why the ball had good spin."
🧠 Memory Trick KR = Results — did it go in? Did it work? (outcome focused)
KP = Performance quality — how did the technique look? (process focused)
👍👎 Positive vs Negative Feedback ▶
Positive Feedback Generally highlights what elements of the skill execution the performer does well. Praise that helps an athlete's confidence. Usually most beneficial to athletes in the cognitive stage — building them up as beginners to encourage continued effort.
Negative Feedback Highlights mistakes by an athlete. Only beneficial if accompanied by advice on how to improve. Important for elite athletes in the autonomous stage — as it identifies minute flaws that need to be corrected at the highest level.
⚠️ Important Distinction! Negative feedback is NOT the same as being mean or discouraging — it is specific, constructive criticism about a technical error. Negative feedback without guidance on how to improve is not effective.
⏱️ Continuous vs Terminal Feedback ▶
Continuous Feedback Feedback given to an athlete while they are performing. May allow athletes to make small changes during their performance to improve. Example: a coach shouting "bend your knees more!" while an athlete is executing a squat.
Terminal Feedback Feedback given to an athlete after they perform. May provide the athlete with a different focus for training before their next performance. Example: a coach reviewing video with the athlete after the training session.
TypeSourceWhen givenBest for
IntrinsicFrom within — own body sensationsDuring performanceAssociative & Autonomous stages
ExtrinsicFrom outside — coach, peersDuring or afterCognitive stage especially
KRExtrinsic — outcome of skillAfter performanceAll stages
KPExtrinsic — technique qualityAfter performanceAssociative stage especially
PositiveEitherEitherCognitive stage especially
NegativeEitherEitherAutonomous stage especially
ContinuousCoach / own bodyDuring performanceAll stages
TerminalCoach / videoAfter performanceAll stages

8. Types of Practice

🧠 Memory Trick – 5 Types F-V-Ma-D-Me = Fixed · Variable · Massed · Distributed · Mental
"Five Very Motivated Dedicated Minds!"
📌 Fixed Practice ▶
Fixed Practice Skill repetition — the skill is practised over and over again in the same way. Best used with closed skills performed in predictable environments. Builds a strong, reliable motor programme through repetition.

Example: practising a penalty kick from the same spot, a free throw in basketball, a gymnastics routine.

🔄 Variable Practice ▶
Variable Practice Performing a skill in a variety of situations — requiring athletes to adapt their technique in response to a changing environment. Decision-making skills also improve. Best for open skills performed in unpredictable, changing environments.

Example: practising passing in different game-like scenarios, receiving crosses from different angles, shooting from different positions.

⏱️ Massed Practice ▶
Massed Practice Continued practice with no rest period. Helps an athlete produce high-quality skill execution when under physical and/or mental fatigue — replicating late-game conditions. Best for simple skills or building mental toughness.
☕ Distributed Practice ▶
Distributed Practice Athletes practise a skill and are given time to recover and reflect (alone or with a coach) on the performance before repeating. Usually involves fewer repetitions but higher quality ones. The rest intervals allow the nervous system to consolidate the movement pattern — leading to better long-term skill learning.
🧠 Mental Practice ▶
Mental Practice An athlete visualises a successful attempt of a skill in their mind — without physically performing it. Usually aimed at enhancing confidence levels and reinforcing neural pathways. Also very useful during injury recovery or as part of a pre-performance routine.
💡 Analogy Mental practice is like a flight simulator — you're not actually flying, but your brain is rehearsing every decision and movement. Research shows the neural pathways activated in mental practice are very similar to those in physical practice!

9. Methods of Practice (Whole / Part / W-P-W)

Whole Practice The skill is practised in its entirety from start to finish. The performer gets a full feel for the entire movement pattern. Best for simple, flowing skills that cannot easily be broken down. Example: catching a rugby ball from a teammate and then passing to another.
Part Practice A smaller, specific part of the skill is practised in isolation. This allows a performer to fix small inaccuracies to improve the overall execution. Best for complex skills with distinct phases. Example: practising only the follow-through on a pass.
Whole-Part-Whole Practice The skill is first practised in its entirety → then broken down into smaller parts practised in isolation → finally the parts are reassembled and the whole skill is practised again. This method maintains context (so the skill doesn't feel artificial) while allowing specific flaws to be corrected.
🧠 Memory Trick Whole = one big go at the full skill (best for simple/continuous skills)
Part = break into pieces, fix each bit (best for complex skills with distinct phases)
W-P-W = "Sandwich" — whole bread + part filling + whole bread again = best of both!
The most commonly asked method in the exam is W-P-W. Know a specific example for a complex skill: "First try the full tennis serve, then isolate the ball toss, then go back to the full serve incorporating the improved ball toss."

10. Principles of Effective Practice

When designing skill practice schedules, coaches apply the following principles to maximise learning:

🎯 Specificity

Practice should replicate the demands of the sport as closely as possible. The more specific the practice, the greater the transfer to real performance.

📈 Progressive

Practice should gradually increase in difficulty as the athlete improves — moving from simple to complex, closed to open.

🔁 Repetition

Skills must be repeated many times to build a reliable motor programme and achieve consistency.

🔁 Overload

Practice should stretch the athlete beyond their current comfort zone to drive improvement — but not so much that it causes injury or demotivation.

💬 Feedback

Accurate, timely feedback is essential to correct errors and reinforce good technique during skill learning.

😊 Motivation

Athletes must be motivated to engage with practice. Varied, enjoyable sessions maintain motivation and effort.

Conditioned Games Games with modified rules that focus on specific tactics or skills in a game context. Modified rules force players to emphasise certain skills. Coaches may add or change rules throughout. Example: a soccer game where players can only take two touches (forces off-the-ball movement and quick passing).
⚠️ Common Exam Trap! Do NOT confuse Conditioned Games with Conditioning Games!
Conditioned Games = modified rules to focus on specific SKILLS/TACTICS.
Conditioning Games = modified rules to increase physical FITNESS demands. E.g. increasing pitch size in a rugby game.

11. Skill Tests

Ipsative Test The performer designs a test which they will repeat under similar conditions at a later date and compare both scores. The test should replicate the demands of the sport. It compares the athlete to their own previous performance — measuring personal improvement. Example: a goal kicker takes 10 kicks from different locations and records their score, then repeats later to compare.
Skill Sheet The performer identifies the key elements that lead to a successful skill execution. They record themselves performing the skill and then assess which elements were present for each attempt. Example: identifying four key elements of successful passing technique and recording five passes off each hand, then ticking which elements were present for each pass.
Comparing to a Skilled Performer The performer records themselves performing the skill. Using a skill analysis app, they compare themselves to a skilled/elite performer. Both videos should be from the same angle for accuracy. Example: a golfer recording their drive and comparing their takeaway, transition, downswing and impact to Tiger Woods.
🧠 Memory Trick – 3 Skill Tests I-S-C = Ipsative · Skill Sheet · Comparing to expert
"I Score by Comparing!" — each test gives you information about YOUR performance.

🧠 Chapter 1A Quick Quiz

🔬 Chapter 1B: Analysing Skill & Technique

Biomechanics, planes, axes, levers, vectors, Newton's Laws, and economy of movement

1. What is Biomechanics?

Biomechanics The science of body movement. Sports biomechanics analyses the interaction between muscles, bones, ligaments and tendons and how they relate to sporting movement. Also examines forces that the body creates and forces acting on the body. The goal is to understand HOW the body moves so performance can be optimised and injury risk minimised.
💡 Analogy Biomechanics is to sport what engineering is to building a bridge. Just as engineers study the forces acting on a bridge to make it stronger and more efficient, biomechanists study the forces acting on an athlete's body to make them faster, more powerful and less injury-prone.
Anatomical Position The standard starting point (reference position) from which the anatomy of the moving body can be described. The body stands upright, facing forward, with arms at the sides and palms facing forward. ALL movements and planes are described relative to this position.

2. Planes of Movement

Plane of Movement An imaginary flat surface running through the body that divides it into two sections. The human body moves within three dimensions, and many sporting actions rely on a mixture of movements in different planes.
🧠 Memory Trick – 3 Planes F-T-S = Frontal · Transverse · Sagittal
"Fit Tennis Stars!" — and remember: each plane DIVIDES the body into TWO halves.
🔵 Frontal Plane (Coronal Plane) ▶
Frontal Plane Passes through the side of the body and divides it into front (anterior) and back (posterior) halves. Abduction (moving away from the body's midline) and adduction (moving towards the midline) and lateral (side-to-side) movements occur in this plane.
🏃 Examples Jumping jacks, raising and lowering arms sideways, cartwheel, sidestepping, lateral lunges.
📹 Video Analysis Tip Stand in FRONT of the athlete to capture frontal plane movements.
💡 Analogy Imagine a pane of glass cutting you in half from ear to ear — front half and back half. Any movement that stays in that side-to-side plane is a frontal plane movement.
🟢 Transverse Plane (Horizontal Plane) ▶
Transverse Plane A horizontal plane through the middle of the body that divides it into upper and lower halves. Rotational movements occur in this plane.
🏃 Examples Hip rotation in a golf swing, twisting in a discus throw, pivoting in netball, spinning in skating, trunk rotation in a tennis serve.
📹 Video Analysis Tip Stand in FRONT of or to the SIDE of the athlete to capture transverse plane movements.
🔴 Sagittal Plane (Median Plane) ▶
Sagittal Plane A vertical plane that passes through the midline of the body dividing it into left and right sides. Flexion, extension, plantarflexion and dorsiflexion movements occur in this plane.
🏃 Examples Kicking a football, chest pass in netball, walking, jumping, squatting, bicep curl.
📹 Video Analysis Tip Stand to the SIDE of the athlete to capture sagittal plane movements.
💡 Analogy Sagittal = like a book spine down the middle of your body, splitting left from right. A forward kick swings through this plane.
PlaneDivides Body IntoMovement TypeSport ExampleCamera Position
FrontalFront & BackAbduction, adduction, lateralStar jump, cartwheel, sidesteppingIn front
TransverseTop & BottomRotationGolf swing, discus throw, pivot in netballFront or side
SagittalLeft & RightFlexion, extensionKick, squat, walking, bicep curlSide
Exam question: "Name the plane of movement in which a soccer kick primarily occurs and justify your answer." Answer: Sagittal plane — the kicking leg swings forward (flexion/extension), which divides left from right.

3. Axes of Movement

Axis of Movement A straight line through the body around which the body (or body part) rotates. There are three axes of movement, each running perpendicular (at 90°) to its corresponding plane.
🧠 Memory Trick – Planes & Axes are Perpendicular Pairs Frontal Plane ↔ Sagittal Axis (front-to-back rod): Cartwheel
Sagittal Plane ↔ Frontal Axis (left-to-right rod): Somersault / Front flip
Transverse Plane ↔ Vertical Axis (top-to-bottom rod): Spin / Twirl
Think: each plane ROTATES AROUND its matching perpendicular axis!
Sagittal Axis (Anteroposterior)

Runs front to back through the centre of the body. Think of a rod through the belly button. Paired with the Frontal Plane.

Example: Cartwheel — the body rotates sideways around this axis.

Vertical Axis

Runs top to bottom through the centre of the body. Think of a spinning top. Paired with the Transverse Plane.

Example: Ice skater performing a spin — rotating around this axis.

Frontal Axis (Mediolateral)

Runs left to right through the centre of the body (through the hips). Think of players on a foosball table. Paired with the Sagittal Plane.

Example: Somersault or front flip — the body rotates forward around this axis.

AxisDirectionThink of...Paired PlaneSport Example
Sagittal AxisFront to backRod through belly buttonFrontal PlaneCartwheel
Frontal AxisLeft to rightFoosball table rodSagittal PlaneSomersault / front flip
Vertical AxisTop to bottomSpinning topTransverse PlaneIce skater spin

4. Levers in the Human Body

Lever A solid structure that rotates about a pivot point (fulcrum). An effort applied to the lever moves a load. In the human body, levers are formed from bones (rigid structure), muscles (effort/force), and joints (fulcrum/pivot point). The load is the weight of the body part being moved (and anything it is carrying).
Fulcrum The fixed pivot point around which a lever rotates. In the human body, the fulcrum is always a joint.
🧠 Memory Trick – The KEY to Levers is knowing the ORDER of F, E and L 1st Class: F in the middle → E–F–L (like a seesaw: fulcrum in the middle)
2nd Class: L in the middle → F–L–E (like a wheelbarrow: load in the middle)
3rd Class: E in the middle → F–E–L (most common in the body: effort in the middle)
Memory cheat: FLE = 123: "Fulcrum first (1st), Load second (2nd), Effort third (3rd)" — tells you what's in the MIDDLE!
⚖️ 1st Class Lever – Fulcrum in the MIDDLE ▶
1st Class Lever The fulcrum (joint) is positioned in the middle between the effort (muscle) and the load (resistance). Like a seesaw — the pivot is in the middle.
EFFORT
──
FULCRUM
──
LOAD
🏃 Body Example Neck: Neck muscles (E) → neck joint (F) → weight of head (L). Used when nodding your head or heading a football.
🎯 Sport Example Throwing a dart: Effort = tricep, Fulcrum = elbow joint, Load = hand and dart.
🏋️ 2nd Class Lever – Load in the MIDDLE ▶
2nd Class Lever The load (resistance) is positioned in the middle between the fulcrum and the effort. Like a wheelbarrow — you lift the handles (effort), the wheel is the fulcrum, and the load is in the middle of the barrow.
FULCRUM
──
LOAD
──
EFFORT
🏃 Body Example Ankle (plantarflexion): Ball of foot (F) → body weight through heels (L) → gastrocnemius muscle contraction (E). Used when rising on tiptoe, taking off for a jump, or pushing from starting blocks.
🎯 Sport Example Jump take-off: Effort = calf muscles, Load = body mass through heels, Fulcrum = ball of foot.
⭐ Key Fact 2nd class levers ALWAYS have a Mechanical Advantage — they can move large loads with relatively small effort. This is why jumping feels less exhausting than it looks!
💪 3rd Class Lever – Effort in the MIDDLE ▶
3rd Class Lever The effort (muscle) is positioned in the middle between the fulcrum and the load. This is the most common lever in the human body. Although it requires more effort, it allows the load to move further and faster — generating speed.
FULCRUM
──
EFFORT
──
LOAD
🏃 Body Example Bicep curl: Elbow joint (F) → bicep muscle attachment (E) → weight of forearm and anything held (L).
🎯 Sport Examples Kicking a soccer ball: Fulcrum = knee joint, Effort = quadricep attachment, Load = foot (and ball).
Tennis forehand: The long load arm (racket) generates high racket head speed.
LeverOrder (middle item = key)Body ExampleSport Example
1st ClassE – F – L (Fulcrum middle)Neck — heading a footballThrowing a dart (E=tricep, F=elbow, L=hand+dart)
2nd ClassF – L – E (Load middle)Ankle — calf raise / jump take-offSprint start (E=calf, L=body mass, F=ball of foot)
3rd ClassF – E – L (Effort middle)Forearm — bicep curlKicking (F=knee, E=quad, L=foot)

5. Mechanical Advantage & Disadvantage

Mechanical Advantage When a lever's effort arm (distance from Effort to Fulcrum) is longer than its load arm (distance from Load to Fulcrum), the lever has a Mechanical Advantage. This means it can move large loads with a relatively small amount of effort. Second class levers ALWAYS have Mechanical Advantage. First class levers can have Mechanical Advantage if the fulcrum is close to the load.
Mechanical Disadvantage When the load arm is longer than the effort arm, the lever has a Mechanical Disadvantage — more effort is required to move the load. Although more effort is required, the benefit is that the load moves further and faster. Most commonly found in third class levers. Example: in a tennis forehand, the long load arm allows for greater generation of speed in the racket face, enabling the player to hit the ball harder.
💡 Analogy Mechanical Advantage = a long crowbar to open a can — the long lever arm means you barely need to push to pop the lid. Mechanical Disadvantage = chopsticks — it takes MORE effort (your fingers) to move them, but your hand can move food much further and faster than a short lever could.
🧠 Memory Trick Advantage = Less effort to move big loads (long effort arm)
Disadvantage = More effort BUT more speed/range (long load arm)
In sport, Disadvantage is actually USEFUL — it lets limbs move fast over large ranges (kicks, throws, tennis strokes)!

6. Vectors & Scalars

Magnitude The size of something — "how much" there is of it. Both scalars and vectors have magnitude, but only vectors also have direction.
Scalar Quantity A quantity that has magnitude only — direction is not important. Scalar quantities are one-dimensional. Examples: distance, speed, mass, power, length, temperature, time.
Vector Quantity A quantity that has both magnitude AND direction. The direction is essential to fully describe the quantity. Examples: displacement, velocity, force, weight, acceleration.
🧠 Memory Trick Scalar = Size only (like your weight on a scales — just a number, no direction)
Vector = Velocity-type (a direction is always included — where are you going?)
VECTOR = "VECtor has a diRECTION" — VEC-RECTION hidden inside the word!
ScalarIts Vector PartnerKey Difference
Distance — how far an object travels (direction irrelevant). E.g. shot putt travels 18m.Displacement — how far an object travels in a given direction (shortest path between 2 points).Distance = total path. Displacement = straight-line distance with direction.
Speed — distance travelled in a specific amount of time. E.g. Usain Bolt: 100m ÷ 9.58s = 10.44 ms⁻¹Velocity — the speed of something in a given direction. If direction changes, velocity changes even if speed stays the same.Speed = no direction. Velocity = speed WITH direction.
Mass — how much matter an object contains (kg). Constant — never changes.Weight — the force exerted on mass by gravity (Newtons). NOT constant — can change depending on location (e.g. different gravity on the moon).Mass = matter (constant). Weight = gravitational force (variable).
Acceleration The rate of change of velocity over time. A vector quantity — it has both magnitude and direction. Formula: Acceleration = Change in Velocity ÷ Time (m/s²).
Exam question: "Distinguish between speed and velocity using a sporting example." Speed = distance/time (no direction). Velocity = speed in a specific direction. E.g. Usain Bolt's speed = 10.44 ms⁻¹. His velocity = 10.44 ms⁻¹ in a northward direction down the 100m track.

7. Newton's Three Laws of Motion

🧠 Memory Trick – The 3 Laws 1st = Inertia (things keep doing what they're doing until something stops them)
2nd = Acceleration (F = MA — more force = more acceleration)
3rd = Reaction (every action has an equal and opposite reaction)
"I Am Rocket-powered!" = Inertia, Acceleration, Reaction
⚽ Newton's 1st Law – Law of Inertia ▶
Newton's 1st Law – Law of Inertia "A body at rest will remain at rest, and a body in motion will remain in motion with a constant speed and direction, unless acted on by an external force." A body resists changes to its state of motion — this resistance is called inertia.
Inertia The resistance of a body to a change in its state of motion. A heavier object has more inertia (harder to start or stop moving).
⚽ Sport Examples Soccer penalty: The ball placed on the spot remains still (at rest) until the player kicks it (external force). Once kicked, the ball continues moving until acted on by gravity, the net, the goalkeeper, etc.
GAA goal kick: Ball stays on the tee until kicked. Once in the air, gravity, wind and the post can affect it.
🚀 Newton's 2nd Law – Law of Acceleration ▶
Newton's 2nd Law – Law of Acceleration "A body in motion will only change velocity when acted upon by an external force. The resultant change in velocity is proportional to the force applied and acts in the same direction as the applied force."
Formula: F = M × A (Force = Mass × Acceleration)
🏑 Sport Examples Hurling: If a hurler strikes the ball with double the force, the ball accelerates at double the rate in the same direction.
Medicine ball throw: More force applied = ball travels higher/further. If the ball is heavier (more mass), the same force produces less acceleration.
💡 Analogy F=MA is like a shopping trolley. A heavy trolley (large M) needs much more force (F) to accelerate (A) at the same rate as an empty trolley. Or: the same force applied to a lighter trolley creates much greater acceleration. This is exactly why a lighter football travels further than a heavy shot putt when struck with the same force!
🏊 Newton's 3rd Law – Law of Reaction ▶
Newton's 3rd Law – Law of Reaction "For every action or force, there is an equal and opposite reaction or counterforce." Every time one object exerts a force on another, the second object exerts an equal force back in the opposite direction.
🏉 Sport Examples Rugby jump: A player jumping to catch a high ball generates force into the ground. The ground produces an equal and opposite counterforce, sending the player upward.
Swimming front crawl: The swimmer's hand pulls the water backward (action force). The water pushes the swimmer's hand forward and the swimmer moves forward (reaction force).
Sprint start: The sprinter pushes backward into the starting blocks (action). The blocks push back with equal force, propelling the sprinter forward (reaction).
💡 Analogy Newton's 3rd Law is like standing on a skateboard and throwing a heavy ball forward — the moment you release it, you roll backward! The action (throwing forward) creates an equal reaction (you move backward).
LawNameSummarySport Example
1stLaw of InertiaObjects keep doing what they're doing unless a force acts on themSoccer ball stays on the spot until kicked
2ndLaw of Acceleration (F=MA)More force → more acceleration; heavier object → less acceleration for same forceStriking a hurling ball harder makes it go faster
3rdLaw of ReactionEvery action has an equal and opposite reactionSprinter pushing back on blocks → blocks push sprinter forward
Newton's Laws are very commonly examined. You must be able to NAME the law, EXPLAIN it in your own words, and give a SPECIFIC sporting example. Always state which law you are using clearly.

8. Sources of Resistance to Sports Motion

As athletes execute their sport's required movements, external forces act upon them. Understanding these forces is key to optimising performance.

SourceExplanationSport Example
InertiaThe resistance of a body to a change in motion. A heavier body has more inertia and is harder to start or stop.A scrum in rugby — overcoming the inertia of the opposition pack to drive them backward.
GravityA constant downward vertical force acting on the athlete's body at all times.A javelin thrower — the ball of the javelin follows a parabolic arc as gravity acts on it from the moment it leaves the hand.
FrictionA gripping force between surfaces. Can be beneficial (providing grip) or a source of resistance. Depends on the surface and material.Running spikes on a track provide friction (grip). Ice skating on smooth ice minimises friction (allowing gliding).
Fluid Forces (Drag)Resistance of movement through a fluid. Hydrodynamic drag = resistance through water. Aerodynamic drag = resistance through air. Both can slow the athlete down.A swimmer in streamlined position reduces hydrodynamic drag. A cyclist in a low tuck position reduces aerodynamic drag.
💡 Analogy Sources of resistance in sport are like the invisible opponents you face even when no one is marking you! Gravity, air resistance, friction and inertia are always there, either helping (friction gripping the track) or hindering (drag slowing the swimmer). Elite athletes train to minimise the hindrances and maximise the benefits.

9. Economy of Movement

Economy of Movement Can be examined from two perspectives: (1) Energy Expenditure/Cost — the less energy an athlete uses when executing a skill, the more economical or efficient their movement. (2) Execution of Technique — good technical execution means the athlete uses less energy, resulting in higher economy of movement.
⚡ Energy Expenditure Perspective ▶

The less energy an athlete/player uses when executing a skill, the more economical or efficient their movement. Technique, coordination, mobility and stability all impact a performer's energy expenditure.

Elite athletes such as middle and long-distance runners, cyclists and triathletes have highly developed aerobic and anaerobic energy systems enabling them to sustain a fast pace for a prolonged period with minimal energy cost.

💡 Analogy An economical runner is like a fuel-efficient car. They go just as fast as less efficient runners but burn far less "fuel" (energy) to do so — which means they have more left in the tank for the finish line!
🎯 Execution of Technique Perspective ▶

Good execution or performance of technique means the player/athlete uses less energy — resulting in higher economy of movement. They can perform the technique using the minimum amount of energy to achieve the best result.

Example: a javelin thrower with good technique uses optimal body position, approach speed and release angle to throw to their full potential with minimum energy expenditure — compared to a poor technician who wastes energy fighting their own body mechanics.

10. Creative Application of Skill

Creative Application of Skill Creativity is the ability of a performer to be unusual, innovative and unique. When facing a problem, a creative performer can come up with an unexpected answer. Creativity can be shown through a skill, a movement or a tactic. Examples: no-look pass in rugby, flop shot in golf, Panenka chip penalty in soccer.
Positive ImpactNegative Impact
Creativity can help a team unlock a stubborn defence when space is limited — an unexpected action creates opportunities that predictable play would not. Example: Brian O'Driscoll's creative offloads in tight spaces. "Creative players" can be seen as a luxury by some coaches who feel they can be wasteful in possession — taking risks when safer options are available. Creativity that doesn't come off can concede possession or scores.
💡 Analogy Creative application of skill is like a jazz musician improvising within a structured piece. The basic skills (notes, scales) are mastered — but the creative player uses them in unexpected ways that surprise the audience (or opponent) and produce something extraordinary that pre-planned patterns never could!
Exam question: "Explain what is meant by creative application of skill and give two sporting examples." Know both positive AND negative impacts — the examiner may ask for both sides.

🧠 Chapter 1B Quick Quiz

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