📚 Pre-U CAIE Physical Education: Vocabulary and Terminology Quick Memorisation Guide | Pre-U CAIE 体育：词汇术语速记指南
Pre-U CAIE Physical Education demands precise and confident use of subject-specific terminology across anatomy, physiology, biomechanics, psychology and contemporary sporting issues. This quick memorisation guide breaks down essential vocabulary into manageable clusters, pairing each term with a crystal-clear explanation and a memory hook that works. Whether you are tackling a data-response question or an extended essay, these terms will help you write with academic authority.
Pre-U CAIE 体育课程要求学生在解剖学、生理学、生物力学、心理学和当代体育议题中精准、自如地使用学科术语。这份速记指南将核心词汇分成易于掌握的模块，每个术语都配有清晰的解释和有效的记忆钩子。不论你面对的是数据分析题还是长篇论文，这些术语都能让你写出具有学术说服力的答案。
1. Anatomical Position, Planes and Axes | 解剖学姿势、平面与轴
Anatomical Position: The standard frame of reference: body upright, facing forward, feet parallel, arms at the sides with palms facing anteriorly. Every directional term assumes this stance. Tip: Imagine a proud statue; palms forward like holding a bowl.
解剖学姿势：标准的参考框架：身体直立、面向前、双脚平行、手臂垂于体侧且掌心朝前。一切方位术语都以此为基础。记忆技巧：想象一尊骄傲的雕像，掌心向前仿佛托着一只碗。
Sagittal Plane: A vertical plane dividing the body into left and right portions. Flexion and extension happen here. Tip: ‘Sagittal’ sounds like ‘sag’, which you see from the side – the plane itself slices sideways but produces left-right halves; picture an archer’s arrow shooting straight forward along the sagittal plane.
矢状面：将身体分为左右两部分的垂直平面。屈、伸动作发生在此平面上。记忆技巧：’Sagittal’ 音近 ‘sag’（下垂），矢状缝把颅骨分成左右，想象一支箭从前向后直射，代表矢状面的走向。
Frontal (Coronal) Plane: Divides the body into anterior and posterior sections. Abduction and adduction occur here. Tip: A crown (corona) sits on the forehead; the frontal plane passes through the crown, splitting front from back.
额状面（冠状面）：将身体分为前后两部分的垂直平面。外展和内收动作在此平面进行。记忆技巧：’Coronal’ 音近 ‘crown’（皇冠），皇冠戴在额部前方，额状面沿冠切面切开，分出前与后。
Transverse (Horizontal) Plane: Splits the body into superior and inferior segments. Rotation movements like a golf swing happen transversely. Tip: ‘Transverse’ shares the root with ‘transatlantic’ – crossing the body horizontally.
水平面（横切面）：将身体分为上下两部分的水平平面。旋转类动作如高尔夫挥杆在水平面上发生。记忆技巧：’Transverse’ 词根意为’横跨’，像横渡大西洋一样横穿身体。
2. Joint Actions and Movement Terminology | 关节动作与运动术语
Flexion: Decreasing the angle at a joint, e.g. bending the elbow. Tip: Think of ‘flexing’ a muscle and making the angle smaller – a flexed bicep closes the elbow joint.
屈：减小关节角度，例如弯肘。记忆技巧：’Flex’ 让你想到弯起手臂秀肌肉，肘关节角度随之变小。
Extension: Increasing the angle, returning to anatomical position or beyond. Tip: ‘Ex-tension’ means expanding the angle; a dancer extending a leg opens the hip joint.
伸：增大关节角度，回到解剖学姿势甚至超过。记忆技巧：’Ex-tension’ 中的 ‘ex’ 指向外伸展，舞者后伸腿时髋角增大。
Abduction: Moving a limb away from the midline. Tip: ‘Ab-duction’ – to abduct is to take away, just like the alien abduction takes you away from home; the limb is taken away from the body’s midline.
外展：肢体远离身体中线的动作。记忆技巧：’Ab-duction’ 中的 ‘ab’ 表示远离，如同外星人将你绑架(abduct)带走，肢体也被带离中线。
Adduction: Bringing the limb back towards the midline. Tip: ‘Ad-duction’ – to add back to the body; hug yourself to adduct the arms.
内收：肢体回归中线的动作。记忆技巧：’Ad-duction’ 中的 ‘ad’ 表示添加、朝向，给自己一个拥抱就是手臂内收。
Circumduction: A conical movement combining flexion, extension, abduction and adduction, e.g. drawing a circle with the arm. Tip: ‘Circum-‘ like circumference; the limb traces a circle.
环转：融合屈、伸、外展、内收的圆锥形动作，例如手臂画圆。记忆技巧：’Circum-‘ 意为圆周，肢体末端画出一个圆周轨迹。
3. Muscular System Essentials | 肌肉系统要点
Agonist (Prime Mover): The muscle directly responsible for producing a movement. For elbow flexion, the biceps brachii is the agonist. Tip: ‘Agonist’ sounds like ‘agony aunt’ – the one that does the work and bears the tension.
主动肌（原动肌）：直接负责产生某一动作的肌肉。例如肘屈时，肱二头肌是主动肌。记忆技巧：’Agonist’ 音似 ‘agony’（痛苦），它承担主要收缩工作，承受张力。
Antagonist: The muscle that opposes the agonist, relaxing and lengthening to permit movement. During elbow flexion, the triceps brachii acts as the antagonist. Tip: ‘Antagonist’ = anti-agonist; it opposes the action.
拮抗肌：与主动肌作用相反的肌肉，通过放松和拉长来允许动作发生。肘屈时，肱三头肌即为拮抗肌。记忆技巧：’Antagonist’ = 反主动肌，对抗作用。
Isotonic Contraction (Concentric): Muscle shortens under tension, e.g. upward phase of a bicep curl. Tip: ‘Concentric’ – central area gets closer, muscle bellies come together.
等张收缩（向心收缩）：肌肉在张力下缩短，例如肱二头弯举上举阶段。记忆技巧：’Concentric’ 联想到中心靠拢，肌腹相互靠近。
Eccentric Contraction: Muscle lengthens while under tension, controlling the downward phase. Tip: ‘Eccentric’ = extended length; the muscle gets longer despite tension, like letting down a heavy book slowly.
离心收缩：肌肉在张力下被拉长，控制动作的放下阶段。记忆技巧：’Eccentric’ 里藏着 ‘extend’，肌肉虽用力却在拉长，如同缓慢放下重物。
Isometric Contraction: Muscle tension develops but length remains unchanged, e.g. holding a plank. Tip: ‘Iso-‘ = equal, ‘metric’ = length; equal length throughout.
等长收缩：肌肉产生张力但长度恒定，如平板支撑。记忆技巧：’Iso-‘ 意为相同，’metric’ 指长度，全程长度相等。
4. Cardiovascular and Respiratory Vocabulary | 心血管与呼吸术语
Heart Rate (HR): Number of cardiac cycles per minute (bpm). Resting HR for a trained athlete may drop below 50 bpm. Tip: HR is the beat clock; lower resting HR often indicates greater cardiac efficiency.
心率 (HR):每分钟心脏搏动的次数(bpm)。训练有素的运动员静息心率可低至50 bpm以下。记忆技巧：心率就像心脏的节拍器；静息心率越低，往往代表心脏效率越高。
Stroke Volume (SV): Volume of blood ejected by the left ventricle per beat. Increases during exercise due to greater venous return and myocardial contractility. Tip: ‘Stroke’ means one pump; bigger stroke volume means more blood moved per heartbeat.
每搏输出量 (SV):左心室每次搏动泵出的血量。运动时因静脉回流量和心肌收缩力增强而增大。记忆技巧：’Stroke’ 是一泵，每搏输出量越大，每次心跳输出的血液越多。
Cardiac Output (Q): The product of HR × SV, representing blood volume pumped per minute (L·min⁻¹). During intense exercise, Q can rise from 5 to over 20 L·min⁻¹. Tip: Remember Q = heart rate × stroke volume; ‘Q’ for quantity pumped.
心输出量 (Q):心率×每搏输出量，代表每分钟泵出的血量(升/分钟)。剧烈运动时，Q可从5升至20升/分钟以上。公式记忆：Q = HR × SV，Q就是泵出的总量。
VO₂ Max: Maximal oxygen uptake; the gold standard aerobic endurance indicator, expressed in ml·kg⁻¹·min⁻¹. A high VO₂ max reflects integrated capacity of lungs, heart and muscles to utilise oxygen. Tip: Think of VO₂ max as the body’s engine size – larger max = greater endurance potential.
最大摄氧量 (VO₂ Max):最大氧摄取量，有氧耐力的金标准指标，以 ml·kg⁻¹·min⁻¹ 表示。高 VO₂ max 反映肺、心脏和肌肉利用氧气的综合能力。记忆技巧：把 VO₂ max 看作身体的发动机排量，排量越大，耐力潜力越高。
5. Biomechanics: Linear Motion, Force and Levers | 生物力学：线性运动、力与杠杆
Velocity: Rate of change of displacement (m·s⁻¹), a vector quantity including direction. Tip: Velocity = speed with a declared direction; think ‘v for vector’.
速度：位移的变化率(米/秒)，包含方向的矢量。记忆技巧：速度=速率+方向，’v’ 开头的 vector，强调方向。
Acceleration: Rate of change of velocity (m·s⁻²). Positive when speeding up, negative (deceleration) when slowing. Tip: A = change in v/ time; stepping on the gas pedal increases acceleration.
加速度：速度的变化率(米/秒²)。加速时为正值，减速时为负值。记忆技巧：加速度 = 速度差/时间，踩油门带来加速度。
Force Summation: The coordinated sequential recruitment of body segments to maximise force generation, e.g. a javelin throw. Tip: Sum of small forces timed perfectly yields an explosive resultant force; imagine whipping a towel.
合力叠加：协调有序地动员身体环节以最大化产生力量，如标枪投掷。记忆技巧：依次叠加的小力量精准叠加，产生爆发性合力；想象甩毛巾的动作链条。
Lever Systems: A rigid bar (bone) pivoting about a fulcrum (joint). First-class (FAR): neck extension; second-class (ARF): calf raise; third-class (AFR): elbow flexion. Tip: Remember ‘FAR, ARF, AFR’ – 1-2-3, middle letter is always the fulcrum (A = axis).
杠杆系统：刚体(骨)绕支点(关节)转动。第一类杠杆(FAR)：头颈伸；第二类(ARF)：提踵；第三类(AFR)：肘屈。记忆技巧：记 ‘FAR, ARF, AFR’ 顺序1-2-3，中间字母永远是支点(A=axis)。
6. Angular Motion and Fluid Mechanics | 角运动与流体力学
Angular Velocity: The rate of spin around an axis (rad·s⁻¹). Increased angular velocity contributes to a faster golf club head. Tip: ‘Angular velocity’ is how fast something spins – a skater pulling arms in increases it.
角速度：绕轴旋转的速率(弧度/秒)。提高角速度能让高尔夫杆头更快。记忆技巧：角速度即旋转快慢，花滑选手收臂可增加角速度。
Moment of Inertia: Resistance of a body to change its rotational motion, depending on mass distribution about the axis. Tucked diving position reduces moment of inertia, allowing faster somersaults. Tip: Inertia resists change; mass far from axis gives high resistance; bring mass close to axis to spin faster.
转动惯量：物体抵抗旋转状态变化的性质，取决于质量对轴的分布。抱膝姿势降低转动惯量，使翻腾更快。记忆技巧：转动惯量抗拒改变，质量离轴越远阻力越大；靠近轴心就转得更快。
Bernoulli’s Principle: Faster fluid flow creates lower pressure. Applied to lift in discus and spin on footballs. Tip: ‘Bernoulli = blow faster, pressure drops’ – think of an aeroplane wing.
伯努利原理：流体流速越快，压强越低。应用于铁饼的升力和足球的旋转弧线。记忆技巧：伯努利原理=气流越快压强越低，想象飞机机翼。
The Magnus Effect: A spinning object deflects its surrounding air, creating a pressure difference and a curved flight path. Topspin produces a dip; backspin produces lift. Tip: ‘Magnus makes it curve’ – the spin direction dictates the curve.
马格努斯效应：旋转的物体带动周围空气偏折，产生压差和弯曲飞行轨迹。上旋下坠，下旋上飘。记忆技巧：马格努斯效应让球拐弯，旋转方向决定弧线形状。
7. Energy Systems and Recovery | 能量系统与恢复
ATP (Adenosine Triphosphate): The immediate energy currency of cells. Stored in small amounts, it is resynthesised by three energy systems. Tip: ATP = instant payment; only small change available, so constant resynthesis is needed.
ATP（三磷酸腺苷）：细胞的即时能量货币。储存量很小，需由三个能量系统不断再合成。记忆技巧：ATP等同现金零钱，随时备付但存量极少，必须不断补充。
ATP-PC (Phosphocreatine) System: Anaerobic, provides energy for high-intensity bursts up to 10 seconds, e.g. 100 m sprint. Tip: ‘PC = power card’ – instant credit for a very short burst.
ATP-CP（磷酸肌酸）系统：无氧，提供约10秒内的高强度爆发能量，如100米冲刺。记忆技巧：’PC’ 像强力信用卡，只能支持极短时间的能量借贷。
Lactic Acid (Glycolytic) System: Anaerobic glycolysis supplying energy for high-intensity activity lasting around 60-90 seconds. Produces lactate and hydrogen ions, associated with heavy burning sensation. Tip: ‘Lactic = last a little longer but makes you burn and ache.’
乳酸（糖酵解）系统：无氧糖酵解提供能量，持续约60-90秒的高强度运动。产生乳酸和氢离子，与肌肉灼烧感相关。记忆技巧：乳酸系统让你多坚持一会儿，但会带来灼痛。
Aerobic System: Utilises oxygen to fully break down carbohydrates and fats, yielding large amounts of ATP for prolonged activity. Tip: ‘Aerobic = air-obic’; needs oxygen, slow but enduring.
有氧系统：利用氧气完全分解碳水化合物和脂肪，产生大量ATP，支持长时间运动。记忆技巧：有氧即需氧，缓慢但持久，像长明灯。
EPOC (Excess Post-exercise Oxygen Consumption): Elevated oxygen intake after strenuous exercise to restore homeostasis, clear lactate and replenish phosphocreatine stores. Tip: ‘EPOC = extra payment of oxygen after credit.’
运动后过量氧耗 (EPOC):剧烈运动后额外摄取的氧气，用以恢复稳态、清除乳酸和补充磷酸肌酸。记忆技巧：EPOC像还氧债，运动越激烈欠债越多。
8. Components of Fitness and Testing | 体能组成与测试
Cardiovascular Endurance: The ability of the heart and lungs to supply oxygen to working muscles over sustained periods. Tested via multi-stage fitness test or Cooper 12-minute run. Tip: ‘Cardio’ means heart; endurance is how long the heart can keep the engine running.
心血管耐力：心脏和肺向工作肌肉持续供氧的能力。测试：多阶段体能测试或Cooper 12分钟跑。记忆技巧：’Cardio’ 即心脏，耐力就是心脏维持引擎运转的时长。
Muscular Endurance: Capacity of a muscle group to exert repeated contractions against a resistance. Assessed with push-up or sit-up tests. Tip: Muscular endurance = not how strong once, but how many times.
肌耐力：肌群反复对抗阻力收缩的能力。可用俯卧撑或仰卧起坐测量。记忆技巧：肌耐力不是看一次多有力，而是能重复多少次。
Power: The product of strength and speed (force × velocity). Critical for explosive actions like high jump take-off. Wingate test measures anaerobic power. Tip: Power = fast strength; ‘P = F × v’.
爆发力：力量与速度的乘积(力 × 速度)。对纵跳起跳等爆发性动作至关重要。温盖特测试测定无氧功率。记忆技巧：爆发力就是快速力量，P = F × v。
Agility: The ability to rapidly change body direction or position with control. Illinois agility run is a common test. Tip: Agility = quick and nimble direction changes; think of a fox.
敏捷性：快速而有控制地改变身体方向或位置的能力。伊利诺伊敏捷跑是常用测试。记忆技巧：敏捷=快速灵巧地变向，像狐狸一样。
9. Skill Acquisition and Information Processing | 技能获得与信息加工
Open Skill: Performed in an unpredictable, changing environment where the performer must constantly adapt, e.g. surfing. Tip: Open skills are open to external influence; you must read the situation.
开放性技能：在不可预测、多变的环境中执行，需持续适应，如冲浪。记忆技巧：开放技能对环境开放，必须临场应变。
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