📚 A-Level Cambridge Physical Education: Key Vocabulary & Terms Quick-Memorisation Guide | A-Level Cambridge 体育：词汇术语速记指南
Mastering key terminology is essential for success in A-Level Cambridge Physical Education. This guide breaks down high-frequency terms across anatomy, physiology, biomechanics, psychology and more, providing bite-sized explanations and fast recall strategies tailored to the Cambridge syllabus.
掌握核心术语是 A-Level Cambridge 体育课程取得高分的基础。本指南将解剖学、生理学、生物力学、心理学等模块的高频词汇逐一拆解，配以简洁解释和快速记忆技巧，紧扣剑桥大纲要求。
1. Skeletal System Vocabulary | 骨骼系统词汇
A strong grasp of skeletal terminology lets you analyse movement, joint function and bone adaptation confidently. Memorise these terms to answer joint-action and injury-prevention questions.
扎实的骨骼术语功底能让你自信地分析动作、关节功能和骨适应。熟记这些词汇，从容应对关节运动和损伤防护类题目。
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Ossification: The lifelong process of bone formation, growth and repair in which cartilage is gradually replaced by bone.
骨化：骨骼形成、生长与修复的终生过程，软骨逐渐被骨组织取代。
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Periosteum: A tough, fibrous membrane covering the bone’s surface; it provides attachment for tendons and is vital for bone nutrition and repair.
骨膜：覆盖骨骼表面的坚韧纤维膜，为肌腱提供附着点，对骨的营养和修复至关重要。
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Synovial Joint: A freely movable joint enclosed by a fibrous capsule and lubricated with synovial fluid; examples include the knee, hip and shoulder.
滑膜关节：可自由活动的关节，由纤维囊包裹并受滑液润滑，如膝关节、髋关节和肩关节。
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Articular Cartilage: Smooth, glassy tissue covering the ends of bones inside a synovial joint; it absorbs shock and minimises friction during movement.
关节软骨：覆盖滑膜关节骨端的光滑玻璃样组织，能缓冲震动并减少活动时的摩擦。
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Flexion / Extension: Flexion decreases the angle between two bones (bending), while extension increases it (straightening).
屈/伸：屈指减小两骨之间的角度（弯曲），伸指增大角度（伸直）。
2. Muscular System Vocabulary | 肌肉系统词汇
Muscle terminology explains how force is produced and controlled. Knowing these key concepts helps you tackle questions on contraction types and movement analysis.
肌肉术语解释了力量如何产生与控制。掌握这些核心概念有助于你应对收缩类型和动作分析类试题。
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Sarcomere: The smallest contractile unit of a muscle fibre, composed of overlapping actin and myosin filaments; its shortening produces muscle contraction.
肌节：肌纤维的最小收缩单位，由交错排列的肌动蛋白和肌球蛋白丝组成，其缩短引发肌肉收缩。
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Myofibril: A thread-like bundle of sarcomeres running the length of a muscle fibre; many myofibrils work together to generate tension.
肌原纤维：贯穿肌纤维全长的纤细肌节束，众多肌原纤维协同产生张力。
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Sliding Filament Theory: The model explaining muscle contraction, in which actin filaments slide over myosin filaments, pulling the Z-lines closer together.
肌丝滑行学说：解释肌肉收缩的模型，肌动蛋白丝在肌球蛋白丝上滑行，将 Z 线拉近。
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Isotonic Contraction: A muscle contraction where tension remains constant as the muscle changes length; it includes eccentric (lengthening) and concentric (shortening) phases.
等张收缩：肌肉张力保持恒定而长度改变的一种收缩，包含离心（拉长）和向心（缩短）阶段。
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Isometric Contraction: A contraction in which the muscle generates force but does not change length, such as holding a plank position.
等长收缩：肌肉产生力但长度不变的收缩，例如平板支撑时的肌肉状态。
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Agonist / Antagonist: The agonist is the prime mover causing a desired motion, while the antagonist opposes it to control the action.
主动肌/拮抗肌：主动肌是产生所需动作的主要肌肉，拮抗肌则对抗该动作以控制运动。
3. Cardiovascular & Respiratory Terms | 心血管与呼吸系统术语
The circulatory and respiratory systems work together to deliver oxygen and remove waste. These terms will help you explain the immediate and long-term responses to exercise.
循环系统与呼吸系统协同输氧排废。理解这些术语能帮助你阐释运动的即时反应和长期适应。
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Stroke Volume (SV): The volume of blood ejected by the left ventricle per beat; it increases during exercise due to stronger ventricular contractions.
每搏输出量：左心室每次搏动射出的血量，运动时因心室收缩增强而增大。
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Cardiac Output (Q): The product of heart rate and stroke volume (Q = HR x SV), expressing the total blood pumped by the heart per minute.
心输出量：心率与每搏输出量的乘积 (Q = HR x SV)，表示每分钟心脏泵出的总血量。
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Vascular Shunt: The redistribution of blood flow away from non-essential organs (e.g., gut) towards working muscles during exercise, mediated by vasodilation and vasoconstriction.
血管分流：运动中血流从非必需器官（如肠道）重新分配至工作肌群，由血管舒张和收缩介导。
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Venous Return: The volume of blood returning to the right atrium each minute; it is enhanced by the muscle pump, respiratory pump and valves during exercise.
静脉回流量：每分钟流回右心房的血量，运动中受肌肉泵、呼吸泵和静脉瓣的增强。
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Minute Ventilation (VE): The volume of air inhaled or exhaled per minute; calculated as tidal volume x breathing frequency.
每分通气量：每分钟吸入或呼出的气量，由潮气量乘以呼吸频率计算得出。
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Chemoreceptors: Specialised receptors in the carotid and aortic bodies that detect changes in blood CO2, O2 and pH, triggering adjustments in breathing rate.
化学感受器：位于颈动脉体和主动脉体的特化感受器，能感知血中 CO2、O2 和 pH 变化，引发呼吸速率调整。
4. Energy Systems Terminology | 能量系统术语
Understanding how the body resynthesises ATP is crucial for analysing performance in different activities. Memorise these terms to explain intensity, duration and fatigue.
理解身体如何再合成 ATP 对于分析不同运动表现至关重要。记住这些术语，轻松解释强度、时长与疲劳。
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ATP-PC (Alactic) System: Provides immediate energy for up to 8–10 seconds of high-intensity effort using stored phosphocreatine, without producing lactate.
ATP-PC（非乳酸）系统：借助储存的磷酸肌酸为长达 8–10 秒的高强度运动即时供能，不产生乳酸。
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Anaerobic Glycolytic System: Breaks down glucose/glycogen without oxygen to resynthesise ATP for intense efforts lasting 30–120 seconds, with lactate and H⁺ by-products.
无氧糖酵解系统：在无氧条件下分解葡萄糖/糖原再合成 ATP，支撑 30–120 秒的高强度运动，副产物为乳酸和 H⁺。
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Aerobic System: The oxygen-dependent pathway that completely breaks down carbohydrates and fats in mitochondria, providing sustained ATP for prolonged, lower-intensity exercise.
有氧系统：依赖氧在线粒体中彻底分解碳水化合物和脂肪，为长时间低强度运动持续提供 ATP。
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Lactate Threshold: The exercise intensity at which lactate begins to accumulate in the blood faster than it can be removed, often associated with the switch to heavy anaerobic contribution.
乳酸阈：乳酸在血液中开始积累的速度超过清除速度时的运动强度，通常标志着无氧供能比例显著上升。
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EPOC (Excess Post-exercise Oxygen Consumption): The elevated oxygen uptake following strenuous exercise, used to restore phosphocreatine stores, remove lactate and replenish myoglobin oxygen.
运动后过量氧耗：剧烈运动后升高的摄氧量，用于恢复磷酸肌酸储备、清除乳酸和补充肌红蛋白的氧。
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VO₂ max: The maximal oxygen uptake per minute per kilogram of body mass, a gold-standard measure of aerobic endurance capacity.
最大摄氧量：每分钟每千克体重的最大摄氧量，是有氧耐力能力的金标准指标。
5. Biomechanics Key Words | 生物力学关键词
Biomechanics applies mechanical principles to human movement. Mastering this vocabulary helps you explain technique efficiency, projectile motion and stability.
生物力学将力学原理应用于人体运动。掌握这些词汇有助于你阐明技术效率、抛体运动和身体稳定性。
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Newton’s First Law (Inertia): A body remains at rest or in uniform motion unless acted upon by an external force; explains why a sprinter must overcome inertia at the start.
牛顿第一定律（惯性）：物体保持静止或匀速直线运动状态，除非受外力作用；解释了短跑运动员起跑时需克服惯性。
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Centre of Mass: The point through which the entire weight of a body acts; its height and trajectory affect balance, flight and rotation in sports.
质心：物体全部重量的作用点，其高度和轨迹影响运动中的平衡、飞行和旋转。
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Moment of Inertia: A measure of an object’s resistance to angular rotation, depending on mass and its distribution relative to the axis; tucking in a spin reduces it and increases angular velocity.
转动惯量：物体抵抗角旋转的量度，取决于质量及其相对转轴的分布；冰上旋转收紧身体可减小转动惯量并增大角速度。
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Angular Momentum: The product of moment of inertia and angular velocity; remains constant in the air unless external torque acts, explaining conservation of spin in diving and gymnastics.
角动量：转动惯量和角速度的乘积，空中无外力矩时保持不变，解释了跳水和体操中的旋转守恒。
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First-Class Lever: The fulcrum lies between the effort and the load (e.g., neck extension), serving speed or balance depending on lever arm length.
第一类杠杆：支点在力点和阻力点之间（如颈部后伸），根据力臂长度可服务于速度或平衡。
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Second-Class Lever: The load rests between the fulcrum and the effort (e.g., plantar flexion during a calf raise), providing mechanical advantage for strength.
第二类杠杆：阻力点在支点和力点之间（如提踵时的跖屈），为力量提供机械优势。
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Third-Class Lever: The effort is applied between the fulcrum and the load (e.g., bicep curl), the most common in the human body, designed for range and speed of movement.
第三类杠杆：力点在支点和阻力点之间（如肱二头肌弯举），人体中最常见，专为运动的幅度和速度而设计。
6. Skill Acquisition Concepts | 技能习得概念
Effective coaching and learning rely on classifying skills and understanding stages of learning. These definitions will sharpen your evaluation of practice strategies.
有效的指导与学习需对技能进行分类并理解学习阶段。这些定义将提升你对练习策略的评价能力。
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Open Skill: A skill performed in an unpredictable, changing environment where the performer must react to external stimuli (e.g., a football pass during open play).
开放性技能：在不可预测、变化的环境中执行的技能，执行者须对外界刺激做出反应（如比赛中的足球传球）。
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Closed Skill: A skill executed in a stable, largely self-paced setting with minimal external interference (e.g., a gymnastics set routine).
封闭性技能：在稳定、主要由自身节奏主导且外界干扰极少的环境中执行的技能（如体操规定套路）。
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Cognitive Stage: The initial learning phase where the learner understands the task and builds a mental image, making frequent errors and requiring heavy conscious control.
认知阶段：学习的初始期，学习者理解任务并建立心象，频繁犯错且需大量意识控制。
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Associative Stage: The middle practice phase in which gross errors are eliminated, motor programmes are refined, and the performer begins to link movements more fluidly.
联结阶段：练习中期，大部分错误被消除，运动程序得到精炼，动作连贯性增强。
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Autonomous Stage: The final mastery phase where the skill becomes automatic, allowing the performer to focus on tactics and environmental cues with minimal conscious thought.
自动化阶段：最终的精通期，技能变为自动化，执行者可将注意力转向战术和环境线索而无需太多意识。
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Transfer of Learning: The influence of prior learning on the performance of a new skill; can be positive (helps), negative (hinders), or proactive/retroactive.
学习迁移：先前学习对新技能表现的影响，可分为正迁移（促进）、负迁移（阻碍）或前摄/倒摄迁移。
7. Sport Psychology Vocabulary | 运动心理学词汇
Psychological factors profoundly shape performance. Use these terms to discuss arousal, anxiety and team dynamics in exam essays.
心理因素深刻影响表现。可使用这些术语在考试论文中探讨唤醒水平、焦虑和团队动力。
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Drive Theory: The linear relationship suggesting that as arousal increases, performance of dominant responses improves; most accurate for simple or well-learned tasks.
驱力理论：认为唤醒水平提高，优势反应表现会增强的线性关系，对简单或高度熟练的任务最为适用。
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Inverted-U Hypothesis: Proposes that performance increases with arousal up to an optimal point; beyond that, further arousal causes performance deterioration.
倒 U 假说：认为表现随唤醒提高而上升直至最佳点，超过该点后继续升高的唤醒会导致表现下降。
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Catastrophe Theory: Describes a sudden, dramatic drop in performance when high cognitive arousal combines with high somatic anxiety, from which recovery is slow.
突变理论：描述高认知唤醒与高躯体焦虑结合时表现突然急剧下降且恢复缓慢的现象。
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Zone of Optimal Functioning (ZOF): An individualised range of anxiety/arousal in which athletes perform best; some excel with high, others with low anxiety.
最佳功能区：个体特有的焦虑/唤醒范围，在该区域内运动员表现最佳；有人在高焦虑下发挥出色，有人则相反。
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Social Facilitation: The tendency for performance to improve when an audience is present, especially for well-learned skills; can cause inhibition in novices.
社会助长效应：有他人在场时表现提升的趋势，尤其针对熟练技能；对新手可能引发社会抑制。
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SMART Goal Setting: Goals should be Specific, Measurable, Achievable, Relevant and
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