📚 Year 10 CAIE Physical Education: Core Concepts | CAIE 10年级体育：核心知识点梳理
Year 10 CAIE Physical Education students begin a deep exploration of the theoretical underpinnings behind human movement, health and sporting performance. A firm grasp of anatomy, physiology, training science and skill acquisition is essential for success in both the written papers and practical components. This revision guide summarises the core knowledge areas that form the foundation of the syllabus, pairing key concepts with clear explanations and comparisons.
CAIE 10年级体育课程要求学生开始系统性地探究人体运动、健康及运动表现背后的理论支撑。扎实掌握解剖学、生理学、训练科学以及技能习得等内容，对于笔试试卷和实践考核都至关重要。本复习指南梳理了构成课程大纲基础的核心知识领域，将关键概念与清晰解释和对比相结合，帮助学生高效复习。
1. The Skeletal System and Joints | 骨骼系统与关节
The human skeleton provides framework, protection, support, mineral storage and blood cell production. There are around 206 bones, classified as long, short, flat, irregular and sesamoid. Long bones such as the femur and humerus act as levers for movement, while flat bones like the cranium and pelvis shield vital organs.
人体骨骼提供框架、保护、支撑、矿物质储存和血细胞生成功能。人体约有206块骨头，按形态分为长骨、短骨、扁骨、不规则骨和籽骨。长骨如股骨和肱骨充当运动杠杆，而扁骨如颅骨和骨盆则保护重要脏器。
Key bones to know: cranium, clavicle, scapula, humerus, radius, ulna, pelvis, femur, patella, tibia, fibula, vertebrae, ribs, sternum. The spine is arranged in cervical, thoracic, lumbar, sacral and coccygeal regions to allow flexibility and posture.
需要掌握的关键骨骼有：颅骨、锁骨、肩胛骨、肱骨、桡骨、尺骨、骨盆、股骨、髌骨、胫骨、腓骨、椎骨、肋骨和胸骨。脊柱分为颈椎、胸椎、腰椎、骶椎和尾椎，提供灵活性与姿势维持。
Joints are sites where two or more bones meet. They are classified structurally as fibrous (immovable, e.g. skull sutures), cartilaginous (slightly movable, e.g. intervertebral discs) and synovial (freely movable). Synovial joints are most relevant to sport; their features include articular cartilage, synovial membrane, synovial fluid, joint capsule, ligaments and tendons.
关节是两块或多块骨骼的连接处。按结构可分为纤维关节（不动，如颅骨缝）、软骨关节（微动，如椎间盘）和滑液关节（自由活动）。滑液关节与体育运动最为密切，其结构特征包括关节软骨、滑膜、滑液、关节囊、韧带和肌腱。
The table below summarises the six types of synovial joints with examples.
下表总结了六种滑液关节类型及示例。
| Joint Type | Movement Allowed | Example |
|---|---|---|
| Ball and socket | Flexion/extension, abduction/adduction, rotation, circumduction | Shoulder, hip |
| Hinge | Flexion and extension only | Elbow, knee, ankle |
| Pivot | Rotation around a single axis | Neck (atlas and axis) |
| Gliding/plane | Sliding movements | Carpals, tarsals |
| Saddle | Flexion/extension, abduction/adduction, circumduction | Thumb |
| Condyloid | Flexion/extension, abduction/adduction, circumduction (no rotation) | Wrist |
2. The Muscular System and Movement | 肌肉系统与运动
There are three muscle types: skeletal muscle (voluntary, striated, attached to bones), smooth muscle (involuntary, found in organs) and cardiac muscle (involuntary, heart only). Skeletal muscles work across joints to create movement by contracting and pulling on bones. The main muscles involved in gross motor activities include the deltoid, pectorals, latissimus dorsi, biceps, triceps, abdominals, gluteals, quadriceps, hamstrings and gastrocnemius.
人体肌肉分为三种类型：骨骼肌（随意肌，横纹，附着于骨骼）、平滑肌（不随意肌，分布于内脏器官）和心肌（不随意肌，仅见于心脏）。骨骼肌跨越关节，通过收缩并牵拉骨骼产生运动。参与大肌肉群活动的主要肌肉有：三角肌、胸大肌、背阔肌、肱二头肌、肱三头肌、腹肌、臀肌、股四头肌、腘绳肌和腓肠肌。
Muscles work in pairs or groups. The agonist (prime mover) contracts to cause the movement, the antagonist relaxes to allow the action, and synergists assist or stabilise. For example, during a bicep curl, the biceps brachii is the agonist and the triceps brachii is the antagonist. When kicking a ball, the quadriceps act as agonists to extend the knee, while the hamstrings relax.
肌肉成对或成组工作。主动肌（原动肌）收缩产生运动，拮抗肌放松以便动作进行，协同肌则协助或稳定动作。例如，在弯举动作中，肱二头肌是主动肌，肱三头肌是拮抗肌。踢球时，股四头肌作为主动肌伸展膝关节，而腘绳肌放松。
Isotonic contractions involve movement and include concentric (muscle shortens) and eccentric (muscle lengthens under tension) phases. Isometric contractions occur when tension is generated but no visible movement happens, such as holding a plank position.
等张收缩涉及实际运动，包括向心收缩（肌肉缩短）和离心收缩（肌肉在张力下被拉长）。等长收缩则是肌肉产生张力但无明显位移，例如平板支撑动作。
3. The Respiratory System and Exercise | 呼吸系统与运动
Air enters through the nose or mouth, travels down the trachea, into the bronchi and bronchioles, and finally reaches the alveoli. The alveoli are tiny air sacs surrounded by capillaries where gaseous exchange takes place. Oxygen diffuses from the alveoli into the blood, while carbon dioxide moves from the blood into the alveoli to be exhaled.
空气经鼻腔或口腔进入，沿气管向下，通过支气管和细支气管，最终抵达肺泡。肺泡是微小的气囊，周围布满毛细血管，气体交换即在此进行。氧气从肺泡扩散入血液，二氧化碳则从血液进入肺泡被呼出体外。
Breathing in (inspiration) occurs when the intercostal muscles and diaphragm contract: the ribs move up and out, the diaphragm flattens, increasing the volume of the thoracic cavity and lowering pressure so air rushes in. During expiration, these muscles relax, the ribs fall and the diaphragm domes up, forcing air out.
吸气时，肋间肌和膈肌收缩：肋骨向上向外移动，膈肌变平，胸腔容积增大，压力降低，空气涌入肺部。呼气时，这些肌肉放松，肋骨下移，膈肌拱起，空气被排出。
ft in lungs after full exhalation). During exercise, tidal volume and breathing frequency increase, raising minute ventilation (VE = tidal volume × respiratory rate) to supply more oxygen to working muscles.
关键肺容量包括潮气量（正常呼吸量）、肺活量（最大吸气后能呼出的最大气量）和残气量（完全呼气后肺内残留的气量）。运动时，潮气量和呼吸频率均增加，使每分钟通气量（每分钟通气量 = 潮气量 × 呼吸频率）提高，为工作肌肉输送更多氧气。
4. The Circulatory System and Blood | 循环系统与血液
The cardiovascular system consists of the heart, blood vessels and blood. The heart has four chambers: right atrium, right ventricle, left atrium and left ventricle. Valves (tricuspid, bicuspid, pulmonary and aortic) prevent backflow of blood. The right side pumps deoxygenated blood to the lungs (pulmonary circulation), while the left side pumps oxygenated blood to the body (systemic circulation).
心血管系统由心脏、血管和血液组成。心脏有四个腔室：右心房、右心室、左心房和左心室。瓣膜（三尖瓣、二尖瓣、肺动脉瓣和主动脉瓣）防止血液倒流。右心将去氧血泵入肺部（肺循环），左心将氧合血泵送至全身（体循环）。
Blood vessels include arteries (thick, muscular walls, carry blood away from the heart under high pressure), veins (thinner walls, contain valves, return blood to the heart) and capillaries (one cell thick, site of exchange). Blood itself is composed of red blood cells (carry oxygen via haemoglobin), white blood cells (immune defence), platelets (clotting) and plasma (transport medium).
血管包括动脉（管壁厚而有肌性，高压下将血液运离心脏）、静脉（管壁较薄，含瓣膜，将血液送回心脏）和毛细血管（仅一个细胞厚，物质交换场所）。血液由红细胞（通过血红蛋白运输氧气）、白细胞（免疫防御）、血小板（止血凝血）和血浆（运输介质）构成。
During exercise, heart rate and stroke volume increase, raising cardiac output. The relationship is shown below.
运动时，心率和每搏输出量增加，从而提高心输出量。关系如下所示。
Cardiac Output (Q) = Heart Rate (HR) × Stroke Volume (SV)
心输出量 (Q) = 心率 (HR) × 每搏输出量 (SV)
A trained athlete typically has a lower resting heart rate and a higher stroke volume due to cardiac hypertrophy (enlarged left ventricle). Maximum heart rate can be estimated as 220 minus age.
训练有素的运动员由于心肌肥大（左心室增大），通常静息心率较低，每搏输出量更高。最大心率可用220减去年龄来估算。
5. Energy Systems and Recovery | 能量系统与恢复
ATP is the immediate energy currency for muscle contraction. The body has three energy systems to regenerate ATP. The ATP-PCr system (phosphocreatine) provides energy for very high-intensity exercise lasting up to 10 seconds, such as a 100 m sprint, without oxygen and with no lactic acid buildup, but PCr stores deplete quickly.
ATP是肌肉收缩的直接能源。人体有三大能量系统用于再生ATP。ATP-PCr系统（磷酸肌酸）为极短时间高强度运动（如百米冲刺）供能，持续最多约10秒，无需氧气，不产生乳酸，但磷酸肌酸储备消耗极快。
The anaerobic glycolytic system (lactic acid system) breaks down glucose without oxygen, producing ATP alongside pyruvic acid, which converts to lactic acid when oxygen is insufficient. This system dominates in events lasting 10 seconds to about 2 minutes (e.g. 400 m run). Lactic acid accumulation causes muscle fatigue and the burning sensation.
无氧糖酵解系统（乳酸系统）在无氧条件下分解葡萄糖产生ATP，同时生成丙酮酸，缺氧时丙酮酸转化为乳酸。该系统在持续10秒至约2分钟的运动中占主导（如400米跑）。乳酸堆积会导致肌肉疲劳和灼烧感。
The aerobic system uses oxygen to break down carbohydrates, fats and even protein in prolonged activities. It yields large amounts of ATP, is the primary system for activities lasting longer than 2–3 minutes, and produces carbon dioxide and water as by-products. Recovery after exercise includes repayment of oxygen debt (EPOC – excess post-exercise oxygen consumption) to remove lactic acid, replenish PCr and restore myoglobin oxygen stores.
有氧系统利用氧气分解碳水化合物、脂肪乃至蛋白质，主要支持2–3分钟以上的长时间运动。该系统产生大量ATP，副产物为二氧化碳和水。运动后恢复涉及氧债补偿（运动后过量氧耗 EPOC），用以清除乳酸、补充磷酸肌酸和恢复肌红蛋白氧储备。
6. Components of Fitness | 体能组成部分
Fitness is commonly divided into health-related and skill-related components. Health-related fitness includes cardiorespiratory endurance, muscular strength, muscular endurance, flexibility and body composition. Skill-related fitness comprises agility, balance, coordination, power, speed and reaction time.
体能通常分为健康相关体能与技能相关体能。健康相关体能包括心肺耐力、肌肉力量、肌肉耐力、柔韧性和身体成分。技能相关体能则包括敏捷性、平衡、协调、爆发力、速度和反应时。
Each component can be defined and linked to specific sports. Cardiorespiratory endurance is the ability of the heart and lungs to supply oxygen over sustained periods – essential for marathon runners. Muscular strength is the maximum force a muscle can exert in one contraction, critical in weightlifting. Agility involves changing direction quickly and accurately, seen in football dribbling. Power is the product of strength and speed, vital for a high jump take-off.
每一组成部分都有定义，并能与特定运动相联系。心肺耐力指心、肺长时间供氧的能力，马拉松运动员至关重要。肌肉力量是肌肉在单次收缩中能产生的最大力量，举重举足轻重。敏捷性指快速、准确改变方向的能力，体现在足球带球中。爆发力是力量与速度的结合，跳高起跳时不可或缺。
The table below lists definitions and test examples for health-related components.
下表列出了健康相关体能的定义及测试示例。
| Component | Definition | Fitness Test Example |
|---|---|---|
| Cardiorespiratory endurance | Ability to exercise the whole body for prolonged periods | Multi-stage fitness test (bleep test) |
| Muscular strength | Amount of force a muscle can exert against a resistance | Hand grip dynamometer |
| Muscular endurance | Ability to repeat contractions over time without fatigue | Sit-up or press-up test |
| Flexibility | Range of motion available at a joint | Sit and reach test |
| Body composition | Ratio of fat mass to fat-free mass in the body | Skinfold calipers or BMI |
7. Principles of Training and Methods | 训练原则与方法
Effective training programmes follow the principles of specificity, progression, overload, reversibility and tedium. Overload can be manipulated using the FITT principle: Frequency, Intensity, Time and Type. For example, to improve cardiorespiratory fitness, intensity might be set at 60–80% of maximum heart rate, frequency three times per week, time 30 minutes, and type continuous running.
有效的训练计划需遵循特定性、渐进性、超负荷、可逆性和单调性原则。超负荷可通过FITT原则操控：频率、强度、时间和类型。例如，为提升心肺耐力，强度可设为最大心率的60%–80%，频率每周三次，每次30分钟，类型为持续跑。
Training methods include continuous training (steady, long-duration aerobic work), interval training (alternating high-intensity bursts with recovery periods), circuit training (a series of exercises at stations targeting different fitness components), weight training (using resistance to build strength or endurance) and flexibility training (static, dynamic or PNF stretching). Each method has specific advantages and is suited to particular sports or goals.
训练方法包括持续训练（稳定的长时间有氧运动）、间歇训练（高强度爆发与恢复期交替）、循环训练（一系列站点练习，针对不同体能要素）、重量训练（利用阻力增强力量或耐力）和柔韧性训练（静态、动态或PNF拉伸）。每种方法各有特定的优势，适用于不同运动或目标。
Warm-up and cool-down are essential. A warm-up raises heart rate, increases muscle temperature, improves flexibility and mentally prepares the performer, reducing injury risk. A cool-down gradually lowers heart rate, prevents venous pooling and aids the removal of metabolic waste products such as lactic acid.
热身和放松不可或缺。热身能提升心率、增加肌肉温度、改善柔韧性并做好心理准备，降低受伤风险。放松可逐渐降低心率，防止血液淤积，并帮助清除乳酸等代谢废物。
8. Skill Classification and Information Processing | 技能分类与信息处理
Skills are classified along continua. The open–closed continuum refers to how much a skill is affected by the environment: an open skill like a football pass is unpredictable, while a closed skill such as a golf swing is self-paced with a stable environment. The gross–fine continuum describes the precision and muscle groups involved: a tackle in rugby is gross, a dart throw is fine.
技能可按连续体分类。开放–闭合连续体取决于技能受环境影响的程度：足球传球等开放技能环境多变、难以预测，而高尔夫挥杆等闭合技能则由运动员自主控制，环境稳定。粗放–精细连续体描述精确度和参与的肌群：橄榄球擒抱属粗放技能，飞镖投掷属精细技能。
Other continua include simple–complex (number of decisions and parts), discrete–serial–continuous (clear beginning and end) and self-paced–externally paced. For instance, a basketball free throw is self-paced, discrete and closed, while receiving a badminton smash is externally paced, open and complex.
还包括简单–复杂连续体（决策与子环节数量）、分立–序列–连续连续体（有无明确起止）以及自主步速–外部步速连续体。例如，篮球罚球为自主步速、分立、闭合技能，而接羽毛球扣杀则属于外部步速、开放、复杂技能。
Information processing models explain how performers respond to stimuli. A basic model includes input (sense organs receive information), decision-making (brain interprets, selects a response), output (nerve impulses sent to muscles) and feedback (information about the outcome). Memory systems – short-term sensory store, short-term memory and long-term memory – play a key role in learning and performing skills.
信息处理模型解释运动者如何应对刺激。基本模型包括输入（感官接收信息）、决策（大脑解读并选择反应）、输出（神经冲动传至肌肉）和反馈（关于结果的信息）。记忆系统——短时感觉存储、短时记忆和长时记忆——在技能学习与执行中起着关键作用。
9. Feedback and Motivation | 反馈与动机
Feedback is information a performer receives about their performance. It can be intrinsic (from within, e.g. kinaesthetic feelings) or extrinsic (from an external source, e.g. coach). It may be knowledge of performance (how the movement was executed) or knowledge of results (the outcome, e.g. score). Concurrent feedback is given during performance, terminal feedback afterwards. Effective feedback is specific, constructive and timed appropriately to enhance learning.
反馈是运动者获得的关于其表现的信息。可分为内在反馈（来自自身，如本体感觉）和外在反馈（来自外部，如教练）。可以是表现知觉（动作执行方式）或结果知觉（结果，如得分）。同步反馈在执行时给予，终端反馈在执行后提供。有效的反馈应当具体、有建设性且时机得当，以促进学习。
Motivation drives behaviour and can be intrinsic (enjoyment, personal satisfaction) or extrinsic (trophies, money, praise). Intrinsic motivation tends to lead to long-term engagement and resilience, while extrinsic rewards can boost initial effort but may undermine inner drive if overused. Arousal levels also affect performance, often described by the inverted-U theory: performance improves with increasing arousal up to an optimal point, beyond which it declines. Fine skills require lower arousal for precision; gross skills benefit from higher arousal.
动机驱动行为，可分为内在动机（乐趣、个人满足感）和外在动机（奖杯、金钱、表扬）。内在动机往往带来长期的投入与韧性，而外在奖励可激励初期努力，但过度使用可能削弱内在驱动力。唤醒水平也影响表现，倒U理论认为：表现随唤醒升高而提高，直至最佳点，之后下降。精细技能需要较低唤醒以保证精准；粗放技能在较高唤醒下表现更佳。
10. Health, Well-being and Nutrition | 健康、幸福与营养
Health is a holistic state of complete physical, mental and social well-being – not merely the absence of disease. Regular physical activity reduces the risk of obesity, cardiovascular disease, type 2 diabetes and mental health issues, while improving bone density, self-esteem and social connections. A balanced diet, adequate hydration and sufficient rest are crucial pillars supporting both health and athletic performance.
健康是身体、心理和社会全面完好的一种状态，而非仅仅没有疾病。规律的体育活动能降低肥胖、心血管疾病、2型糖尿病和心理健康问题的风险，同时提高骨密度、增强自尊和社交联系。均衡饮食、充足水分和充分休息是支撑健康与运动表现的重要支柱。
Macronutrients – carbohydrates (main energy source), fats (energy, insulation, organ protection) and proteins (growth, repair) – must be proportioned according to activity levels. Micronutrients such as vitamins and minerals (e.g. calcium for bones, iron for oxygen transport) are needed in small amounts. Hydration is critical because even slight dehydration impairs coordination, concentration and endurance. Sports performers are also exposed to social and cultural influences, including media, commercialisation, sponsorship and ethical issues such as doping, which all affect participation and perception of sport.
常量营养素——碳水化合物（主要能量来源）、脂肪（供能、保温、保护脏器）和蛋白质（生长与修复）——需根据活动水平合理配比。微量营养素如维生素和矿物质（钙强健骨骼，铁帮助氧运输）需求量
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