📚 Year 8 WJEC Physical Education: Core Knowledge Review | Year 8 WJEC 体育：核心知识点梳理
This article provides a comprehensive overview of the core knowledge areas covered in the Year 8 WJEC Physical Education curriculum. It covers health and fitness, body systems, movement, skill acquisition, and safety, helping students consolidate their understanding.
本文全面梳理了 Year 8 WJEC 体育课程的核心知识领域，涵盖健康与体能、身体系统、动作原理、技能习得以及安全防护等内容，帮助同学们巩固理解。
1. Health and Fitness | 健康与体能
Health is a state of complete physical, mental and social well-being, not merely the absence of disease. Fitness refers to the ability to meet the demands of the environment and carry out daily tasks without undue fatigue.
健康是一种身体、心理和社交完全良好的状态，而不仅仅是没有疾病。体能则是指满足环境需求、完成日常任务而无过度疲劳的能力。
Being physically active contributes to all three aspects of health. For example, regular exercise can improve mood (mental well-being), help you make friends through team sports (social well-being), and reduce the risk of obesity (physical well-being).
经常参加体育活动有助于实现三方面的健康。例如，规律锻炼可以改善情绪（心理健康），通过团队运动结交朋友（社交健康），并降低肥胖风险（身体健康）。
2. Components of Fitness | 体能构成要素
Fitness is divided into health-related components and skill-related components. Health-related components are important for everyone, while skill-related components are more specific to sports performance.
体能分为健康相关要素和技能相关要素。健康相关要素对每个人都很重要，而技能相关要素则更侧重于运动表现。
Health-related components include cardiovascular endurance, muscular strength, muscular endurance, flexibility and body composition. Skill-related components include agility, balance, coordination, power, reaction time and speed.
健康相关要素包括心血管耐力、肌肉力量、肌肉耐力、柔韧性和身体成分。技能相关要素包括敏捷性、平衡能力、协调性、爆发力、反应时间和速度。
| Health-related Component | 健康相关要素 |
|---|---|
| Cardiovascular endurance (aerobic power) | 心血管耐力（有氧能力） |
| Muscular strength (maximal force) | 肌肉力量（最大力量） |
| Muscular endurance (repeated contractions) | 肌肉耐力（重复收缩能力） |
| Flexibility (range of motion at a joint) | 柔韧性（关节活动范围） |
| Body composition (ratio of fat to fat-free mass) | 身体成分（脂肪与去脂体重的比例） |
| Skill-related Component | 技能相关要素 |
|---|---|
| Agility (changing direction quickly) | 敏捷性（快速改变方向的能力） |
| Balance (maintaining centre of mass over base of support) | 平衡能力（保持重心在支撑面上的能力） |
| Coordination (using two or more body parts smoothly) | 协调性（两个或多个身体部位流畅配合） |
| Power (strength x speed) | 爆发力（力量 × 速度） |
| Reaction time (time taken to initiate a response) | 反应时（启动反应所需的时间） |
| Speed (distance/time) | 速度（距离 ÷ 时间） |
3. Principles of Training | 训练原则
To improve fitness effectively, training must follow the SPORT principles: Specificity, Progression, Overload, Reversibility and Tedium. Overload can be applied using the FITT formula: Frequency, Intensity, Time and Type.
要有效提升体能，训练必须遵循 SPORT 原则：针对性、渐进性、超负荷、可逆性和避免单调性。超负荷可以通过 FITT 公式来实现：频率、强度、时间和类型。
Specificity means training must be relevant to the sport or goal. Progression requires gradually increasing the workload. Overload means pushing the body beyond its current limits, which can be adjusted by changing any FITT variable. Reversibility warns that fitness gains are lost when you stop training. Tedium highlights the need for variety to stay motivated.
针对性指训练必须与运动项目或目标相关。渐进性要求逐步增加训练负荷。超负荷意味着让身体承受超出当前能力的压力，可以通过改变任何 FITT 变量来调整。可逆性提醒一旦停止训练，获得的体能就会退步。避免单调性强调需要变化来保持积极性。
FITT Principle: Frequency – how often; Intensity – how hard; Time – how long; Type – kind of exercise
FITT 原则：频率 – 训练频率；强度 – 负荷强度；时间 – 持续时间；类型 – 运动方式
4. The Skeletal System | 骨骼系统
The skeleton provides support, protection, movement, blood cell production and mineral storage. Major bones you need to know for Year 8 WJEC include: cranium, clavicle, scapula, humerus, radius, ulna, pelvis, femur, patella, tibia, fibula, vertebrae, ribs and sternum.
骨骼具有支持、保护、运动、造血和储存矿物质的功能。Year 8 WJEC 要求掌握的主要骨骼包括：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。
Joints are where two or more bones meet. Synovial joints like the hinge (elbow, knee) and ball-and-socket (shoulder, hip) allow a wide range of movement. Ligaments connect bone to bone, while tendons connect muscle to bone.
关节是两块或多块骨骼相连接的地方。滑膜关节，如屈戍关节（肘部、膝部）和球窝关节（肩部、髋部），允许较大范围的活动。韧带将骨骼连接在一起，而肌腱则将肌肉连接到骨骼上。
5. The Muscular System | 肌肉系统
Muscles work in pairs to produce movement at joints. The prime mover (agonist) contracts to cause movement, while the antagonist relaxes. Key muscles include: deltoid, pectorals, biceps, triceps, abdominals, quadriceps, hamstrings, gastrocnemius and gluteals.
肌肉成对工作，以在关节处产生动作。主动肌（原动肌）收缩产生动作，同时拮抗肌放松。需要掌握的关键肌肉包括：三角肌、胸肌、肱二头肌、肱三头肌、腹肌、股四头肌、腘绳肌、腓肠肌和臀肌。
For example, during a bicep curl, the biceps brachii is the agonist and the triceps brachii is the antagonist. Muscle contractions can be isotonic (movement occurs, such as concentric and eccentric) or isometric (no movement, tension remains constant).
例如，在进行肱二头肌弯举时，肱二头肌为主动肌，肱三头肌为拮抗肌。肌肉收缩可分为等张收缩（产生运动，如向心和离心收缩）和等长收缩（不发生运动，张力保持不变）。
6. Movement Analysis | 动作分析
Movement can be described using planes and axes. There are three planes of motion: sagittal (divides body into left and right), frontal (divides into front and back), and transverse (divides into top and bottom). Axes include transverse, sagittal and longitudinal.
动作可以用平面和轴来描述。运动平面有三个：矢状面（将身体分为左右两部分）、额状面（分为前后两部分）和水平面（分为上下两部分）。轴包括横轴、矢状轴和垂直轴。
Joint actions that occur in these planes include flexion, extension, abduction, adduction, rotation and circumduction. Knowing which plane and axis a movement occurs in helps analyse sporting techniques.
在这些平面中发生的关节动作包括屈、伸、外展、内收、旋转和环转。了解动作发生在哪个平面和轴上，有助于分析运动技术。
7. Effects of Exercise on the Body | 运动对身体的影响
During exercise, the body undergoes immediate short-term effects. Heart rate, stroke volume and cardiac output increase, delivering more oxygen to working muscles. Breathing rate and tidal volume rise to take in more oxygen and remove carbon dioxide.
运动时身体会出现即时短期效应。心率、每搏输出量和心输出量增加，为工作肌肉输送更多氧气。呼吸频率和潮气量上升，以摄入更多氧气并排出二氧化碳。
Long-term adaptations from regular training include a lower resting heart rate, increased stroke volume, stronger heart muscles, improved lung capacity, and more efficient energy systems. Muscles hypertrophy and bone density improves.
长期规律训练带来的适应性变化包括安静心率降低、每搏输出量增加、心肌更强壮、肺活量提高，以及能量系统更有效率。肌肉会出现肥大，骨密度也会提高。
8. Skill Classification | 技能分类
Skills can be placed on continua based on different characteristics. Common classifications include open–closed, gross–fine, self-paced–externally paced, discrete–serial–continuous, and simple–complex.
技能可以根据不同特征在连续体上进行分类。常见的分类包括开放–封闭、粗大–精细、自定节奏–外部节奏、分立–序列–连续性，以及简单–复杂。
An open skill is performed in an unpredictable environment (e.g., tackling in rugby), whereas a closed skill is performed in a stable, predictable setting (e.g., a tennis serve). A gross skill uses large muscle groups (e.g., running), while a fine skill uses smaller muscle groups (e.g., a snooker shot).
开放技能在不可预测的环境中执行（如橄榄球中的擒抱），而封闭技能则在稳定可预测的环境中执行（如网球发球）。粗大技能动用大肌肉群（如跑步），精细技能则动用小肌肉群（如斯诺克击球）。
9. Feedback and Information Processing | 反馈与信息处理
When learning or performing a skill, the brain processes information using the input–decision–output model. Input comes from the senses, decision making selects the appropriate response, and output is the movement execution. Feedback is vital for improvement.
学习或执行技能时，大脑通过输入–决策–输出模型处理信息。输入来自感官，决策阶段选择适当的反应，输出则是动作执行。反馈对于改进至关重要。
Intrinsic feedback is felt internally (kinesthesis), while extrinsic feedback comes from external sources like a coach. Knowledge of results (KR) tells you the outcome, and knowledge of performance (KP) provides information about how the movement was performed.
内在反馈是从内部感受到的（动觉），而外在反馈来自外部来源，如教练。结果反馈（KR）告诉你结果如何，表现反馈（KP）则提供关于动作执行方式的信息。
10. Warm-up and Cool-down | 热身与放松
A warm-up prepares the body for exercise and reduces injury risk. It should include a pulse raiser, mobility exercises, dynamic stretching and sport-specific drills. Warm-up increases blood flow, muscle temperature and pliability of tissues.
热身能让身体为运动做好准备并降低受伤风险。它应包括提高心率的动作、关节活动度练习、动态拉伸和专项运动练习。热身能增加血流量、肌肉温度和组织的柔韧性。
A cool-down helps the body recover after exercise. It involves light aerobic activity and static stretching. Cool-down aids removal of waste products like lactic acid and helps prevent muscle soreness.
放松活动帮助身体在运动后恢复，包括轻度有氧运动和静态拉伸。放松有助于清除乳酸等代谢废物，并防止肌肉酸痛。
11. Nutrition and Hydration | 营养与补水
A balanced diet provides energy, promotes growth and repairs body tissues. Macronutrients include carbohydrates, proteins and fats. Carbohydrates are the body’s main fuel source, proteins are needed for repair, and fats provide energy for low-intensity exercise.
均衡饮食能提供能量、促进生长发育并修复身体组织。常量营养素包括碳水化合物、蛋白质和脂肪。碳水化合物是身体的主要能量来源，蛋白质用于组织修复，脂肪则为低强度运动提供能量。
Hydration is equally important. Even slight dehydration can impair performance, causing dizziness, fatigue and reduced concentration. The recommendation is to drink water before, during and after exercise.
补水同样重要。即使是轻度脱水也会损害运动表现，导致头晕、疲劳和注意力下降。建议在运动前、中、后都要喝水。
12. Injury Prevention and Safety | 损伤预防与安全
Preventing injury is a key part of PE. Common precautions include wearing appropriate clothing and protective equipment, checking equipment and facilities, following rules, and avoiding overtraining. The R.I.C.E. method (Rest, Ice, Compression, Elevation) is used for minor sprains and strains.
预防损伤是体育课的关键部分。常见的防护措施包括穿戴适宜的服装和护具、检查器材和场地、遵守规则以及避免过度训练。R.I.C.E. 方法（休息、冰敷、加压、抬高）常用于轻微的扭伤和拉伤。
Good technique and an effective warm-up also reduce the risk. In all settings, listening to the teacher or coach ensures a safe environment. Knowing how to recognise and respond to injuries helps keep everyone safe.
良好的技术动作和有效的热身也能降低风险。在任何情况下，听从教师或教练的指导都能确保安全环境。懂得识别和处理受伤情况，有助于保障每个人的安全。
Published by TutorHao | Physical Education Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
屏轩国际教育cambridge primary/secondary checkpoint, cat4, ukiset,ukcat,igcse,alevel,PAT,STEP,MAT, ibdp,ap,ssat,sat,sat2课程辅导，国外大学本科硕士研究生博士课程论文辅导