📚 Core Knowledge Essentials for Year 9 WJEC Physical Education | WJEC Year 9 体育核心知识点梳理
This article outlines the fundamental topics covered in Year 9 WJEC Physical Education, providing a clear and structured revision guide. Understanding these core concepts is essential for building a solid foundation in sport science, health and performance.
本文梳理了 WJEC Year 9 体育课程的核心主题，提供清晰的结构化复习指南。掌握这些基本概念对于奠定运动科学、健康与运动表现的坚实基础至关重要。
1. Health and Fitness | 健康与健身
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 activities without undue fatigue.
健康是一种身体、心理和社会完全良好的状态，而不仅仅是没有疾病。健身是指满足环境需求并在不过度疲劳的情况下完成日常活动的能力。
The relationship between health and fitness is close: regular physical activity improves both, reducing the risk of conditions such as obesity, heart disease and depression.
健康与健身的关系密切：规律的体育活动可以同时改善两者，降低肥胖、心脏病和抑郁等疾病的风险。
Exercising regularly can boost the immune system and enhance sleep quality, contributing to overall well-being.
规律锻炼可以增强免疫系统并提高睡眠质量，从而促进整体健康。
2. Components of Physical Fitness | 体能组成部分
Physical fitness is broken down into health-related and skill-related components. Health-related components are important for everyday health and include cardiovascular endurance, muscular strength, muscular endurance, flexibility and body composition.
体能分为健康相关和技能相关组成部分。健康相关组成部分对日常健康很重要，包括心血管耐力、肌肉力量、肌肉耐力、柔韧性和身体成分。
Skill-related components, sometimes called motor fitness, influence sporting performance. They are agility, balance, coordination, power, reaction time and speed.
技能相关组成部分有时称为运动体能，影响运动表现。它们包括敏捷性、平衡、协调性、爆发力、反应时间和速度。
| Component | 中文 |
|---|---|
| Cardiovascular Endurance | 心血管耐力 |
| Muscular Strength | 肌肉力量 |
| Muscular Endurance | 肌肉耐力 |
| Flexibility | 柔韧性 |
| Body Composition | 身体成分 |
| Agility | 敏捷性 |
| Balance | 平衡 |
| Coordination | 协调性 |
| Power | 爆发力 |
| Reaction Time | 反应时间 |
| Speed | 速度 |
3. Principles of Training | 训练原则
To improve fitness, training must follow key principles, commonly remembered as SPORT or FITT. The FITT principle helps design an effective exercise programme.
要提高体能，训练必须遵循关键原则，通常简记为 SPORT 或 FITT。FITT 原则有助于设计有效的锻炼计划。
FITT stands for Frequency, Intensity, Time and Type. Frequency is how often you train, Intensity is how hard you work, Time is the duration of each session, and Type is the kind of exercise performed.
FITT 代表频率、强度、时间和类型。频率指训练的次数，强度指训练的难度，时间指每次训练的时长，类型指所进行运动的种类。
Additional principles include Specificity (training must match the activity), Progression (gradually increasing demands), Overload (working harder than normal) and Reversibility (fitness losses occur when training stops).
其他原则包括专项性（训练必须与目标活动相匹配）、渐进性（逐渐增加负荷）、超负荷（比平时更努力）和可逆性（停止训练会导致体能下降）。
A typical goal is to apply the overload principle by adjusting FITT variables. For example, a runner might increase frequency from 3 to 4 times per week.
一个典型目标是应用超负荷原则，调整 FITT 变量。例如，跑步者可能将频率从每周三次增加到四次。
4. Methods of Training | 训练方法
Different training methods develop specific components of fitness. Continuous training involves steady exercise without rest, improving cardiovascular endurance.
不同的训练方法可以发展特定的体能组成部分。持续训练指不休息的稳定运动，可提高心血管耐力。
Interval training alternates periods of high-intensity work with recovery intervals. It is effective for improving speed, power and cardiovascular fitness.
间歇训练在高强度运动与恢复间歇之间交替进行。它对于提高速度、爆发力和心血管体能有高效。
Circuit training involves a series of exercises at stations, working different muscle groups. It can improve muscular endurance, strength and cardiovascular endurance simultaneously.
循环训练包含一系列在不同站点进行的练习，锻炼不同的肌群。它可以同时提高肌肉耐力、力量和心血管耐力。
Weight (resistance) training uses free weights, machines or body weight to build muscular strength and endurance. Plyometric training develops explosive power through jumping and bounding movements.
重量（抗阻）训练使用自由重量、器械或自重来增强肌肉力量和耐力。增强式训练通过跳跃和弹跳动作发展爆发力。
Flexibility training, such as static and dynamic stretching, improves the range of motion at joints and reduces injury risk.
柔韧性训练，如静态和动态拉伸，可增加关节的活动范围并降低受伤风险。
5. The Skeletal System | 骨骼系统
The skeleton provides shape, protection, movement, blood cell production and mineral storage. Major bones include the cranium, clavicle, scapula, humerus, radius, ulna, vertebrae, pelvis, femur, patella, tibia and fibula.
骨骼提供形状、保护、运动、血细胞生成和矿物质储存。主要骨骼包括颅骨、锁骨、肩胛骨、肱骨、桡骨、尺骨、椎骨、骨盆、股骨、髌骨、胫骨和腓骨。
Joints are where two or more bones meet. Synovial joints, such as hinge (elbow, knee) and ball-and-socket (shoulder, hip), allow a wide range of movement.
关节是两块或多块骨骼相遇的地方。滑膜关节，如铰链关节（肘、膝）和球窝关节（肩、髋），允许大幅度运动。
Movement patterns described in sport include flexion, extension, abduction, adduction, rotation and circumduction. Ligaments connect bone to bone, while tendons attach muscle to bone.
运动中描述的动作模式包括屈曲、伸展、外展、内收、旋转和环转。韧带将骨与骨连接，而肌腱将肌肉附着在骨上。
6. The Muscular System | 肌肉系统
Muscles work by contracting and pulling on bones to create movement. Voluntary muscles used in sport include the deltoid, biceps, triceps, pectorals, abdominals, quadriceps, hamstrings and gastrocnemius.
肌肉通过收缩并牵拉骨骼来产生运动。运动中使用的随意肌包括三角肌、肱二头肌、肱三头肌、胸肌、腹肌、股四头肌、腘绳肌和腓肠肌。
Antagonistic muscle pairs work together: when one contracts (agonist), the other relaxes (antagonist). For example, during a bicep curl, the biceps is the agonist and the triceps is the antagonist.
拮抗肌群协同工作：当一块肌肉收缩（主动肌）时，另一块放松（拮抗肌）。例如，在做肱二头肌弯举时，肱二头肌是主动肌，肱三头肌是拮抗肌。
Muscle contractions can be isotonic (muscle changes length, with movement), isometric (muscle stays the same length, no movement) or isokinetic (constant speed with variable resistance).
肌肉收缩可以是等张收缩（肌肉长度改变，产生运动）、等长收缩（肌肉长度不变，无运动）或等动收缩（恒定速度、阻力可变）。
7. The Cardiorespiratory System | 心肺系统
The cardiorespiratory system consists of the heart, blood vessels and lungs. Its function is to deliver oxygen to working muscles and remove waste products such as carbon dioxide.
心肺系统由心脏、血管和肺组成。其功能是将氧气输送到工作肌肉并清除二氧化碳等废物。
During exercise, heart rate, stroke volume and cardiac output increase. Cardiac output equals heart rate multiplied by stroke volume.
运动时，心率、每搏输出量和心输出量增加。心输出量等于心率乘以每搏输出量。
Breathing rate and tidal volume also rise to take in more oxygen. The respiratory system achieves gaseous exchange in the alveoli: oxygen enters the blood, and carbon dioxide is removed.
呼吸频率和潮气量也会增加，以摄入更多氧气。呼吸系统在肺泡内实现气体交换：氧气进入血液，二氧化碳被排出。
Regular aerobic training results in long-term adaptations, including a lower resting heart rate, increased stroke volume and greater lung efficiency.
规律的有氧训练会导致长期适应，包括较低的静息心率、增加的每搏输出量和更高的肺部效率。
8. Nutrition for Sport | 运动营养
A balanced diet provides energy, supports growth and repairs tissues. Macronutrients are carbohydrates, proteins and fats. Carbohydrates are the main energy source for high-intensity exercise.
均衡的饮食提供能量、支持生长和修复组织。宏量营养素包括碳水化合物、蛋白质和脂肪。碳水化合物是高强度运动的主要能量来源。
Proteins are essential for muscle repair and growth, while fats provide energy during low-intensity, long-duration activities. Micronutrients like vitamins and minerals support metabolic processes and bone health.
蛋白质对肌肉修复和生长至关重要，而脂肪在低强度长时间活动中提供能量。维生素和矿物质等微量营养素支持代谢过程和骨骼健康。
Carbohydrate loading is a strategy used before endurance events to maximise glycogen stores. The timing of meals is important: pre-event meals should be rich in complex carbohydrates and low in fat.
碳水化合物负荷是在耐力赛事之前用于最大化糖原储备的策略。进餐时机很重要：赛前餐应富含复合碳水化合物且低脂肪。
9. Hydration | 水分补充
Water makes up about 60% of body weight and is critical for temperature regulation, joint lubrication and nutrient transport. Dehydration significantly impairs performance and can lead to fatigue, cramps and overheating.
水约占体重的60%，对体温调节、关节润滑和营养运输至关重要。脱水会显著影响运动表现，并可能导致疲劳、抽筋和过热。
Fluid loss of just 2% of body mass can reduce physical and mental performance. It is important to hydrate before, during and after exercise.
体重仅2%的水分流失就能降低身体和心理表现。运动前、中、后补水都很重要。
Isotonic sports drinks can be beneficial during prolonged exercise as they supply fluid, electrolytes and carbohydrates. Water is sufficient for most activities lasting under an hour.
等渗运动饮料在长时间运动中可能有益，因为它们提供液体、电解质和碳水化合物。对于大多数持续一小时以下的活动，水就足够了。
10. Injury Prevention | 损伤预防
Preventing injuries is a key part of safe participation in physical activity. A proper warm-up raises heart rate, increases blood flow to muscles and improves flexibility, reducing the risk of strains and sprains.
预防损伤是安全参与体育活动的关键部分。正确的热身能提高心率，增加肌肉血流，改善柔韧性，降低拉伤和扭伤的风险。
A cool-down gradually lowers heart rate and helps remove lactic acid, reducing muscle soreness. Stretching during the cool-down maintains and develops flexibility.
整理活动能逐渐降低心率，帮助清除乳酸，减轻肌肉酸痛。整理时的拉伸可以保持和发展柔韧性。
Using correct equipment, playing within the rules and applying the principle of progression also minimise injury risk. Common injuries include fractures, dislocations, tennis elbow and shin splints.
使用正确的装备、遵守规则以及应用渐进性原则也能将损伤风险降到最低。常见损伤包括骨折、脱位、网球肘和胫骨疲劳性骨膜炎。
For immediate treatment, RICE (Rest, Ice, Compression, Elevation) is used for soft tissue injuries to control swelling and pain.
对于立即处理，软组织损伤可使用 RICE（休息、冰敷、加压、抬高）来控制肿胀和疼痛。
11. Introduction to Sports Psychology | 运动心理学入门
Mental factors profoundly affect sporting performance. Arousal refers to the level of mental and physical readiness. According to the inverted-U theory, an optimal level of arousal exists for peak performance.
心理因素深刻影响运动表现。唤醒水平指心理和身体的准备状态。根据倒U型理论，存在一个最佳唤醒水平以实现巅峰表现。
Anxiety can be cognitive (negative thoughts) or somatic (physical symptoms like increased heart rate). Deep breathing, positive self-talk and visualisation can manage anxiety before a match.
焦虑可能是认知性的（消极想法）或躯体性的（心率加快等身体症状）。深呼吸、积极的自我对话和视觉化想象可以在赛前管理焦虑。
Personality types, such as introverts and extroverts, may be drawn to different sports. Introverts often prefer individual precision sports, while extroverts thrive in high-action team environments.
性格类型，如内向者和外向者，可能会被不同的运动项目吸引。内向者通常偏爱个人精密型运动，而外向者在高活力的团队环境中表现出色。
12. Goal Setting and Motivation | 目标设定与动机
Motivation can be intrinsic (coming from within, for enjoyment) or extrinsic (from external rewards like trophies or praise). A blend of both is often effective for sustaining effort.
动机可以是内在的（来自内心，为了乐趣）或外在的（来自奖杯或表扬等外部奖励）。两者的结合往往能有效维持努力。
SMART goals (Specific, Measurable, Achievable, Relevant, Time-bound) provide a clear framework for improvement. For example, 'increase my bleep test score by one level in four weeks' is a SMART target.
SMART 目标（具体的、可衡量的、可实现的、相关的、有时限的）提供了一个清晰的进步框架。例如，“在四周内将我的多级折返跑成绩提升一级”就是一个 SMART 目标。
Goal setting boosts motivation by providing focus, increasing persistence and promoting the development of new strategies. Performance goals relate to personal achievement, while outcome goals focus on winning.
设定目标通过提供焦点、增强毅力和促进新策略的发展来提升动机。表现目标与个人成就有关，而结果目标关注获胜。
Published by TutorHao | Physical Education Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图