📚 Case Study Practical Drill for IGCSE Cambridge Physical Education | IGCSE Cambridge 体育：案例分析实战演练
Case study questions in IGCSE Cambridge Physical Education test more than factual recall. They require you to apply physiology, skill acquisition, training principles and socio-cultural knowledge to real sporting situations. This article provides a structured drill of eight worked case studies, followed by an exam answer template and common pitfalls. Use these examples to build the habit of linking theory to context before you write your final answer.
IGCSE Cambridge 体育考试中的案例分析题考查的不仅是知识记忆。它要求你将生理学、技能习得、训练原则和社会文化知识应用到真实的运动情境中。本文提供八个案例的实战演练，并附上答题模板与常见误区。请利用这些例子养成先联系理论再作答的习惯。
1. How to Read a PE Case Study | 如何解读体育案例
Begin by identifying the performer, the sport, the stated problem and the command word. Underline whether the question asks for description, explanation, evaluation or justification. Then decide which syllabus area applies: anatomy and physiology, health and fitness, skill acquisition, psychology, or social and cultural influences.
作答时先识别案例中的运动者、运动项目、明确问题和指令词。划出题目是要求描述、解释、评价还是论证。然后判断该案例涉及大纲的哪个板块：解剖与生理、健康与体适能、技能习得、心理学，或社会与文化影响。
Use the PEE structure in longer answers: Point, Evidence from the case, Explanation using PE theory. For a 6-mark case study answer, aim for at least three clear PEE points. Avoid copying the case text without interpretation; examiners award marks for applying theory, not for repeating information.
在较长的答案中使用 PEE 结构：观点、案例证据、用体育理论解释。对于 6 分的案例分析题，至少写出三个清晰的 PEE 要点。不要只抄案例文字而不加解释；考官为理论应用给分，不会为重复信息给分。
A quick reading checklist is shown below.
下面的表格给出了快速审题清单。
- Performer: age, sex, training level, sport position
- 运动者：年龄、性别、训练水平、运动位置
- Problem: fatigue, injury, poor skill, anxiety, unfair behaviour
- 问题：疲劳、受伤、技能差、焦虑、违规行为
- Command word: describe, explain, evaluate, justify
- 指令词：描述、解释、评价、论证
- Theory link: e.g. aerobic system, feedback, FITT, ethics
- 理论联系：如有氧系统、反馈、FITT、伦理
2. Case 1: Aerobic vs Anaerobic Demands in a 1500 m Runner | 案例一：1500米跑者的有氧与无氧需求
Case: A 16-year-old school runner completes a 1500 m race in 5 minutes 10 seconds. In the first lap she feels strong, but in the final 300 m her legs become heavy and her breathing rate rises sharply. Explain the changing energy system demands during her race and how training can improve her finish.
案例：一名 16 岁的学校跑者以 5 分 10 秒完成 1500 米比赛。第一圈她感觉轻松，但最后 300 米双腿沉重、呼吸频率急剧上升。请解释她在比赛中能量系统需求的变化，以及如何通过训练改善她的冲刺表现。
The 1500 m is mainly an aerobic event, but the final 300 m requires a strong anaerobic contribution. During the first 1200 m, the aerobic system supplies most ATP through the breakdown of glucose and fats in the presence of oxygen. This produces a large amount of ATP without rapid fatigue.
1500 米主要是有氧项目，但最后 300 米需要较强的无氧供能。前 1200 米中，有氧系统通过氧气参与下的葡萄糖和脂肪分解提供大部分 ATP。这种方式能产生大量 ATP 且不易快速疲劳。
In the final 300 m, the runner speeds up, so oxygen demand exceeds supply. The anaerobic glycolytic system begins to dominate, producing ATP quickly but also forming lactic acid. The accumulation of lactic acid lowers muscle pH and contributes to the heavy sensation and fatigue the runner feels in her legs.
在最后 300 米，跑者加速，氧需求超过氧供应。无氧糖酵解系统开始占主导，快速产生 ATP 但也生成乳酸。乳酸堆积降低肌肉 pH 值，导致她腿部沉重和疲劳的感觉。
To improve her finish, the runner should add interval training at race pace or slightly faster, with incomplete recovery. This develops lactic acid tolerance and improves the anaerobic threshold. She should also maintain aerobic base work, because a stronger aerobic system helps remove lactic acid during recovery periods.
为了改善冲刺表现，跑者应增加比赛配速或稍快配速的间歇训练，并采用不完全恢复。这能提高乳酸耐受能力并改善无氧阈。同时她应保持有氧基础训练，因为更强的有氧系统有助于在恢复期清除乳酸。
3. Case 2: Skill Classification and Feedback in Basketball Free Throw | 案例二：篮球罚球中的技能分类与反馈
Case: A basketball player has a 55% free throw success rate. Her coach notices that her elbow position changes on every attempt. She practices alone for 30 minutes daily, but her success rate does not improve. Classify the free throw skill and recommend two types of feedback with reasons.
案例：一名篮球运动员罚球命中率为 55%。教练注意到她每次投篮时肘部位置都不一样。她每天独自练习 30 分钟，但命中率没有提高。请对罚球技能进行分类，并推荐两种反馈类型并说明理由。
A free throw is a closed, self-paced, fine and discrete skill. It is closed because the environment is stable and predictable; self-paced because the performer controls when to start; fine because it requires precise small muscle movements; and discrete because it has a clear beginning and end.
罚球是一项封闭式、自主节奏、精细且离散的技能。封闭式是因为环境稳定、可预测；自主节奏是因为运动者控制开始时间；精细是因为需要精确的小肌肉群动作；离散是因为它有明确的开始和结束。
Because the performer practices alone, she lacks external feedback about her technique. Her elbow position keeps changing, so the first recommendation is knowledge of performance from video analysis or a coach. This gives specific information about movement quality, not just the result, helping her to correct elbow alignment.
由于这名运动员独自练习，她缺少关于技术动作的外部反馈。她的肘部位置不断变化，因此第一个建议是通过录像分析或教练提供表现反馈。这种反馈提供关于动作质量的具体信息，而不仅仅是结果，帮助她纠正肘部位置。
The second recommendation is knowledge of results combined with a target score. She should record her success rate and set a target, such as 8 out of 10. Knowledge of results alone does not tell her how to improve, but combined with knowledge of performance it can reinforce successful attempts and maintain motivation.
第二个建议是结果反馈并结合目标分数。她应记录命中率并设定目标，如十投八中。单独的结果反馈不能告诉她如何改进，但与表现反馈结合可以强化成功尝试并保持动机。
A short table compares the two feedback types.
下表比较两种反馈类型。
| Feedback type | What it tells the player | Best for this case |
| Knowledge of performance | Quality of movement, e.g. elbow angle | Correcting technique |
| Knowledge of results | Outcome, e.g. made or missed | Motivation and goal setting |
4. Case 3: Applying FITT Principles to an Overtrained Swimmer | 案例三：对过度训练游泳者应用 FITT 原则
Case: A 15-year-old competitive swimmer trains 12 hours per week. Recently her 100 m freestyle time has become slower and she reports constant tiredness and poor sleep. Her coach suspects overtraining. Use the FITT principle to redesign her next four-week training block.
案例：一名 15 岁的竞技游泳运动员每周训练 12 小时。最近她 100 米自由泳成绩变慢，并报告持续疲劳和睡眠不佳。教练怀疑她过度训练。请使用 FITT 原则重新设计她未来四周的训练计划。
FITT stands for Frequency, Intensity, Time and Type. In overtraining, the first change is usually to reduce training frequency and intensity while maintaining some aerobic activity. For this swimmer, frequency should drop from six sessions to four sessions per week to allow recovery.
FITT 代表频率、强度、时间和类型。过度训练时，首要改变通常是降低训练频率和强度，同时保持一定的有氧活动。对于这名游泳者，频率应从每周六次减少到每周四次，以促进恢复。
Intensity should be reduced from repeated sprint and threshold sets to low and moderate aerobic swimming. Use a simple measure such as rating of perceived exertion: most sessions should feel 12–14 on the 6–20 Borg scale. Time can stay around 45–60 minutes per session, but the total weekly volume should fall from 12 hours to about 4–5 hours.
强度应从反复冲刺和阈强度训练降低到中低强度有氧游泳。可采用主观用力感觉量表进行监控：大多数训练课应控制在 6–20 Borg 量表的 12–14。时间可保持在每次 45–60 分钟，但每周总训练量应从 12 小时降至约 4–5 小时。
Type should include easy freestyle, backstroke and kicking drills, plus one session of light land-based mobility work. Avoid heavy resistance training and maximal sprints for two weeks. After two weeks, gradually increase intensity by adding short intervals at 80% effort, but only if sleep and resting heart rate have returned to normal.
训练类型应包括轻松自由泳、仰泳和打腿练习，外加一次轻松的陆上灵活性训练。两周内避免大负荷抗阻训练和最大强度冲刺。两周后，如果睡眠和安静心率恢复正常，可逐渐增加强度，加入 80% 强度的短间歇。
A simple progression rule is shown below.
每周总训练量 = 频率 × 每次时长 × 强度因子
This formula is a useful way to show the examiner that you understand how FITT variables interact rather than treating them separately.
这一公式是向考官展示你理解 FITT 变量之间相互作用的好方法，而不是将它们割裂开来处理。
5. Case 4: Nutrition and Hydration for a Match-Day Footballer | 案例四：足球运动员比赛日营养与补水
Case: A midfielder is due to play a 90-minute football match at 14:00 on a warm day. He often feels dizzy in the last 15 minutes and complains of muscle cramps. Plan his pre-match meal, during-match fluid intake and post-match recovery nutrition.
案例：一名中场球员将在温暖天气下于 14:00 参加一场 90 分钟的足球比赛。他经常在最后 15 分钟感到头晕并出现肌肉痉挛。请为他计划赛前餐、赛中补液和赛后恢复营养。
The pre-match meal should be eaten 2–3 hours before kick-off, so around 11:00–12:00. It must be high in complex carbohydrates, moderate in protein and low in fat and fibre to speed gastric emptying. Suitable choices include pasta with a tomato-based sauce, a banana and water.
赛前餐应在开球前 2–3 小时食用，即 11:00–12:00 左右。食物应富含复合碳水化合物、适量蛋白质、低脂肪低纤维以加快胃排空。适合的选择包括番茄酱意面、一根香蕉和水。
During the match, the player should drink small amounts of an isotonic sports drink every 15–20 minutes, aiming for about 150–250 ml per break. Isotonic drinks contain 6–8% carbohydrate and electrolytes such as sodium, which helps replace salts lost in sweat and reduces the risk of muscle cramp.
比赛中，球员应每 15–20 分钟少量饮用等渗运动饮料，每次约 150–250 毫升。等渗饮料含有 6–8% 的碳水化合物和钠等电解质，有助于补充汗液中流失的盐分，降低肌肉痉挛风险。
Post-match recovery should begin within 30 minutes of the final whistle. A snack combining carbohydrate and protein in a 3:1 or 4:1 ratio, such as chocolate milk or a chicken sandwich with fruit juice, helps restore muscle glycogen and repair muscle tissue. Continue rehydration with water or an electrolyte drink until urine colour is pale yellow.
赛后恢复应在终场哨响后 30 分钟内开始。一份碳水化合物与蛋白质比例为 3:1 或 4:1 的加餐，如巧克力奶或鸡肉三明治加果汁，有助于恢复肌糖原和修复肌肉组织。继续用水或电解质饮料补水，直到尿液颜色变为浅黄色。
Common exam errors include recommending protein as the main pre-match fuel or suggesting plain water only during prolonged sweating. Plain water lacks electrolytes and can dilute blood sodium if consumed in very large amounts.
常见考试错误包括建议将蛋白质作为赛前主要燃料，或建议长时间出汗时只喝白水。白水缺乏电解质，如果大量饮用还可能稀释血钠。
6. Case 5: Injury Prevention and Ankle Sprain Rehabilitation | 案例五：损伤预防与踝关节扭伤康复
Case: A netball player lands on another player’s foot and inverts her ankle. She has pain, swelling and cannot bear weight. Describe the immediate treatment and explain the principles of a progressive rehabilitation programme.
案例：一名无挡板篮球运动员落地时踩到他人脚上，造成踝关节内翻。她感到疼痛、肿胀且无法承重。请描述即时处理方法，并解释渐进式康复计划的原则。
Immediate treatment follows the RICE protocol: Rest, Ice, Compression and Elevation. Rest prevents further damage; ice applied for 20 minutes every 2–3 hours reduces pain and swelling; compression with a bandage limits swelling; elevation above heart level helps fluid drainage.
即时处理遵循 RICE 原则：休息、冰敷、加压和抬高。休息可防止进一步损伤；每 2–3 小时冰敷 20 分钟可减轻疼痛和肿胀；用绷带加压可限制肿胀；将患处抬高至心脏以上有助于液体回流。
After the acute phase, rehabilitation should follow a gradual sequence: first restore pain-free range of motion, then rebuild strength, then improve proprioception and balance, and finally return to sport-specific drills. A progression example is drawing the alphabet with the toes, then calf raises, then single-leg balance on a wobble board, then netball footwork drills.
急性期过后，康复应遵循渐进顺序：首先恢复无痛活动范围，然后重建力量，接着改善本体感觉和平衡，最后恢复到专项运动练习。例如用脚趾写字母、提踵、在平衡板上单腿站立，再到无挡板篮球步法练习。
Proprioception training is essential after ankle sprains because damaged ligaments reduce joint position sense. Without retraining balance, the ankle is more likely to be sprained again. A common exam point is to explain why returning to full competition too early increases re-injury risk.
踝关节扭伤后必须进行本体感觉训练，因为受损韧带会降低关节位置感。如果不重新训练平衡能力，踝关节更容易再次扭伤。考试中常见的得分点是解释为什么过早恢复完整比赛会增加再次受伤风险。
Injury prevention strategies for netball include wearing supportive footwear, taping or bracing a previously injured ankle, warming up properly, and practising safe landing technique with knees bent and feet shoulder-width apart.
无挡板篮球的损伤预防策略包括穿着支撑性好的鞋子、对曾受伤的踝关节使用贴布或护具、充分热身，以及练习屈膝、双脚与肩同宽的安全落地技术。
7. Case 6: Arousal, Anxiety and Mental Rehearsal in Gymnastics | 案例六：体操中的唤醒、焦虑与心理演练
Case: A gymnast performs a strong beam routine in training but falls repeatedly in competition. She reports a racing heart, dry mouth and negative thoughts before competing. Use arousal and anxiety theory to explain her performance and suggest two psychological techniques to help her.
案例：一名体操运动员在训练中平衡木表现出色，但在比赛中屡次掉下器械。她报告赛前心跳加速、口干和消极想法。请用唤醒和焦虑理论解释她的表现，并提出两种心理技巧帮助她。
Her symptoms show high somatic and cognitive anxiety. According to the inverted-U theory, performance improves as arousal increases up to an optimal point, but beyond that point performance declines. In competition, her arousal level is likely too high, causing muscle tension and loss of fine motor control on the beam.
她的症状表明躯体焦虑和认知焦虑都很高。根据倒 U 理论，表现随唤醒水平提高而改善，直至最佳点，超过该点后表现下降。比赛中她的唤醒水平可能过高，导致肌肉紧张和平衡木上精细动作控制丧失。
Cognitive anxiety, seen in her negative thoughts, also reduces confidence and narrows attention. She may focus on falling rather than on the routine, increasing the chance of error. Two suitable techniques are mental rehearsal and controlled breathing.
认知焦虑体现在消极想法上，也会降低自信心并缩小注意力范围。她可能专注于掉下器械而不是动作本身，从而增加失误可能。两种适合的技巧是心理演练和呼吸控制。
Mental rehearsal involves the gymnast imagining herself performing the beam routine perfectly, including the feel of each movement. This builds self-efficacy and creates a positive mental blueprint. Controlled breathing, such as slow inhalation for four seconds and exhalation for six seconds, reduces heart rate and muscle tension, helping her to lower arousal to an optimal level.
心理演练是让运动员想象自己完美完成平衡木套路，包括每个动作的身体感觉。这能建立自我效能感并形成积极的心理蓝图。呼吸控制如吸气 4 秒、呼气 6 秒，可降低心率和肌肉紧张，帮助她把唤醒水平调整到最佳状态。
A common mistake is to say arousal should be as low as possible. In gymnastics, some arousal is needed for alertness and precision; the target is moderate arousal, not zero arousal.
常见错误是认为唤醒水平越低越好。体操中需要一定唤醒保持警觉和动作精确；目标是中等唤醒，而不是零唤醒。
8. Case 7: Health-Related Fitness Testing and Data Analysis | 案例七：健康相关体适能测试与数据分析
Case: A student records the following data: Multi-stage fitness test 9.2, sit-and-reach 14 cm, handgrip strength 28 kg, body mass index 29.5. Interpret each result for a 15-year-old male and justify a six-week training plan based on two priority areas.
案例：一名学生记录了以下数据：多阶段体能测试 9.2，坐位体前屈 14 cm，握力 28 kg，体重指数 29.5。请对一名 15 岁男生的每项结果进行解读，并基于两个优先领域制定六周训练计划并说明理由。
The multi-stage fitness test score of 9.2 indicates average cardiovascular endurance for this age group, but there is room for improvement. The sit-and-reach score of 14 cm suggests below-average flexibility. Handgrip strength of 28 kg is slightly below the typical range for a 15-year-old male. A BMI of 29.5 places him in the overweight category.
多阶段体能测试 9.2 分表明该年龄段心血管耐力处于平均水平，但仍有提升空间。坐位体前屈 14 cm 说明柔韧性低于平均水平。握力 28 kg 略低于 15 岁男生的典型范围。体重指数 29.5 属于超重类别。
The two priority areas should be cardiovascular endurance and body composition, because they are closely linked and carry the greatest health risk. Flexibility and strength can be maintained but are less urgent. A six-week plan should include aerobic exercise at moderate to vigorous intensity on five days per week, such as brisk walking, cycling or swimming for 30–45 minutes.
两个优先领域应是心血管耐力和身体成分，因为它们密切相关且健康风险最大。柔韧性和力量可以保持但没那么紧急。六周计划应包括每周五天中等至高强度的有氧运动，如快走、骑车或游泳 30–45 分钟。
Dietary changes should support training: reduce sugary drinks and high-fat snacks, increase vegetables and whole grains, and control portion sizes. The target is a gradual loss of 0.5–1 kg per week. Re-testing after six weeks could show an improved multi-stage fitness test score and a BMI moving closer to 24.9 or below.
饮食调整应配合训练：减少含糖饮料和高脂零食，增加蔬菜和全谷物，控制每餐份量。目标是每周减重 0.5–1 kg。六周后重新测试可能显示多阶段体能测试分数提高，BMI 向 24.9 或更低靠近。
When interpreting fitness data, always compare against normative tables for age and sex. Do not say a result is good or bad without evidence from the case or standard reference values.
解读体适能数据时，一定要与年龄和性别的常模表进行比较。不要在缺乏案例证据或标准参考值的情况下直接说某个结果好或坏。
9. Case 8: Ethical Issues: Doping and Gamesmanship in Athletics | 案例八：伦理问题：田径中的兴奋剂与违规战术
Case: An 800 m runner is offered a banned substance to improve her recovery before a national trial. She refuses, but another athlete uses gamesmanship by deliberately slowing the pace to disrupt her rhythm. Discuss the ethical issues in both situations.
案例：一名 800 米运动员在全国选拔赛前被提供一种禁用药物以促进恢复。她拒绝了，但另一名运动员使用违规战术，故意放慢配速打乱她的节奏。请讨论这两种情境中的伦理问题。
Taking a banned substance is doping, which is both unethical and illegal in sport. It breaks the spirit of fair play, gives an artificial advantage, and risks serious health harms such as heart problems, hormonal imbalance and psychological dependence. Athletes are responsible for what enters their body under the principle of strict liability.
使用禁用药物属于兴奋剂行为，在体育中既不道德也不合法。它违背公平竞争精神，带来人为优势，并可能造成严重健康危害，如心脏问题、激素紊乱和心理依赖。根据严格责任原则，运动员对自己体内的物质负有责任。
Gamesmanship is the use of tactics that push the rules to the limit without necessarily breaking them. Slowing the pace to disrupt another runner may be within the rules but contradicts the spirit of fair play. It can be seen as unethical because it aims to gain advantage by manipulation rather than superior performance.
违规战术是指把规则推到极限但不一定违反规则的战术。故意放慢配速打乱另一名跑者可能不违反规则，但违背公平竞争精神。这种行为的伦理问题在于它试图通过操控而非更出色的表现来获得优势。
In a 12-mark discussion, you should compare doping and gamesmanship. Doping is clearly banned and has severe sanctions, while gamesmanship is harder to regulate because it depends on interpretation of intent. Both can damage the integrity of sport and the trust between competitors.
在 12 分的讨论题中，你应比较兴奋剂和违规战术。兴奋剂是明确禁止的，处罚严厉；而违规战术更难监管，因为它取决于对意图的判定。两者都会损害体育诚信和运动员之间的信任。
Use ethical terms accurately: sportsmanship means following the rules and respecting opponents; gamesmanship means bending the rules; doping means breaking anti-doping rules. Examiners award marks for making these distinctions clear.
要准确使用伦理术语：体育精神是遵守规则并尊重对手；违规战术是钻规则空子；兴奋剂是违反反兴奋剂规则。考官会给清晰区分这些概念的答案加分。
10. Exam Answer Template and Common Pitfalls | 考试答题模板与常见误区
Use this three-step template for any case study question. Step 1: State the relevant theory or principle in one sentence. Step 2: Apply it using details from the case, such as the athlete’s sport, data or symptoms. Step 3: Explain the consequence or recommendation, linking back to the question.
任何案例分析题都可使用三步模板。第一步：用一句话陈述相关理论或原理。第二步：利用案例中的细节，如运动员的项目、数据或症状，进行应用。第三步：解释结果或建议，并回扣题目。
For example, if the question asks why a sprinter fatigues in the final 20 m, write: ‘The sprinter relies heavily on the ATP-PC system for the first 5 seconds. After that, anaerobic glycolysis takes over, producing lactic acid. This lowers muscle pH, so the sprinter’s contractions weaken in the final 20 m.’ This shows explanation, not description.
例如，如果问题问为什么短跑运动员最后 20 米疲劳，应写：’短跑运动员前 5 秒主要依靠 ATP-PC 系统。之后无氧糖酵解接管，产生乳酸。这会降低肌肉 pH 值，所以最后 20 米收缩力减弱。’ 这展示的是解释，而不是单纯描述。
Common pitfalls include: missing the command word, writing everything you know about a topic without linking to the case, using vague words like ‘fitness’ instead of named components, and ignoring the mark allocation. A 2-mark question needs one clear point and one development, not a full essay.
常见误区包括：忽略指令词、把某个主题知道的所有内容都写下来却不联系案例、使用’体适能’等模糊词汇而不写出具体组成、忽视分值。2 分的题目需要一条清晰观点和一处展开，而不是一整篇文章。
Finally, revise the command words carefully. ‘Describe’ asks for what happens; ‘explain’ asks for why it happens; ‘evaluate’ asks for strengths, weaknesses and a judgement; ‘justify’ asks for reasons supporting a choice. These words determine the structure of your answer.
最后，仔细复习指令词。’描述’要求写出发生什么；’解释’要求写出为什么发生；’评价’要求写出优点、缺点并作出判断；’论证’要求写出支持某一选择的理由。这些词决定了你的答案结构。
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