Case Study Practical Exercises for Year 13 WJEC PE | 案例分析实战演练

📚 Case Study Practical Exercises for Year 13 WJEC PE | 案例分析实战演练

This article walks you through a detailed, multi-dimensional case study of a 1500-metre athlete preparing for a national championship. By examining physiological, psychological, biomechanical, nutritional, technological, and socio-cultural factors, you will learn how to structure high-mark answers in your WJEC A2 PE exam. Use this walkthrough to sharpen your analysis and evaluation skills.

本文将带你深入剖析一名1500米运动员备战全国锦标赛的多维度案例。通过综合运用生理学、心理学、生物力学、营养学、科技和社会文化等知识，你将学会如何在WJEC A2体育考试中构建高分答案。请跟随这个实战演练，提升你的分析与评价能力。

1. Case Overview | 案例概述

Emily is a 19-year-old middle-distance runner specialising in the 1500 m. She has a personal best of 4 min 22 s but has recently experienced a performance plateau, constant fatigue, and declining motivation. Her coach has proposed a 4-week altitude training camp at 2500 m, followed by a 3-week taper before the national championships. Emily is concerned about injury risk, dietary adequacy, and mental burnout.

Emily是一名19岁的中距离跑专项运动员，主攻1500米，个人最好成绩4分22秒。近期她出现成绩停滞、持续疲劳和动机下降。教练建议进行为期4周的海拔2500米高原训练，随后经过3周赛前减量再参加全国锦标赛。Emily担心受伤风险、饮食充足性和心理倦怠。

Your task is to evaluate Emily’s situation, identify potential problems, and justify a holistic strategy based on WJEC PE theory. | 你的任务是评估Emily的状况，找出潜在问题，并依据WJEC体育理论提出一个整体策略并加以论证。

2. Physiological Analysis | 生理学分析

At 2500 m, the partial pressure of oxygen is reduced, leading to a decrease in arterial O₂ saturation. This hypoxic stimulus triggers the kidneys to release erythropoietin (EPO), which stimulates red blood cell production. After 3–4 weeks, total haemoglobin mass can increase by 6–8%, enhancing O₂-carrying capacity on return to sea level.

在2500米海拔，氧分压降低，导致动脉血氧饱和度下降。这种低氧刺激促使肾脏释放促红细胞生成素(EPO)，从而刺激红细胞生成。3–4周后，血红蛋白总量可增加6–8%，使回到平原后的血液携氧能力增强。

However, training intensity must be reduced initially because VO₂ max declines by approximately 1% for every 100 m above 1500 m. Emily’s usual 1500 m race pace may be unsustainable, risking overreaching if not carefully managed.

然而，训练强度起初必须下调，因为海拔每上升100米（超过1500米后），最大摄氧量(VO₂ max)约下降1%。Emily常规的1500米配速可能难以维持，若管理不当会面临过度训练风险。

We can monitor adaptation through resting heart rate, lactate profile at submaximal speeds, and haemoglobin mass via CO rebreathing. Expected positive adaptations include improved lactate clearance and buffering capacity, crucial for the final 300 m of a 1500 m race.

我们可以通过静息心率、次最大速度下的乳酸曲线和CO再呼吸法测定的血红蛋白量来监测适应情况。预期的积极适应包括乳酸清除率和缓冲能力的提升，这对1500米比赛最后300米至关重要。

3. Psychological Analysis | 心理学分析

Emily’s declining motivation suggests signs of staleness and possible burnout. According to the Catastrophe Model, her high cognitive anxiety combined with declining physiological arousal could lead to a sudden drop in performance. We can use the Competitive State Anxiety Inventory-2 (CSAI-2) to distinguish cognitive and somatic anxiety levels.

Emily的动机下降提示可能出现了厌倦和倦怠迹象。根据突变模型，她的高认知焦虑加上生理唤醒的下降可能导致成绩突然崩溃。我们可以使用竞赛状态焦虑问卷-2(CSAI-2)来区分认知焦虑和躯体焦虑水平。

Setting process goals (e.g. ‘hold target pace for first 800 m’) and short-term goals for each altitude week will enhance self-efficacy. Using imagery of a controlled final kick can mentally rehearse the critical portion of the race without physical fatigue.

设定过程目标（如“在前800米保持目标配速”）以及为高原训练每周设定短期目标，会增强自我效能感。使用表象训练想象最后的加速冲刺，可以在没有身体疲劳的情况下对关键赛段进行心理预演。

4. Biomechanical Analysis | 生物力学分析

Efficiency in middle-distance running is partly determined by stride length and stride frequency. Using slow-motion video analysis, we can measure Emily’s ground contact time. A contact time of 180–200 ms at race pace is typical; anything longer might indicate over-striding and braking forces.

中距离跑的经济性部分取决于步长与步频。通过慢动作视频分析，我们可以测量Emily的触地时间。比赛配速下180–200毫秒的触地时间较为理想；若更长则可能意味着步幅过大和制动力增加。

We can apply Newton’s third law to optimise vertical ground reaction force: a quick, pawing action just behind the centre of mass minimises horizontal deceleration. Core stability is also essential to maintain hip alignment and prevent energy leaks through lateral trunk sway.

我们可以运用牛顿第三定律来优化垂直地面反作用力：在重心略后方快速的“扒地”动作可以最大限度减少水平减速度。核心稳定性对于保持髋关节对位、防止躯干侧摆造成的能量损失也至关重要。

5. Nutritional Strategies | 营养策略

At altitude, basal metabolic rate can increase by 6–10% due to increased ventilation and sympathetic activity. Emily should increase energy intake, particularly carbohydrate, to prevent muscle protein breakdown. A target of 8–10 g·kg⁻¹·day⁻¹ of carbohydrate during heavy training blocks is recommended.

在高原，由于通气量增加和交感神经活动增强，基础代谢率可提高6–10%。Emily应增加能量摄入，尤其碳水化合物，以防止肌肉蛋白分解。大负荷训练阶段建议每天摄入8–10克/千克体重的碳水化合物。

Iron status is critical because of enhanced erythropoiesis. A serum ferritin level below 30 ng·mL⁻¹ warrants supplementation. Additionally, combining iron-rich foods with vitamin C (e.g. orange juice with spinach) improves non-haem iron absorption.

铁状态至关重要，因为红细胞生成增强。血清铁蛋白低于30 ng/mL就需要补充。此外，将富铁食物与维生素C搭配（如在菠菜中加入橙汁）可以提高非血红素铁的吸收。

6. Training Programme Design | 训练计划设计

A periodised approach is essential. The 4-week altitude block (mesocycle) can be split into: Week 1 – acclimatisation (70% of sea-level volume, RPE 13–14); Weeks 2–3 – overload (80–90% volume, introducing hill reps); Week 4 – recovery and tapering. Returning to sea level, a 21-day peaking strategy can utilise the improved oxygen delivery.

周期性训练至关重要。4周高原中周期可划分为：第1周 – 适应（平原跑量的70%，自觉疲劳等级RPE 13–14）；第2–3周 – 超量负荷（80–90%跑量，加入坡度重复跑）；第4周 – 恢复与减量。回到平原后，一个21天峰值计划可充分利用提升的携氧能力。

Training intensity should be guided by pacing zones: Zone 1 (easy, < 60% VO₂ max), Zone 2 (tempo, 60–75%), Zone 3 (threshold, 75–85%), and Zone 4 (racing, > 95%). At altitude, sessions above Zone 3 are limited to short intervals to avoid excessive hypoxaemia.

训练强度应以配速区间为指导：区间1（轻松，<60%VO₂ max），区间2（节奏跑，60–75%），区间3（阈强度，75–85%），区间4（比赛强度，>95%）。在高原，高于区间3的训练仅限于短间歇，以避免过度低氧血症。

7. Injury Prevention and Management | 伤病预防与管理

Increased training load at altitude can precipitate medial tibial stress syndrome (shin splints) or Achilles tendinopathy. A pre-training movement screen, such as the Functional Movement Screen (FMS), can identify asymmetries. Eccentric heel drops and calf raises strengthen the lower limb’s shock-absorption capacity.

高原训练负荷增加可能诱发胫骨内侧应力综合征（外胫夹）或跟腱病变。训练前的功能性动作筛查(FMS)可发现动作不对称。离心提踵和跖屈肌群力量训练可增强下肢缓冲能力。

Sleep quality often deteriorates at altitude due to periodic breathing. We can use sleep hygiene strategies: cool room, eye mask, and avoiding blue light 60 min before bed. Adequate sleep is vital for tissue repair and growth hormone secretion.

高原常因周期性呼吸导致睡眠质量下降。我们可以采用睡眠卫生策略：保持凉爽室温、使用眼罩、睡前60分钟避免蓝光。充足睡眠对组织修复和生长激素分泌至关重要。

8. Technology and Data Analysis | 科技与数据分析

Wearable GPS and heart rate variability (HRV) can monitor Emily’s training load and recovery. A resting HRV value trending downward over several days indicates accumulating fatigue. The acute:chronic workload ratio (e.g. rolling 7-day load ÷ rolling 28-day load) should ideally stay between 0.8 and 1.3 to minimise injury risk.

可穿戴GPS和心率变异性(HRV)技术能监测Emily的训练负荷与恢复。静息HRV数值连续数日下降提示疲劳累积。急慢性负荷比（例如滚动7天负荷÷滚动28天负荷）理想范围应保持在0.8至1.3之间，以最小化受伤风险。

Lactate testing at submaximal paces can quantify the rightward shift of the lactate curve post-altitude, indicating improved endurance. We can also measure running economy via oxygen cost at a fixed speed (e.g. 15 km·h⁻¹) in a lab.

次最大速度的乳酸测试可以量化高原后乳酸曲线右移，表明耐力改善。我们还可以在实验室通过固定速度（如15 km/h）下的氧气消耗来测量跑步经济性。

9. Ethical and Socio-Cultural Factors | 道德与社会文化因素

Altitude training is legal and widespread, but questions arise if using an altitude tent at home, which some argue creates inequality due to cost (up to £3000). Emily’s limited budget might put her at a disadvantage compared to funded athletes. This links to the socio-cultural concept of ‘stacked’ inequalities in access to technology.

高原训练是合法且普遍的，但如果在家使用高原帐篷，则可能引发争议，有人认为其高昂成本（高达3000英镑）造成了不平等。Emily有限的预算可能使她与受资助运动员相比处于劣势。这与社会文化中获取科技资源的不平等现象相呼应。

Additionally, the pressure to succeed may push athletes toward doping. Emily must be educated on the WADA Prohibited List, especially regarding glucocorticoids or masking agents. Ethical decision-making frameworks (e.g. deontological perspective) can reinforce clean sport values.

此外，成功压力可能驱使运动员走向兴奋剂。必须让Emily了解世界反兴奋剂机构(WADA)禁用清单，特别是关于糖皮质激素和掩蔽剂。伦理决策框架（如义务论视角）可以强化纯洁体育的价值观。

10. Evaluation and Reflection | 评价与反思

In a WJEC exam, you would be expected to weigh up the evidence and make a justified conclusion. For Emily, the physiological benefits of altitude training (↑ Hb mass, ↑ VO₂ max) are likely to outweigh the risks if the taper is well-managed and nutritional strategies are optimised. However, psychological readiness must be prioritised concurrently.

在WJEC考试中，你需要权衡证据并给出有理由的结论。对Emily而言，如果减量期管理得当、营养策略优化，高原训练的生理益处（血红蛋白量增加、VO₂ max提高）很可能超过风险。但必须同时优先考虑心理准备。

A holistic, athlete-centred approach that reviews all four factors (physiological, psychological, biomechanical, socio-cultural) will not only enhance performance but also protect the athlete’s long-term health and wellbeing. Remember to link every point explicitly to the case details.

一个以运动员为中心、综合审视四大因素（生理、心理、生物力学、社会文化）的整体方法，不仅能提升成绩，还能保护运动员的长期健康和福祉。请记住，每个论点都要明确结合案例细节。

Published by TutorHao | PE Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）

Case Study Practical Exercises for Year 13 WJEC PE | 案例分析实战演练