CIE PE Year 12 Case Study Practical Drill | CIE 体育 Year 12 案例分析实战演练

📚 CIE PE Year 12 Case Study Practical Drill | CIE 体育 Year 12 案例分析实战演练

Case study analysis is a cornerstone of the CIE A-Level Physical Education syllabus, requiring students to apply theoretical knowledge to real-world sporting scenarios. This practical drill walks you through a complete case study of a distance runner, demonstrating how to integrate concepts from anatomy, physiology, psychology, and training methodology to solve performance problems and plan an effective training programme.

案例分析是 CIE A-Level 体育课程的核心，要求学生将理论知识应用于真实的运动情境。本次实战演练带你完整分析一个长跑运动员的案例，展示如何综合运用解剖学、生理学、心理学和训练方法学知识，解决运动表现问题并制定有效的训练计划。

1. Introduction to the Case Study | 案例介绍

James is an 18-year-old male 10,000 m runner aiming to break the 40‑minute barrier. His current personal best is 42:00, set three months ago. He trains five days a week but has plateaued recently. A performance assessment reveals a VO₂max of 58 ml/kg/min, a lactate threshold at 15 km/h, and poor running economy (200 ml/kg/km). He reports feeling anxious before races and struggles with pacing in the final third. Your task is to design a 12‑week intervention that targets his physiological and psychological weaknesses.

詹姆斯是一名 18 岁男子 10,000 米跑运动员，目标是突破 40 分钟大关。他目前个人最好成绩是 42 分整，三个月前创造。他每周训练五天，但近期成绩停滞。运动表现评估显示，他的最大摄氧量（VO₂max）为 58 ml/kg/min，乳酸阈速度为 15 km/h，跑步经济性较差（200 ml/kg/km）。他还报告赛前感到焦虑，最后三分之一赛段节奏控制不佳。你的任务是为其设计一项为期 12 周的干预方案，针对他的生理与心理弱点。

2. Athlete Profile & Demands of the Sport | 运动员概况与运动需求

To prescribe an appropriate training plan, we must first analyse the demands of 10 km racing. The event is primarily aerobic, requiring a high percentage of VO₂max (85–95%) sustained for about 40 minutes. It depends on efficient oxygen delivery, high lactate clearance, and excellent running economy. James’s current VO₂max is moderate for elite standards but may be a limiting factor; however, his high lactate threshold speed (15 km/h) is promising. His main weaknesses are the drop‑off in economy and mental fragility under fatigue.

要制定合适的训练计划，我们必须先分析 10 公里比赛的需求。该项目以有氧供能为主，需要在约 40 分钟内维持 85%–95% 最大摄氧量的强度。它依赖于高效的氧气输送、强大的乳酸清除能力以及出色的跑步经济性。詹姆斯的当前 VO₂max 相对优秀标准仅属中等，可能是一个限制因素；但他较高的乳酸阈速度（15 km/h）颇具前景。他的主要弱点是跑步经济性下降及疲劳状态下的心理脆弱。

Running economy is expressed as the oxygen cost per kilometre per kilogram of body mass. Improving economy can lower energy expenditure by 3–5%, which could translate to a 1–2 minute improvement over 10 km. Psychological demands include sustained motivation, arousal control, and ability to tolerate discomfort during the final kilometres. Thus, our case study must address physiology, mechanics, and mental skills simultaneously.

跑步经济性通常表示为每公斤体重每公里耗氧量。改善经济性可降低能量消耗 3%–5%，这相当于 10 公里成绩提升 1–2 分钟。心理需求包括持续动机、唤醒水平控制以及最后几公里忍受不适的能力。因此，我们的案例必须同时解决生理、力学和心理技能问题。

3. Energy Systems Analysis | 供能系统分析

A 10 km race relies heavily on the aerobic system, with approximately 90–95% of ATP resynthesis coming from oxidative phosphorylation. At the start and during a finishing surge, the anaerobic glycolytic system provides supplemental energy, leading to lactate accumulation. James’s lactate threshold at 15 km/h suggests he can clear lactate effectively at speeds up to that intensity. However, his race pace (around 14.3 km/h if aiming for 42 min) is slightly below threshold, indicating that if he can raise his threshold to 15.5 km/h, he could sustain a faster race speed and still maintain a steady‑state lactate level.

10 公里跑主要依赖有氧系统，约 90%–95% 的 ATP 再合成来自氧化磷酸化。在起跑和冲刺阶段，无氧糖酵解系统提供额外能量，导致乳酸积累。詹姆斯 15 km/h 的乳酸阈表明他能够在达到该强度的速度下有效清除乳酸。然而，若以 42 分钟为目标，他的比赛配速约为 14.3 km/h，略低于阈值，这意味着如果他能将阈值提升至 15.5 km/h，就能以更快的比赛速度维持稳态乳酸水平。

Key adaptations from training should target mitochondrial density, capillary density, and oxidative enzyme activity to enhance aerobic capacity. Interval training at 90–100% VO₂max will stimulate central adaptations (stroke volume, cardiac output) and local oxidative capacity. Lactate threshold runs (tempo runs) at 80–90% of maximum heart rate will specifically shift the lactate‑speed curve to the right. The target is to increase VO₂max to 62 ml/kg/min and lactate threshold speed to 16 km/h over 12 weeks.

训练的重点适应应针对线粒体密度、毛细血管密度和氧化酶活性，以提升有氧能力。以 90%–100% VO₂max 进行的间歇训练将刺激中枢性适应（每搏输出量、心输出量）和局部氧化能力。以 80%–90% 最大心率进行的乳酸阈跑（节奏跑）将专门使乳酸-速度曲线向右移动。目标是 12 周内将 VO₂max 提升至 62 ml/kg/min，乳酸阈速度提升至 16 km/h。

4. Training Programme Design | 训练计划设计

The 12‑week macrocycle is divided into mesocycles, each with a distinct focus. A sample weekly pattern incorporates a mixture of continuous, tempo, interval, and recovery sessions. Below is a summary of the mesocycle structure:

12 周的大周期被划分为若干中周期，各具明确重点。一个典型的周训练模式包括持续跑、节奏跑、间歇跑和恢复跑的组合。以下是中周期结构概览：