CCEA GCSE Physical Education: Core Knowledge Review | CCEA GCSE 体育：核心知识点梳理

📚 CCEA GCSE Physical Education: Core Knowledge Review | CCEA GCSE 体育：核心知识点梳理

Welcome to this Year 11 CCEA GCSE Physical Education revision guide. It condenses the essential content of the CCEA specification into clear bilingual explanations, covering the skeletal and muscular systems, the respiratory and cardiovascular systems, components of fitness, principles and methods of training, fitness testing, sports psychology, health and lifestyle factors, and the data-handling skills examiners expect to see.

欢迎阅读这份 Year 11 CCEA GCSE 体育复习指南。本文依据 CCEA 考试大纲，把核心内容整理为清晰的双语讲解，涵盖骨骼与肌肉系统、呼吸与心血管系统、体能组成、训练原则与训练方法、体能测试、运动心理学、健康与生活方式因素，以及考官期望看到的数据处理技能。

1. Skeletal System and Joint Actions | 骨骼系统与关节动作

The skeleton performs five key functions that underpin every sporting action: support, because the framework of bones holds the body upright; protection, because the cranium shields the brain and the ribs and sternum shield the heart and lungs; movement, because bones act as levers that muscles pull on; mineral storage, mainly calcium and phosphorus; and blood cell production, since red and white blood cells are manufactured in bone marrow.

骨骼具有五大关键功能，支撑着每一个运动动作：支撑功能，因为骨构成的支架使身体保持直立；保护功能，因为颅骨保护大脑，肋骨与胸骨保护心脏和肺；运动功能，因为骨作为杠杆被肌肉牵拉；矿物质储存功能，主要储存钙和磷；以及造血功能，因为红细胞和白细胞在骨髓中生成。

Bones meet at joints, which are classified as fibrous, cartilaginous or synovial. Fibrous joints are fixed and immovable, such as the sutures of the skull. Cartilaginous joints are slightly movable, such as the joints between the vertebrae, where cartilage acts as a shock absorber. Synovial joints are freely movable and are the most important joint type in sport because they allow a wide range of movement.

骨与骨相接形成关节，关节分为纤维关节、软骨关节和滑膜关节。纤维关节固定不可动，例如颅骨骨缝。软骨关节可轻微活动，例如椎骨之间的关节，软骨在此起缓冲减震作用。滑膜关节可自由活动，是运动中最重要的一类关节，因为它们允许大幅度的动作范围。

A synovial joint contains several key structures. Articular (hyaline) cartilage covers the ends of the bones to reduce friction and absorb shock. The synovial membrane secretes synovial fluid, which lubricates the joint and nourishes the cartilage. The joint capsule surrounds the joint and holds the bones together. Ligaments connect bone to bone and provide stability, while tendons connect muscle to bone and transmit force. Bursae are small fluid-filled sacs that reduce friction where tendons pass over bone.

滑膜关节包含若干关键结构。关节（透明）软骨覆盖骨端，用以减少摩擦并缓冲震荡。滑膜分泌滑液，润滑关节并营养软骨。关节囊包绕关节，把骨连接在一起。韧带连接骨与骨，提供稳定性；肌腱连接肌肉与骨，传递力量。滑囊是充满液体的小囊，可减少肌腱经过骨表面时的摩擦。

The main synovial joint types are hinge joints (elbow, knee, ankle), which allow flexion and extension; ball-and-socket joints (shoulder, hip), which allow movement in all three planes; pivot joints (atlas and axis in the neck), which allow rotation; gliding joints (carpals, tarsals), which allow sliding movements; saddle joints (base of the thumb); and condyloid joints (wrist).

主要的滑膜关节类型包括：铰链关节（肘、膝、踝），允许屈和伸；球窝关节（肩、髋），允许在三个平面上运动；旋转关节（颈椎寰椎与枢椎），允许旋转；滑动关节（腕骨、跗骨），允许滑动动作；鞍状关节（拇指根部）；以及椭圆关节（腕关节）。

Joint movements you must be able to name and apply are flexion (decreasing the angle at a joint, as in the knee during the recovery phase of a sprint), extension (increasing the angle, as in the drive phase at the knee), abduction (moving a limb away from the midline, as in raising the arm sideways), adduction (moving it back towards the midline), rotation (turning a bone around its own axis), circumduction (a full cone-shaped circle, as in a cricket bowling action), plantarflexion (pointing the toes, as at take-off in a jump) and dorsiflexion (pulling the toes up, as when preparing to land).

你必须能够说出并运用以下关节动作：屈（减小关节角度，如短跑恢复阶段膝关节的动作）、伸（增大关节角度，如短跑蹬伸阶段膝关节的动作）、外展（肢体远离身体中线，如手臂侧举）、内收（肢体回到中线）、旋转（骨绕自身轴转动）、环转（完整的锥形圆周运动，如板球投球动作）、跖屈（绷脚尖，如起跳瞬间）和背屈（勾脚尖，如准备落地时）。

2. Muscular System and Muscle Contraction | 肌肉系统与肌肉收缩

Muscles work in antagonistic pairs. The agonist, or prime mover, contracts to produce movement while the antagonist relaxes and lengthens to allow it. At the elbow, the biceps brachii flexes the arm while the triceps brachii extends it. At the knee, the quadriceps extend and the hamstrings flex. At the ankle, the gastrocnemius plantarflexes while the tibialis anterior dorsiflexes.

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肌肉以拮抗肌对的方式工作。主动肌（原动肌）收缩产生动作，而拮抗肌放松并拉长以配合动作。在肘关节，肱二头肌使手臂屈曲，肱三头肌使手臂伸展。在膝关节，股四头肌伸展小腿，腘绳肌屈曲小腿。在踝关节，腓肠肌使足跖屈，胫骨前肌使足背屈。

There are three types of muscle tissue. Skeletal muscle is striated and under voluntary control, and it produces movement and posture. Smooth muscle is found in the walls of internal organs such as the stomach and blood vessels and works involuntarily. Cardiac muscle is found only in the heart wall, is involuntary and is highly fatigue-resistant because it must beat continuously for life.

肌肉组织有三种类型。骨骼肌呈横纹状，受意识控制，产生动作并维持姿势。平滑肌位于胃、血管等内脏器官壁中，不受意识控制地工作。心肌仅存在于心壁，不受意识支配，且极耐疲劳，因为它必须终生持续跳动。

Muscular contraction can be isotonic or isometric. Isotonic contraction involves a change in muscle length: concentric contraction shortens the muscle, as the biceps do during the upward phase of a bicep curl, while eccentric contraction lengthens the muscle under tension, as the biceps do when lowering the weight slowly. Isometric contraction occurs when the muscle generates tension but its length does not change, for example holding a plank or a wall sit.

肌肉收缩可分为等张收缩和等长收缩。等张收缩会改变肌肉长度：向心收缩使肌肉缩短，如肱二头肌弯举的向上阶段；离心收缩使肌肉在张力下被拉长，如缓慢放下哑铃时肱二头肌的动作。等长收缩指肌肉产生张力但长度不变，例如保持平板支撑或靠墙静蹲。

Muscle fibres differ in their contractile and metabolic properties. Type I slow-twitch fibres have a rich blood supply and many mitochondria, contract slowly and resist fatigue, making them suited to endurance events such as marathon running and to postural work. Type IIa fast oxidative glycolytic fibres are moderately fast and moderately fatigue-resistant, suiting middle-distance events such as 800 m. Type IIx fast glycolytic fibres contract very quickly and powerfully but fatigue rapidly, suiting sprinting, jumping and throwing.

肌纤维在收缩与代谢特性上有所不同。I 型慢肌纤维血液供应丰富、线粒体多，收缩速度慢且抗疲劳，适合马拉松等耐力项目和姿势维持。IIa 型快氧化糖酵解纤维速度中等、抗疲劳性中等，适合 800 米等中距离项目。IIx 型快糖酵解纤维收缩极快、力量大，但疲劳迅速，适合短跑、跳跃和投掷。

3. Respiratory System and Gaseous Exchange | 呼吸系统与气体交换

Inhalation is an active process. The diaphragm contracts and flattens, the external intercostal muscles contract to lift the ribs up and out, the volume of the thoracic cavity increases and the pressure inside the lungs falls below atmospheric pressure, so air is drawn in. At rest, exhalation is largely passive: the diaphragm relaxes and moves upwards, the ribs move down and in, thoracic volume decreases, pressure rises above atmospheric pressure and air is forced out.

吸气是主动过程。膈肌收缩并变平，肋间外肌收缩使肋骨上提、外扩，胸腔容积增大，肺内压降至低于大气压，空气因此被吸入。安静状态下，呼气基本是被动的：膈肌放松上移，肋骨下移内收，胸腔容积减小，肺内压高于大气压，空气被排出。

Lung volumes and capacities are important examination content. Tidal volume is the amount of air breathed in or out in one breath at rest, about 500 ml. Inspiratory and expiratory reserve volumes are the extra amounts that can be breathed in or out beyond a normal breath. Vital capacity is the largest volume that can be exhaled after a maximum inhalation. Residual volume, roughly 1 200 ml, is the air that always remains in the lungs and cannot be exhaled.

肺容量与肺活量是重要的考点。潮气量是安静时每次呼吸吸入或呼出的气量，约为 500 毫升。补吸气量和补呼气量是在正常呼吸之外额外能吸入或呼出的气量。肺活量是最大吸气后能呼出的最大气量。余气量约为 1 200 毫升，是始终留在肺内、无法呼出的气体。

Minute ventilation (L·min⁻¹) = tidal volume (L) × breathing rate (breaths·min⁻¹)

每分通气量（升/分钟）= 潮气量（升）× 呼吸频率（次/分钟）

At rest, minute ventilation is around 6 litres per minute; during maximal exercise it can exceed 100 litres per minute because both tidal volume and breathing rate increase. Gaseous exchange takes place at the alveoli. Oxygen diffuses from the alveolar air into the blood in the surrounding capillaries, where the partial pressure of

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