Circuit, Weight and Plyometric Training

This lesson covers circuit training, weight training, and plyometric training as required by the OCR GCSE PE specification (J587). In the OCR specification, these three methods are treated as sub-types of interval training because they all involve periods of work alternating with periods of rest. Understanding how each method works, what it targets, and how to apply it to different sports is essential for Paper 1.

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Circuit Training

Definition: A form of training that involves performing a series of exercises (stations) in succession, with rest periods between each station or after completing the full circuit.

Key Features

Feature	Detail
Structure	A series of 6–12 stations arranged in a circuit
Work at each station	Typically 30–60 seconds or a set number of repetitions
Rest between stations	Typically 15–60 seconds
Rest between circuits	2–3 minutes
Number of circuits	Usually 2–4 depending on fitness level
Muscle groups	Stations are arranged so that consecutive exercises target different muscle groups to allow partial recovery

How a Circuit Is Designed

The principle of alternating muscle groups is fundamental:

graph TD
    A["Station 1<br>Press-ups<br>(upper body)"] --> B["Station 2<br>Squat jumps<br>(lower body)"]
    B --> C["Station 3<br>Sit-ups<br>(core)"]
    C --> D["Station 4<br>Lunges<br>(lower body)"]
    D --> E["Station 5<br>Tricep dips<br>(upper body)"]
    E --> F["Station 6<br>Burpees<br>(full body)"]
    F --> G["Rest 2-3 min<br>then repeat"]

    style A fill:#e74c3c,color:#fff
    style B fill:#2980b9,color:#fff
    style C fill:#f39c12,color:#fff
    style D fill:#2980b9,color:#fff
    style E fill:#e74c3c,color:#fff
    style F fill:#8e44ad,color:#fff
    style G fill:#27ae60,color:#fff

Sport-Specific Circuits

Circuits can be adapted to include sport-specific exercises:

Sport	Example Stations
Football	Dribbling through cones, heading a ball, passing against a wall, shuttle runs, sit-ups, squat jumps
Netball	Chest passes, footwork drills, ladder agility, sit-ups, squats, reaction ball catches
Swimming	Tricep dips, lat pull-downs, flutter kicks, core rotations, squat jumps, resistance band pulls

Advantages and Disadvantages

Advantages	Disadvantages
Very adaptable — stations can be changed to target any sport or fitness component	Requires equipment and space for multiple stations
Addresses tedium — the variety of exercises keeps the session interesting	Can be time-consuming to set up
Can improve multiple components of fitness in one session	Intensity may be difficult to monitor precisely at each station
Can be done with bodyweight exercises (no equipment) or with equipment	Requires good technique at every station to avoid injury
Suitable for group training — multiple people can work the circuit simultaneously	Performers may rush through stations and sacrifice technique

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Weight Training

Definition: A training method that uses resistance (free weights or machines) to improve muscular strength, muscular endurance, or power.

Key Features

Feature	Detail
Equipment	Barbells, dumbbells, kettlebells, weight machines, resistance bands
Structure	Exercises organised into sets and repetitions (e.g. 3 sets of 10 reps)
Rest between sets	Varies depending on the training goal (see below)
Muscles targeted	Specific exercises target specific muscle groups

How to Adjust Weight Training for Different Goals

Goal	Weight (% of 1RM)	Repetitions	Sets	Rest Between Sets
Maximal strength	85–100%	1–5	3–5	3–5 minutes
Muscular endurance	50–70%	12–20+	2–4	30–60 seconds
Power	70–85%	6–10 (performed explosively)	3–5	2–3 minutes
Hypertrophy (muscle size)	70–85%	8–12	3–5	60–90 seconds

Exam Tip: OCR frequently asks you to explain how a performer would adjust their weight training to develop a specific fitness component. Always state the percentage of 1RM, the number of reps and sets, and the rest period. This structured answer is exactly what the mark scheme requires.

Common Weight Training Exercises

Exercise	Primary Muscles Targeted	Sporting Application
Bench press	Pectorals, triceps, anterior deltoids	Power in a rugby tackle
Squat	Quadriceps, gluteals, hamstrings	Driving out of a sprint start
Deadlift	Hamstrings, gluteals, erector spinae	Rowing stroke power
Bicep curl	Biceps	Pulling actions in climbing
Shoulder press	Deltoids, triceps	Overhead actions in volleyball
Lat pull-down	Latissimus dorsi, biceps	Swimming pull phase

Advantages and Disadvantages

Advantages	Disadvantages
Highly specific — individual muscle groups can be isolated and trained	Requires equipment (gym access or home equipment)
Easily measurable — weight, reps, and sets can be precisely tracked	Risk of injury if technique is poor or weights are too heavy
Can be adapted for any goal (strength, endurance, power)	Requires knowledge of correct technique
Progressive overload is straightforward — simply increase the weight	Can be boring if the same routine is repeated without variation
Suitable for rehabilitation after injury (controlled movements)	Not directly aerobic — does not improve cardiovascular endurance unless incorporated into circuits

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Plyometric Training

Definition: A training method that involves explosive jumping, bounding, and hopping movements to develop power (explosive strength).

How Plyometrics Work

Plyometric exercises use the stretch-shortening cycle of muscles:

1. Eccentric phase (loading) — the muscle lengthens under tension (e.g. the quadriceps stretch as you land from a jump).
2. Amortisation phase (transition) — the brief moment between landing and taking off again. This should be as short as possible.
3. Concentric phase (contraction) — the muscle shortens explosively to produce force (e.g. the quadriceps contract to drive you upward in the next jump).

graph LR
    A["Eccentric Phase<br>(muscle lengthens)"] --> B["Amortisation Phase<br>(brief transition)"]
    B --> C["Concentric Phase<br>(explosive contraction)"]

    style A fill:#e74c3c,color:#fff
    style B fill:#f39c12,color:#fff
    style C fill:#27ae60,color:#fff

The key principle is that a muscle that is pre-stretched (eccentrically loaded) can produce a greater concentric force than one that is not. By minimising the amortisation phase, the stored elastic energy is used to generate maximum power.

Examples of Plyometric Exercises

Exercise	Description	Muscles Targeted
Box jumps	Jump onto a raised platform and step down; repeat	Quadriceps, gluteals, calves
Depth jumps	Step off a box, land, and immediately jump as high as possible	Quadriceps, gluteals, calves
Bounding	Exaggerated running strides with maximum height and distance per stride	Quadriceps, hamstrings, gluteals
Clap press-ups	Press-up with enough force to clap hands in the air between reps	Pectorals, triceps, deltoids
Tuck jumps	Jump vertically, bringing knees to chest at the peak	Quadriceps, hip flexors, calves
Lateral bounds	Jump sideways from one foot to the other	Adductors, abductors, quadriceps

Advantages and Disadvantages

Advantages	Disadvantages
Develops explosive power more effectively than most other methods	High impact — significant risk of injury to joints, ligaments, and tendons
Highly sport-specific for jumping, sprinting, and throwing sports	Not suitable for beginners or those with pre-existing joint problems
Can be done with minimal equipment	Requires a high base level of strength before starting
Improves speed of muscle contraction	Demands adequate recovery (48–72 hours between sessions)
Directly transfers to sporting performance (vertical jump in basketball, sprint start in athletics)	Technique must be correct — poor landing mechanics increase injury risk significantly

Sports Best Suited to Plyometric Training

Sport	Application
Basketball	Improving vertical jump for rebounds and layups
Volleyball	Increasing jump height for spiking and blocking
Sprinting	Developing explosive drive from the blocks and powerful stride
High jump	Maximising take-off power
Football	Heading ability and sprint acceleration

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Comparing Circuit, Weight and Plyometric Training