Circuit, Weight and Plyometric Training

This lesson covers three more of the nine training methods required by the Edexcel GCSE PE specification (1PE0): circuit training, weight (resistance) training and plyometric training. For each method, you need to know the definition, how it works, advantages and disadvantages, and which sports and components of fitness it develops.

---

1. Circuit Training

Definition: A form of training involving a series of exercises (stations) arranged in a circuit, performed one after another with minimal rest between stations.

How It Works

A circuit typically consists of 6–10 stations, each targeting a different muscle group or component of fitness. The performer completes each station for a set time (e.g. 30 seconds) or a set number of repetitions, then moves to the next. After completing all stations, the performer has done one circuit. Multiple circuits may be completed with a rest period between each.

Feature	Detail
Number of stations	Usually 6–10
Work time	20–60 seconds per station (or set reps)
Rest between stations	Minimal (10–30 seconds to move to next station)
Rest between circuits	1–3 minutes
Number of circuits	1–3 (or more for advanced performers)

Example Circuit

graph TD
    A["Station 1<br>Press-ups<br>(chest/arms)"] --> B["Station 2<br>Squat jumps<br>(legs/power)"]
    B --> C["Station 3<br>Sit-ups<br>(core)"]
    C --> D["Station 4<br>Shuttle runs<br>(CV endurance)"]
    D --> E["Station 5<br>Tricep dips<br>(arms)"]
    E --> F["Station 6<br>Star jumps<br>(whole body)"]
    F --> G["Station 7<br>Lunges<br>(legs)"]
    G --> H["Station 8<br>Burpees<br>(whole body)"]
    H -->|"Rest 2 min<br>then repeat"| A

    style A fill:#3498db,color:#fff
    style D fill:#e74c3c,color:#fff
    style F fill:#27ae60,color:#fff

Key Design Principles

• Alternate muscle groups — do not place two arm exercises next to each other; this allows recovery while still working.
• Include variety — mix strength, endurance and cardiovascular stations.
• Make it sport-specific — a circuit for a footballer might include dribbling stations, agility runs and shooting.

Advantages and Disadvantages

Advantages	Disadvantages
Very versatile — can target any component of fitness	Requires equipment and space for multiple stations
Can be sport-specific (include relevant exercises)	Technique may suffer due to fatigue
Motivating — varied and social (can work in groups)	Difficult to overload specific muscle groups heavily
Can improve muscular endurance, CV endurance and strength	Planning and setting up takes time
Suitable for all fitness levels (adjust reps/time)	May need a partner or instructor

---

2. Weight (Resistance) Training

Definition: Training using weights (free weights or machines) or resistance to improve strength, muscular endurance or power.

How It Works

The performer lifts or pushes against a resistance (barbells, dumbbells, machines, resistance bands) for a set number of repetitions (reps) grouped into sets. The weight, reps and sets are adjusted depending on the training goal.

Goal	Weight (% of 1RM)	Reps	Sets	Rest Between Sets
Maximal strength	Heavy (80–100% 1RM)	1–5	3–5	3–5 minutes
Muscular endurance	Light-moderate (50–70% 1RM)	12–20	2–3	30–60 seconds
Power	Moderate-heavy (60–80% 1RM)	6–10 (fast)	3–5	2–3 minutes
Hypertrophy (muscle size)	Moderate (70–85% 1RM)	8–12	3–4	60–90 seconds

Key Concepts

• 1RM (one-rep max): The maximum weight a person can lift once with correct technique. Used to calculate training loads.
• Repetitions (reps): The number of times an exercise is performed in succession.
• Sets: A group of consecutive reps. E.g. "3 sets of 10 reps" means 10 reps, rest, 10 reps, rest, 10 reps.
• Progressive overload: Gradually increase the weight, reps or sets over time.

Advantages and Disadvantages

Advantages	Disadvantages
Highly specific — can target individual muscle groups	Requires equipment (weights, machines)
Easy to apply progressive overload (add weight)	Risk of injury if technique is poor
Can develop strength, muscular endurance or power	May need a spotter for safety (especially maximal lifts)
Easy to monitor progress (record weights and reps)	Can be time-consuming
Improves body composition and bone density	Not directly sport-specific unless exercises are chosen carefully

---

3. Plyometric Training

Definition: Training that involves rapid, explosive movements where the muscle is lengthened (eccentric action) immediately before being shortened (concentric action), producing a powerful contraction. This is known as the stretch-shortening cycle.

How It Works

Plyometric exercises involve jumping, bounding and hopping movements. The muscles are pre-stretched (loaded) on landing, then contract powerfully to produce the next jump. This trains the muscles to generate maximum force in the shortest time — developing explosive power.

Feature	Detail
Intensity	High to very high
Exercises	Box jumps, depth jumps, bounding, clap press-ups, hurdle hops
Key principle	Stretch-shortening cycle (eccentric → concentric)
Components developed	Power (explosive strength), speed, muscular strength

The Stretch-Shortening Cycle

graph LR
    A["Landing/loading<br>(eccentric phase:<br>muscle lengthens)"] --> B["Amortisation phase<br>(brief transition:<br>muscle at maximum<br>stretch)"] --> C["Take-off/explosion<br>(concentric phase:<br>muscle shortens<br>powerfully)"]

    style A fill:#3498db,color:#fff
    style B fill:#f39c12,color:#fff
    style C fill:#e74c3c,color:#fff

Example Exercises

Exercise	Description	Sporting Application
Box jumps	Jump onto a raised platform and step back down	Basketball (rebounding), volleyball (spiking)
Depth jumps	Step off a box, land, and immediately jump as high as possible	High jump, triple jump
Bounding	Exaggerated running strides covering maximum distance per stride	Sprinting, long jump
Clap press-ups	Push up explosively so hands leave the ground, clap, and land	Boxing, rugby (upper-body power)
Hurdle hops	Jump over a series of low hurdles in succession	Sprinting, hurdling

Advantages and Disadvantages

Advantages	Disadvantages
Excellent for developing explosive power	Very high impact — risk of injury (especially joints)
Improves speed of muscle contraction	Not suitable for beginners or those with joint problems
Sport-specific for explosive sports	Requires a high base level of strength and fitness
Relatively little equipment needed	Causes significant muscle soreness (delayed onset)
Develops fast-twitch muscle fibres	Must be performed on a suitable surface (not concrete)

Exam Tip: Edexcel may ask you to explain the stretch-shortening cycle. Remember the three phases: (1) eccentric (muscle lengthens on landing), (2) amortisation (brief transition at maximum stretch) and (3) concentric (muscle shortens powerfully for take-off).

---

Comparison Table