The types of strength training exercises
Among resistance training exercises, it is possible to distinguish 2 main types of exercises according to their degree of muscular involvement: compound exercises and isolation exercises. Compound exercises recruit multiple muscle groups simultaneously...
By Marouan Ariane
In the design of an effective muscle building program, it is imperative to distinguish exercises according to their biomechanical complexity: basic (compound) movements and isolation (targeted) movements.
The choice of the order and ratio between these two types of exercises determines the effectiveness of the anabolic response and the quality of motor unit recruitment.
1. Basic Exercises: The Pillars of Development
The basic exercises, called multi-joint, engage multiple joints simultaneously. They involve complete muscle chains including major motor muscles, synergists (assistance), and stabilizers.
Metabolic and Neurological Advantages
Because they allow the manipulation of heavy loads, these exercises induce a more significant hormonal response (testosterone, growth hormone). They are the guarantors of structural strength and muscle density.
Repertoire of Compound Movements by Group:
- Chest: Bench Press (barbell/dumbbells), Dips (chest focus).
- Back: Pull-ups (weighted or not), Barbell Rows, Deadlift.
- Lower Body: Squat, Leg Press, Walking Lunges.
- Shoulders: Military Press, Arnold Press, High Pull.
2. Isolation Exercises: The Precision of Detail
Unlike compound movements, isolation exercises are single-joint. They aim to concentrate the mechanical stress on a specific muscle bundle by limiting the involvement of peripheral muscles.
Strategic Utility and Finishing
Isolation is crucial to correct muscle imbalances, catch up on a developmental lag (weak point), or maximize metabolic stress (congestion) at the end of a workout. They allow for a superior mind-muscle connection.
Repertoire of Isolation Movements by Group:
- Chest: Flyes (dumbbells/cables), Pec-Deck.
- Back: Pullover (high pulley or dumbbell), Unilateral Machine Rows.
- Arms: Curls (Biceps), Triceps Extensions (high pulley).
- Legs: Leg Extension (Quadriceps), Leg Curl (Hamstrings).
- Small Groups: Calves (standing/seated), Lateral Raises (Middle Delts).
3. Programming and Optimal Ratio
A balanced session must respect a logical hierarchy to optimize energy expenditure and nervous performance.
The 75/25 Rule
On average, 75% of your work volume should be devoted to multi-joint exercises, with 25% for isolation. Basic exercises are placed at the beginning of the session, when the central nervous system is fresh and glycogen reserves are maximal.
| Characteristic | Basic Exercises | Isolation Exercises |
|---|---|---|
| Number of Joints | Multiple (2+) | Single (1) |
| Load Lifted | High (Maximal) | Moderate to Light |
| Primary Objective | Strength and Global Mass | Detail and Weak Point |
| Workout Placement | Beginning (Performance Focus) | End (Congestion Focus) |
Expert Focus: The Exception of Pre-Fatigue
It may happen that we reverse this order to respond to the principle of pre-fatigue. We isolate a muscle (e.g., Leg Extension) before a basic exercise (e.g., Squat). This technique ensures that the target muscle saturates before the assistance muscles, a formidable method for breaking growth plateaus.
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