Muscle strength
The ability of a muscle to produce maximum tension against a resistance, depending on muscle mass, nerve recruitment and nutritional factors.
Muscle strength is the ability to generate maximum tension. It depends on two components: muscle mass (fibre size) and nerve recruitment (the nervous system’s ability to activate the fibres). That is why you can get stronger without necessarily getting bigger (neural adaptations).
A fresh angle (strength ≠ hypertrophy): a little-known distinction. Strength and muscle size (hypertrophy) are linked but distinct
- Beginners first gain strength through neural adaptations (better fibre recruitment), even before adding muscle. Hence the rapid progress in the first few weeks
- Some athletes (lightweight weightlifters) are extremely strong without being massive: they optimise nerve recruitment rather than size
- Conversely, a bodybuilder can be very muscular but less “strong” in pure strength than a lighter powerlifter
The nutritional role: strength is built with:
- Enough protein (~1.6-2.2 g/kg) to repair and build
- Creatine: one of the few supplements proven for strength (replenishes explosive energy)
- Carbohydrate to fuel training
- Enough calories (a severe deficit limits strength gains)
Strength, health and longevity: an underrated angle, muscle strength (and grip strength in particular) is a predictor of longevity and good health in ageing. It protects against falls, preserves independence and regulates metabolism. Maintaining your strength as you age (against sarcopenia) is a major health investment, not just an aesthetic one.
Muscle as a metabolic organ: beyond strength, muscle “soaks up” glucose (insulin sensitivity), produces anti-inflammatory myokines and protects bones. Being strong means being metabolically healthy.
In practice: progressive resistance training (gradually increasing loads), spread-out protein, creatine, recovery (muscle is built at rest), sleep.