Acute resistance exercise training does not augment mitochondrial remodelling in master athletes or untrained older adults.

Ageing is associated with alterations to skeletal muscle oxidative metabolism that may be influenced by physical activity status, although the mechanisms underlying these changes have not been unraveled. Similarly, the effect of resistance exercise training (RET) on skeletal muscle mitochondrial regulation is unclear. Seven endurance-trained masters athletes ([MA], 74 ± 3 years) and seven untrained older adults ([OC].