Two randomized, double-blind, placebo-controlled trials in 125 older adults (≥65 years) examined lemon myrtle (LM) supplementation with 12 weeks of low-load resistance training. In the high-volume group (three sets), LM increased anterior thigh (AT) muscle thickness by 1.29 mm versus placebo (95% CI: -0.17 to 2.75 mm), while in the low-volume group (one set), the increase was 1.59 mm (95% CI: 0.19-2.98 mm), reaching statistical significance. Despite no improvements in walking speed or chair stand performance, these findings suggest LM functions as a metabolic amplifier, enhancing the muscle’s adaptive response under low training load possibly through improved redox balance, nitric oxide signaling, or mitochondrial efficiency. Thus, LM may improve the efficiency of muscle hypertrophy in older adults with limited exercise tolerance.
Source : https://www.sciencedirect.com/science/article/pii/S1279770725002313?via%3Dihub
