Cardio alone, even at high intensity, is insufficient for maintaining muscle mass in older individuals; it must imperatively be combined with resistance training and adequate protein intake.

noli's read

This advice is based on research (often associated with studies on aging and physical activity in Australia) using DXA scans, the gold standard for measuring body composition. It is well-established scientifically, through numerous meta-analyses, that sarcopenia (age-related muscle mass loss) is a major issue and that resistance training (strengthening) is superior to cardio alone for preserving muscle mass and strength. The claim that cardio alone can lead to muscle mass loss in seniors is plausible in a context of caloric restriction or a lack of sufficient mechanical stimulation for muscle fibers. The idea that cardio is not a single solution for 'healthy aging' is supported by current public health guidelines, which advocate for a combined approach (cardio + strengthening). The point is solid, although potential exaggeration lies in dramatizing cardio as inherently 'costly' or dangerous, while it remains essential for cardiovascular health. The evidence supports an integrative approach rather than an opposition between these forms of exercise.

the sources

1. 1Coleman CJ, McDonough DJ, Pope ZC, Pope CA 2022
2. 2López-Bueno R, Ahmadi M, Stamatakis E, Yang L, del Pozo Cruz B 2023
3. 3Wu Y, Wang W, Liu T, Zhang D 2017
4. 4Li R, Xia J, Zhang X, et al. 2018
5. 5Morton RW, Murphy KT, McKellar SR, et al. 2018
6. 6Leidy HJ, Clifton PM, Astrup A, et al. 2015