Jørn Wulff Helge

1 INTRODUCTION Ageing is linked with progressive loss of muscle mass and function, reducing independence and quality of life (Grosicki et al., 2022). An early distinctive hallmark of this process is an impairment in mitochondrial dynamics and mitochondrial respiration (Bishop et al., 2024), which compromises oxidative capacity and maximal oxygen uptake and contributes to age-related declines in functional performance (Goulding et al., 2024).

ORIGINAL ARTICLE Peter Krustrup Corresponding Author E-mail address: pkrustrup@health.sdu.dk https://orcid.org/0000-0002-1461-9838 Department of Sports Science and Clinical Biomechanics, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense, Denmark Sport and Health Sciences, Faculty of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom Shanghai University of Sports (SUS), Shanghai, China Corresponding author: Professor Peter Krustrup...