“…The choice of outcome measurement does matter in an intervention study. Previous studies primarily focus on the intervention effectiveness on frailty, muscle outcomes (mass, strength and physical performance), falls and physical functional abilities, but ignore intervention effects on mental and social functioning (Cameron et al, 2013; Chan et al, 2012; Chen et al, 2020; Clegg et al, 2014; Fairhall et al, 2014; Haider et al, 2017; Hsieh et al, 2019; Jadczak et al, 2018; Kang et al, 2019; Kapan et al, 2017; Kim et al, 2015; Kwon et al, 2015; Lai et al, 2021; Liu et al, 2021; Losa‐Reyna et al, 2019; Luger et al, 2016; Meng et al, 2020; Sadjapong et al, 2020; Sanchis et al, 2021; Suikkanen et al, 2021a; Suikkanen et al, 2021b; Tarazona‐Santabalbina et al, 2016; Yu et al, 2020). Essentially, researchers are encouraged to investigate the effectiveness of exercise interventions from a broad perspective for comprehensive effectiveness evaluation, because exercise interventions have the potential to improve physical, mental and social functioning (Dedeyne et al, 2017; Garcia‐Hermoso et al, 2020; Tarazona‐Santabalbina et al, 2016).…”