Effectiveness and characteristics of physical fitness training on aerobic fitness in vulnerable older adults: an umbrella review of systematic reviews.
Dennis VisserElizabeth M WattelKarin H L GerritsJohannes C van der WoudenFranka J M MeilandAafke J de GrootElise P JansmaCees M P M HertoghEwout B SmitPublished in: BMJ open (2022)
CRD42020140575.