COVID-19	The Coronavirus Disease 2019
WHO	World Health Organization
RT	Resistance training
K6	Kessler Psychological Distress Scale
WHO-5	Well-Being Index
CES-D	Center for Epidemiologic Studies-Depression Scale
CSA	Cross-sectional area
MRI	Magnetic resonance imaging
ES	Effect size
IGF-1	Insulin-like Growth Factor 1
BDNF	Brain-Derived Neurotrophic Factor