Vitamin d and physical activity status: associations with five-year changes in body composition and muscle function in community-dwelling older adults

摘要: Context: High vitamin D and physical activity (PA) levels are independently associated with improved body composition muscle function in older adults. Objective: The objective of this study was to investigate the interaction 25-hydroxyvitamin (25OHD) PA status maintenance Design Setting: This a 5-year prospective population-based Australian community-dwelling Participants: Participants included 615 volunteers aged 50 years old or [61.4 ± 6.9 (mean SD) y; 48% female] randomly selected from electoral rolls categorized according baseline serum 25OHD (≥ <50 nmol/L) <10 000 pedometer determined steps/d) as follows: high (VitD+PA+); low (VitD+PA−); (VitD-PA+); (VitD-PA−). A subset 518 participants completed accelerometer assessments during follow-up. Main ...