Studies of Twin Responses to Understand Exercise Therapy (STRUETH): Body Composition
Hannah J Thomas, Channa E Marsh, Barbara A Maslen, Katrina J Scurrah, Louise H Naylor, Daniel J Green
Medicine & Science in Sports & Exercise | LIPPINCOTT WILLIAMS & WILKINS | Published : 2021
PURPOSE: We studied individual variability in exercise responses in twins. We hypothesized that 1) endurance (END) training would reduce fat mass whereas resistance (RES) training would increase lean mass, 2) individuals who did not respond to one modality would respond to the other, and 3) cross-sectional heritability estimates would be higher than estimates based on training responses. METHODS: DXA was undertaken in 84 same-sex untrained twins (30 monozygotic [MZ], 12 dizygotic [DZ]). Participants underwent 3 months of END and RES training, separated by 3 months washout. Twins trained in pairs. RESULTS: RES (P < 0.001) and END (P = 0.002) increased lean mass, with a greater change in RES (..View full abstract
Awarded by NHMRC Principal Research Fellowship
Awarded by Centre of Research Excellence Grant fromthe National Health andMedical Research Council, Exercise and Sport Science Australia, Clinical Exercise Physiology Research Grant
D. G. is supported by an NHMRC Principal Research Fellowship (APP1080914). This research was facilitated through access to Twins Research Australia, a national resource. K. S. and Twins Research Australia are supported by a Centre of Research Excellence Grant (ID: 1079102), fromthe National Health andMedical Research Council, Exercise and Sport Science Australia, Clinical Exercise Physiology Research Grant.