The purpose of the present study was to investigate the effects of a 12-week tai chi program in type I dynapenic and nondynapenic postmenopausal women.
Sixty-two postmenopausal women were recruited. Body composition, handgrip strength, functional capacities
, cardiorespiratory functions (forced expiratory volume in 1 s and oxygen consumption per unit time peak), and quality of life (36-item Short-Form Health Survey) were measured before and after the intervention.
Type I dynapenic postmenopausal women showed a significant decrease in body weight (P
= 0.004), fat mass percentage (P
= 0.02), and skeletal muscle mass
(SM; in kilograms; P
= 0.02), whereas handgrip strength (in kilograms per SMkg; P
= 0.04), functional capacity test scores (P
≤ 0.050), and general health
= 0.01) significantly increased. In nondynapenic postmenopausal women, we observed a significantly decreased waist circumference (P
= 0.04) and a significantly increased chair-stand test (P
< 0.001) and one-leg stance test (P
= 0.04) scores. In addition, significantly lower systolic (P
≤ 0.001) and diastolic (P
≤ 0.005) blood pressures were observed in both groups after the intervention. Finally, type I dynapenic women showed a more pronounced general health
perception increase compared with nondynapenic individuals (P
Tai chi training improved body composition, muscle strength
, functional capacities
, and general health
perception in postmenopausal women, and this last improvement was more pronounced in type I dynapenic individuals. Therefore, tai chi may be considered as an alternative physical training method in preventing the occurrence of disabilities and frailty
in postmenopausal women with type I dynapenia.