Abstract
The aim of this study was to compare the effect of morning and evening movement intervention on the following indicators of body composition: ratio (extracellular mass/body cell mass [ECM/BCM]), phase angle (PA), muscle mass (MM), and percentage of total body fat mass (FM%) in university female students with neutral chronotype who perform exercise in the morning (morning group [MG], n = 25, or evening (evening group [EG], n = 26). Statistical analysis did not show significant differences between the MG and EG: ECM/BCM, MG(PRE-POST) -0.001 +/- 0.10 vs.
EG(PRE-POST) -0.03 +/- 0.07, t = -1.121, p > 0.05, d = 0.16; PA, MG(PRE-POST) 0.18 +/- 0.29 vs. EG(PRE-POST) -0.28 +/- 0.31, t = 1.201, p > 0.05, d = 0.17; MM, MG(PRE-POST) 0.3 +/- 1.2 vs.
EG(PRE-POST) 0.4 +/- 1.0, t = 0.081, p > 0.05, d = 0.01; FM%, MG(PRE-POST) -0.04 +/- 1.5 vs. EG(PRE-POST) -0.2 +/- 1.3, t = -0.307, p > 0.05, d = 0.04.
Results did not show significant difference in effect (p > 0.05) of morning and evening intervention on changes in body composition in the selected population.