Body composition
At the end of the 12 weeks, mean changes of body fat
mass (BFM) and LM were significant between the groups
(P < .001). When compared with baseline, within-group
mean changes of BFM in the WPC group (−9.2%) and the
SPI group (−3.1%) were significant (P < .001 and P = .001,
respectively). After 12 weeks of supplementation, the
mean changes of LM were significant between groups (P <
.001), and within-group mean changes were significant for
WPC (4.1 kg, P < .001) and nonsignificant for SPI groups
(0.44 kg, P = .37).