La whey avant + après l'entraînement fait prendre du muscle et de la force tout en faisant perdre du gras
Eight weeks of pre- and post-exercise whey protein supplementation increases lean body mass and improves performance in Division III collegiate female basketball players
Lemuel W Taylor IV Physiologie appliquée, nutrition et métabolisme, Publié sur le Web 09 November 2015.10.11
We examined if 8 weeks of whey protein (WP) supplementation improved body composition and performance measures in NCAA Division III female basketball players. Subjects were assigned to consume 24 grams WP (n = 8, 20 ± 2 years, 170 ± 6 cm, 66.0 ± 3.1 kg) or 24 grams of maltodextrin (MD) (n = 6, 21 ± 3 years, 169 ± 6 cm, 68.2 ± 7.6 kg) immediately prior to and following training (4 d/wk anaerobic and resistance training) for 8 weeks. Prior to (T1) and 8 weeks following supplementation (T2), subjects underwent dual x-ray absorptiometry (DEXA) body composition assessment as well as performance tests.
The WP group gained lean mass from T1 to T2 (+1.4 kg, p = 0.003) whereas the MD trended to gain lean mass (+0.4 kg, p = 0.095). The
WP group also lost fat mass from T1 to T2 (-1.0 kg, p = 0.003) whereas the MD group did not (-0.5 kg, p = 0.41). The
WP group presented greater gains in 1RM bench press (+4.9 kg) compared to the MD group (+2.3 kg) (p < 0.05). Moreover, the WP group improved agility from T1 to T2 (p = 0.001) whereas the MD group did not (p = 0.38). Both groups equally increased leg press 1RM, vertical jump and broad jump performances. This study demonstrates that eight weeks of WP supplementation improves body composition and select performance variables in previously-trained female athletes.