title: Chronic effect of light resistance exercise after ingestion of a high-protein snack on increase of skeletal muscle mass and strength in young adults.
abstract: We have previously reported on the possibility that light resistance exercise performed with a high plasma amino acid concentration resulting from the ingestion of a high-protein snack (HPS; 15 g protein, 18 g sugar) 3 h after a basal meal promotes the utilization of amino acids in peripheral tissues such as muscle in both rats and humans. In the present study, we further examined the effectiveness of a daily routine involving ingestion of HPS 3 h after a basal meal and subsequent light resistance exercise (dumbbell exercise) in increasing the mass and strength of human muscle. Ten young adult males were subject to the following 3 conditions for 5 wk each, with sufficient recovery period between each condition: (1) Snack-Exercise (SE), (2) Snack-Sedentary (SS), and (3) No snack-Exercise (NE). The SE group showed a significant increase in lean body mass and total cross-sectional area (CSA) of the right forearm muscles along with a significant decrease in body fat mass. The SS group showed no change in body composition. Furthermore, the SE group showed significant increase in grip strength and isometric knee extensor muscle strength, while the SS group showed no increase in muscle strength. The NE group showed significant increase in grip strength. In conclusion, daily routine ingestion of HPS 3 h after a basal meal and subsequent light resistance exercise is effective in increasing the mass and strength of human muscle.
authors: Graduate School of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan.
authors: Yushi
authors: Y
authors: Kato
authors: Atsushi
authors: A
authors: Sawada
authors: Shigeharu
authors: S
authors: Numao
authors: Masashige
authors: M
authors: Suzuki
mesh_terms: D000273:Adipose Tissue; D000328:Adult; D001823:Body Composition; D001825:Body Fluid Compartments; D004032:Diet; D004044:Dietary Proteins / Q000494:pharmacology*; D015444:Exercise / Q000502:physiology*; D018737:Hand Strength; D006801:Humans; D007717:Knee; D007719:Knee Joint; D008297:Male; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000502:physiology*; D009929:Organ Size; D055070:Resistance Training; D055815:Young Adult
chemical_list: D004044:Dietary Proteins