Effect of Intermittent Blood Volume Fluctuation of Light Resistance Exercise after Ingestion of the High-Protein Snacks on Plasma Branched-Chain Amino Acid Concentrations in Young Adults

Abstract

SummaryThe study investigated exercise patterns resulting in the more efficient promotion of amino acid utilization. High-protein snacks (HPS; 15 g protein, 18 g sugar) were ingested by 8 young adult subjects 3 h after the basal meal ingestion. Sixty minutes after the HPS ingestion, the subjects performed arm flex/extend exercises for 15 min. The difference between 2 exercise patterns was compared. Pattern 1: High-number long-interval (HL) arm flex/extend (3 ϩ 3 s) exercise; the HL group performed 9 sets of 15 exercises with a 10 s interval between sets. Pattern 2: Low-number short-interval (LS) arm flex/extend (3 ϩ 3 s) exercise; the LS group performed 27 sets of 5 exercises with a 3-4 s interval between sets (135 exercises during 15 min, respectively). The plasma branched-chain amino acid (BCAA) concentrations were measured before the HPS ingestion, before the exercise, and 60 and 90 min after the HPS ingestion. The plasma BCAA concentrations increased significantly after the HPS ingestion. In the HL group, BCAA concentration increased consistently during the period and 60 to 90 min after the HPS ingestion. During the same period in the LS group the BCAA concentration stopped increasing. After HPS ingestion, a significantly greater suppressive effect on plasma BCAA concentration was seen in the LS group compared to the HL group. Results confirmed that the intermittent blood volume fluctuation in muscle tissue during the exercise pattern performed by the LS group had an effect on the utilization of nutritional components (BCAA, glucose) from the blood, and showed the possibility that the group where the blood volume in the muscle tissue increased/lowered with higher frequency was a more effective exercise pattern for nutrient utilization.

Dietary egg-white protein increases body protein mass and reduces body fat mass through an acceleration of hepaticβ-oxidation in rats

“…It has been reported previously that ovalbumin and ovotransferrin from EWP fractions promote the growth of cultured muscle cells (C2C12 cells) ( 26 ) . In addition, the effects of the amino acids within EWP are likely because of the presence of branched amino acids in egg whites, which increase the branched amino acid concentrations in the blood when ingested ( 27 ) . After exercise, the concentrations of these amino acids decrease ( 27 ) , and it is possible that after exercise the branched amino acids in EWP are used for muscle repair and hypertrophy.…”

“…In addition, the effects of the amino acids within EWP are likely because of the presence of branched amino acids in egg whites, which increase the branched amino acid concentrations in the blood when ingested ( 27 ) . After exercise, the concentrations of these amino acids decrease ( 27 ) , and it is possible that after exercise the branched amino acids in EWP are used for muscle repair and hypertrophy. Consistent with this, the combination of strength training and EWP ingestion has been found to increase muscle mass and strength ( 28 ) , and egg whites are thus considered to be an effective source of protein for body building.…”

Chronic Effect of Light Resistance Exercise after Ingestion of a High-Protein Snack on Increase of Skeletal Muscle Mass and Strength in Young Adults

“…In addition, some studies on ingestion of proteins or amino acids prior to exercise have shown the ingestion to be effective in muscle protein synthesis (16)(17)(18). This study fixed the timing of HPS ingestion at 3 h after a basal meal (1)(2)(3)(4) in the SE and SS groups, thereby aiding the daily ingestion of proteins by elderly people with reduced appetite. Since the demands of the small intestine and liver are quickly met by amino acids from the protein of the basal meal, amino acids from the HPS protein are rapidly disseminated to the peripheral tissues.…”

Egg white hydrolysate improves fatigue due to short‐term swimming load test in mice

“…Moreover, BCAAs have been reported to ameliorate muscle fatigue (Matsumoto et al., 2009). Their concentration in the blood increases after ingesting an EWP preparation and decreases after exercise (Kato, Numao, Miyauchi, & Suzuki, 2010). Therefore, an antifatigue effect mediated by BCAAs can also be expected.…”