That is, all subjects adapted to a similar degree, yet those in the DI group demonstrated significant reductions in volume load versus the CI group (see Tables 1 and 2). According to the Position Statement of International Society of Sports Nutrition, CR monohydrate (and not other forms of CR) is the most effective ergogenic nutritional supplement currently available to athletes in terms of increasing high-intensity exercise capacity and lean body mass during training . To date, several hundred peer-reviewed research studies have been conducted to evaluate the efficacy
this website of CR supplementation in improving exercise performance. Nearly 70% of these studies have reported a significant improvement in exercise capacity, while the others have generally reported non-significant gains in performance . Arciero et al.  compared 1-RM strength gains after 4 weeks of CR supplementation with or without resistance training. Bench press and leg press 1-RM were increased 8 and 16%, respectively, in the CR alone group and 18 and 42%, respectively, in the training group. This study suggests that approximately 40% of the increase in strength over the 4-week training and CR supplementation period is due to the acute effects of CR on force production, with selleck compound the remaining
60% due to some other mechanism, presumably an ability to train with higher workloads. Syrotuik et al.  reported that when training volume is equal, subjects ingesting CR or placebo experienced similar increases in muscle strength and weightlifting performance following an 8-week resistance training program. Thus, it is probable that subjects who ingest CR during resistance training do more work than those who do not [32, 33].
Again, this assumes that rest interval length remains constant, unlike the present design. Larson-Meyer et al.  conducted a double-blind, placebo-controlled study, which involved 14 division I female soccer players during their 13-week off-season resistance training program. Seven of the women were GBA3 CR loaded with approximately 7.5 g twice daily for 5 days, and then maintained their CR intake at 5 g/day for the remainder of the study. Following a repeated selleckchem measures analyses to establish trial by group interactions, it was determined that bench-press and squat 1-RM strength improved more for the CR group compared with the placebo group. There was, however, no difference between the two groups concerning overall gains in lean tissue as determined by dual energy x-ray absorptiometry (DXA). To our knowledge, the current study was the first to compare the chronic effects of CR supplementation in a training program using decreasing rest intervals between sets and exercises to a program using constant rest intervals. In strength-type regimens, the recommended rest interval of 2-5 minutes between sets has been shown to allow for consistent repetitions, without large reductions in the load [37–40].