However, based on this final statement, our failure to include a true control group not receiving CR supplementation but undergoing a progressive decrease in rest interval length does not allow us to make such a statement with absolute confidence, regarding

the ability of selleck chemicals llc CR to off-set any additional decrease in training volume that may have been apparent. This is indeed a limitation of the present work and should be a focus of future research. A previous study from our research group [15] compared the effect of 8-weeks of resistance training using CI and DI between sets and exercises on strength and PRI-724 hypertrophy. Recreationally resistance training subjects were randomly assigned to either a CI or DI training group. The results indicated no significant differences between the CI and DI training protocols for CSA, 1RM and isokinetic peak torque. Similar to the current study, these results [15] indicated that a training protocol with DI was as effective as a CI protocol over short training periods (8-weeks) for increasing

maximal strength and muscle CSA. Muscle mass is important for health and survival through the lifespan [7]. Resistance training has been recognized as an essential component of a comprehensive fitness program for individuals

with diverse fitness goals [19]. Manipulation of training variables (e.g. load, volume, rest interval between sets) is dependent on the specific training PtdIns(3,4)P2 goals of the individual and the nature of the physical activities performed during daily life [20, 21]. The length of rest interval must be sufficient to recover learn more energy sources (e.g., adenosine triphosphate [ATP] and PCR), buffer and clear fatigue producing substances (e.g., H+ ions), and restore force production [22]. Certain ergogenic substances have been shown to augment resistance training adaptations beyond that which may occur through resistance training alone. With regard to the function of the Phosphagen energy system, the ergogenic value of CR supplementation has been examined extensively with significant benefits reported in strength/power, sprint performance, and/or work performed during multiple sets of maximal effort muscle contractions [1, 2, 23–25]. The improvement in exercise capacity has been attributed to increased total creatine (TCR) and PCR content, thus resulting in greater resynthesis of PCR, improved metabolic efficiency and/or an enhanced quality of training; thus promoting greater neuromuscular adaptations.