Ho, IMK, Luk, JTC, Ngo, JK, and Wong, DP. Effects of different intraset rest durations on lifting performance and self-perceived exertion during bench press exercise. J Strength Cond Res 35(8): 2114–2120, 2021—This study compared the number of successful repetitions, failure rates, and ratings of perceived exertion (RPEs) among intraset rest (ISR) protocols (0-, 20-, or 40-second rest between third and fourth repetitions) during bench press exercise with total 3 sets and 6 repetitions per set at 6 repetition maximum (6RM) load. Thirty-four college-aged men performed 6RM loads with ISR 0, 20, and 40 on 3 separate visits in a counterbalanced order while the total rest time and duration of each protocol was equated. Results showed failure rates of 32.4% for ISR0 (11 subjects with failed repetition), 14.7% for ISR20, and 2.9% for ISR40. The ISR had a small positive effect on increasing successful repetitions in: second set, ISR40 vs. ISR0 and ISR20 vs. ISR0 (both +0.2 rep, d = 0.28); third set, ISR40 vs. ISR0 (+0.5 rep, d = 0.55) and ISR20 vs. ISR0 (+0.4 rep, d = 0.39); and total number of repetition: ISR40 vs. ISR0 (+0.7 rep, d = 0.46) and ISR20 vs. ISR0 (+0.5 rep, d = 0.36). The ISR also had small effect on decreasing RPE in: second set, ISR40 vs. ISR0 (−0.6, d = −0.21); third set, ISR40 vs. ISR0 (−0.7, d = −0.26); and average RPE of the 3 sets, ISR40 vs. ISR0 (−0.6, d = −0.24). The longer ISR could further decrease RPE only in the third set (ISR40 vs. ISR20: −0.6, d = −0.23, small effect). Strength coaches may use the ISR40 rest redistribution to reduce RPE and enhance repetition sustainability.
Background Low-dye taping (LTD) is widely used by athletes and medical practitioners but the research regarding its impacts on athletic performance is lacking. This study investigated the effects of using low-dye taping on plyometric performance and muscle activities in recreational basketball players with overpronated feet. Methods Twelve collegiate males with at least three years basketball training experience and navicular drop (ND) value ≥10 mm performed the navicular drop, drop jump and countermovement jump tests. Surface electromyography of selected lower limb muscles were observed during bilateral free squat. All tests in non-taped (NT) and taped (TAP) conditions were counterbalanced using repeated crossover study design. Paired t-test with an alpha level of 0.05 and non-clinical magnitude-based decision (MBD) with standardized effects were used to analyze data. Results Contact time and reactive strength index (RSI) in the TAP condition were significantly shorter (p = 0.041) and higher (p<0.01) than the NT condition respectively. No significant difference in CMJ performance between NT and TAP was observed. MBD demonstrated clear effects on both ND (standardized effect: -1.54±0.24), flight time (standardized effect: 0.24±0.30), contact time (standardized effect: -0.27±0.21), RSI (standardized effect: 0.69±0.35) and eccentric activities of inferior gluteus maximus (standardized effect: 0.23±0.35), gluteus medius (standardized effect: 0.26±0.29) and tibialis anterior (standardized effect: 0.22±0.06). Conclusions LDT is effective in correcting overpronated feet by increasing ND height. Meanwhile, it provides a small increase in RSI and gluteal muscle activity during the eccentric (down) phase of the bilateral squat, and without affecting CMJ performance. Conditioning coaches or therapists may use LDT to enhance gluteal activation for reducing injury occurrence and reactive strength performance in drop jump tasks.
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