| Autor: |
Sungwon Chae, Bailey, Chris A., Hill, David W., McMullen, Shawn M., Moses, Spencer A., Vingren, Jakob L. |
| Předmět: |
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| Zdroj: |
Journal of Strength & Conditioning Research; May2023, Vol. 37 Issue 5, p987-993, 7p |
| Abstrakt: |
The purpose of this study was to examine mechanical responses to rest redistribution with heavier loads (RR + L) in resistance-trained men. Eight men (23.0 ± 4.8 years, 1.76 ±0.06 m, 78.5 6 8.6 kg, back squat [BS] one-repetition maximum [1RM] of 138.7± 27.9 kg) completed 2 BS exercise sessions in a counterbalanced and a randomized order; RR + L: 4 sets of (2 3 5) repetitions with 90-second interset rest and 30-second intraset rest using 75% BS 1RM and traditional sets (TS): 4 sets of 10 repetitions with 120-second interset rest using 70% BS 1RM. During the concentric phase, mean force ( x̅F), velocity ( x̅V), and power ( x̅P) were collected for each repetition using a linear position transducer and analyzed the first 3 sets. Compared with TS, RR + L resulted in significantly greater x̅F (1820 ± 260 N vs. 1753 ± 248 N; p < 0.001; g = 0.25) and lower x̅V (0.47 ± 0.07 m·s-1 vs. 0.50 ± 0.09 m·s-1 ; p = 0.005; g = -0.35). However, no significant difference in x̅P (836±165 W vs. 871 ± 197 W; p = 0.082; g = -0.18) was found between RR + L and TS. In conclusion, the lack of difference in x̅P might be the result of the combination of greater x̅F and lower x̅V for RR + L compared with TS. Therefore, practitioners may consider using RR + L to augment x̅F without compromising x̅P and increasing total rest time. However, given the approximate 4% difference in x̅F, the effect of RR + L training on chronic strength adaptation is expected to be small. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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