Energy expenditure characteristics of weight lifting: 2 sets to fatigue.
Energy expenditure characteristics of weight lifting: 2 sets to fatigue.
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举重能量消耗特点：2组至疲劳。
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Andrew J. TenBraak
中科院分区：
文献类型：
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作者：
C. Scott;M. Leary;Andrew J. TenBraak
我们调查了2套卧推在70%，80%和90%的1次重复最大值（1 RM）内和之间的工作和能量消耗特性。对于两组来说，疲劳都是终点。我们问：多组训练是否会影响随后的有氧、无氧和运动后过量耗氧量（EPOC）贡献的沿着功输出？10名男性参加。在70%和80%方案中，第二组的工作量明显较少，但在90%方案中并非如此。在所有方案中，第二组的无氧（糖酵解）能量消耗较少。然而，在所有方案中，组间的功/能消耗比没有差异。方案之间的总功有显著差异，随着重量增加而变小：70%，637.1 ± 122.4 J; 80%，512.4 ± 93.4 J; 90%，324.7 ± 92.6 J（p < 0.001）。在第1组、第2组或总体组合后，各方案的EPOC无差异。此外，总体EPOC与总体工作量无关（r = 0.31，p = 0.11）。EPOC总体上与有氧（r = 0.68，p < 0.001）和无氧（r = 0.65，p < 0.001）能量消耗相关。就工作/能量消耗比而言，与70%和80%相比，90% 1 RM的最少完成工作量需要更大的能量消耗，因为EPOC对所有人都是相似的。随着更多的工作完成（即，较低的体重，更多的重复），有氧和无氧运动能量消耗似乎相应地增加，但绝对EPOC基本上保持不变，对总能量消耗的贡献较小。
We investigated the work performed and energy expenditure characteristics within and among 2 sets of the bench press at 70%, 80%, and 90% of 1 repetition maximum (1RM). For both sets fatigue was the end point. We asked: do multiple sets affect subsequent work output along with aerobic, anaerobic, and excess postexercise oxygen consumption (EPOC) contributions? Ten males participated. Work was significantly less for the 2nd set within the 70% and 80% protocols, but not the 90% protocol. Anaerobic (glycolytic) energy expenditure was less for the 2nd set within all protocols. However, within all protocols, the work / energy expenditure ratio was not different between sets. Overall work was significantly different among protocols, becoming less as the weight lifted was increased: 70%, 637.1 ± 122.4 J; 80%, 512.4 ± 93.4 J; 90%, 324.7 ± 92.6 J (p < 0.001). EPOC was not different among protocols after the 1st set, 2nd set, or combined overall. Moreover, the overall EPOC did not correlate with overall work performed (r = 0.31, p = 0.11). EPOC overall did correlate with aerobic (r = 0.68, p < 0.001) and anaerobic (r = 0.65, p < 0.001) energy expenditures. In terms of a work / energy expenditure ratio, the least amount of completed work at 90% 1RM required greater energy expenditure as compared with 70% and 80% because of an EPOC that is similar for all. As more work is completed (i.e., lower weight, more repetitions), aerobic and anaerobic exercise energy expenditures appear to increase accordingly, yet absolute EPOC remains essentially unchanged, contributing less to the overall energy expenditure.