Possamai Leonardo Trevisol, Borszcz Fernando Klitzke, de Aguiar Rafael Alves, de Lucas Ricardo Dantas, Turnes Tiago
Sports Center, Physical Effort Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil.
Human Performance Research Group, Center for Health and Sport Science, Santa Catarina State University, Florianópolis, Brazil.
Eur J Sport Sci. 2022 Mar;22(3):371-380. doi: 10.1080/17461391.2021.1874541. Epub 2021 Feb 8.
The aim of this study was threefold: (a) to compare the maximal lactate steady state (MLSS) with critical power (CP); (b) to describe the relationship of MLSS with rowing performances; and (c) to verify the agreement of MLSS with several exercise intensity thresholds in rowers. Fourteen male rowers (mean [SD]: age = 26 [13] years; height = 1.82 [0.05] m; body mass = 81.0 [7.6] kg) performed on a rowing ergometer: (I) discontinuous incremental test with 3 min stages and 30-s recovery intervals (INC); (II) continuous incremental test with 60-s stages (INC); (III) two to four constant workload tests to determine MLSS; and (IV) performance tests of 500, 1000, 2000 and 6000 m to determine CP. Twenty-seven exercise intensity thresholds based on blood lactate, heart rate and ventilatory responses were determined by incremental tests, and then compared with MLSS. CP (257 [38] W) was higher than MLSS (187 [25] W; < 0.001), with a very large mean difference (37%), large typical error of estimate (14%) and moderate correlation ( = 0.48). Despite the correlations between MLSS and most intensity thresholds ( > 0.70), all presented low correspondence (TEE > 5%), with a lower bias found between MLSS and the first intensity thresholds (-12.5% to 4.1%). MLSS was correlated with mean power during 500 m ( = 0.65), 1000 m ( = 0.86) and 2000 m ( = 0.78). In conclusion, MLSS intensity is substantially lower than CP and presented low agreement with 27 incremental-derived thresholds, questioning their use to estimate MLSS during rowing ergometer exercise. MLSS was substantially lower than CP in rowing exercise with a mean difference of 37%, much larger than the difference commonly found in running and cycling exercise (i.e., ?10%).A clear disagreement was reported between MLSS and 27 physiological thresholds determined in different incremental tests.There is a positive association of MLSS with 500, 1000 and 2000 m rowing ergometer performance tests.
(a) 比较最大乳酸稳态（MLSS）和临界功率（CP）；(b) 描述MLSS与划船成绩的关系；(c) 验证MLSS与划船运动员几个运动强度阈值的一致性。14名男性划船运动员（平均[标准差]：年龄 = 26[13]岁；身高 = 1.82[0.05]米；体重 = 81.0[7.6]千克）在划船测力计上进行了以下测试：(I) 采用3分钟阶段和30秒恢复间隔的间断递增测试（INC）；(II) 采用60秒阶段的连续递增测试（INC）；(III) 进行两到四次恒定负荷测试以确定MLSS；(IV) 进行500米、1000米、2000米和6000米的成绩测试以确定CP。通过递增测试确定了基于血乳酸、心率和通气反应的27个运动强度阈值，然后与MLSS进行比较。CP（257[38]瓦）高于MLSS（187[25]瓦；P<0.001），平均差异非常大（37%），估计的典型误差大（14%），相关性中等（r = 0.48）。尽管MLSS与大多数强度阈值之间存在相关性（r>0.70），但所有阈值的对应性都较低（TEE>5%），在MLSS与第一个强度阈值之间发现的偏差较小（-12.5%至4.1%）。MLSS与500米（r = 0.65）、1000米（r = 0.86）和2000米（r = 0.78）期间的平均功率相关。总之，MLSS强度显著低于CP，与2
