Influence of aerobic fitness status on the power output decrement during repeated sprint running in females.

IF 1.3 4区医学 Q3 SPORT SCIENCES

Journal of Sports Medicine and Physical Fitness Pub Date : 2025-09-05 DOI:10.23736/S0022-4707.25.16605-X

Antonios Tsampoukos, Mary E Nevill, Keith Stokes, John G Morris, Gregory C Bogdanis

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引用次数: 0

Abstract

Background: This study examined the influence of two aerobic fitness indices (VO2max and [%4mM] i.e. the relative intensity [%VO2max] corresponding to a blood lactate concentration of 4 mmol·L^-1) on the recovery of power output during repeated sprinting.

Methods: Thirty female team players (age: 21.9 [2.9] y, body mass: 61.7 [5.4] kg, mean [standard deviation, SD]) took part in the study. VO2max and %4mM were assessed, and participants were divided into two groups in a cross-sectional design [well-trained (N.=15) or moderately trained (N.=15)] according to either VO2max (53.6 [3.4] vs. 47.6 [2.4] mL∙kg∙min^-1, P<0.001) or %4mM (86.7 [3.8] vs. 77.9 [4.1] %, P<0.001). Participants performed two 30 s sprints interspersed with 2 min of rest on a non-motorized treadmill. Blood samples were taken at rest, pre- and immediately post-sprinting for lactate, pH, ammonia, and plasma volume determination.

Results: When groups were separated according to %4mM, well-trained participants demonstrated superior recovery of peak and mean power output (PPO: 86.2 [10.3] vs. 74.5 [6.8] %, P<0.001; MPO30: 84.0 [7.8], vs. 77.1 [5.2] %, P<0.001), respectively]. When groups were separated according to VO2max, there were no differences in the recovery of PPO (82.8 [10.1] vs. 77.7 [10.5] %, P=0.188) and MPO30: (82.6 [6.5] vs. 78.9 [8.1] %, P=0.186). Blood metabolic responses were similar in all conditions (P=0.220-0.604).

Conclusions: The results suggest that %4mM is the most important aerobic fitness index for power output recovery during repeated sprint running.

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有氧适能状态对女性重复短跑运动中能量输出衰减的影响。

背景：本研究考察了两种有氧适应度指标（VO2max和[%4mM]，即血乳酸浓度为4 mmol·L-1时的相对强度[%VO2max]）对重复冲刺时功率输出恢复的影响。方法：选取年龄21.9 [2.9]y，体重61.7 [5.4]kg，平均[标准差，SD]的30名女队员为研究对象。评估VO2max和%4mM，并根据VO2max （53.6 [3.4] vs. 47.6 [2.4] mL∙kg∙min-1）将参与者分为两组（训练良好（n =15）或中等训练（n =15））。结果：当根据%4mM进行分组时，训练良好的参与者表现出更高的峰值和平均功率输出恢复(PPO: 86.2 [10.3] vs. 74.5 [6.8] %, P30；P2max， PPO（82.8[10.1]比77.7 [10.5]%，P=0.188）和MPO30（82.6[6.5]比78.9 [8.1]%，P=0.186）的恢复无差异。各组血液代谢反应相似（P=0.220 ~ 0.604）。结论：%4mM是反复短跑运动中最重要的有氧适能指标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sports Medicine and Physical Fitness 医学-运动科学

CiteScore

2.90

自引率

5.90%

发文量

393

审稿时长

6-12 weeks

期刊介绍： The Journal of Sports Medicine and Physical Fitness publishes scientific papers relating to the area of the applied physiology, preventive medicine, sports medicine and traumatology, sports psychology. Manuscripts may be submitted in the form of editorials, original articles, review articles, case reports, special articles, letters to the Editor and guidelines.