ArticleEuropean journal of applied physiology2014
Faster VO(2) kinetics after eccentric contractions is explained by better matching of O(2) delivery to O(2) utilization.
Article in European journal of applied physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Effect of exercise-induced muscle damage on vascular function and skeletal muscle microvascular deoxygenation.Physiological reports · 2016Article
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4 authors.
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Abstract
purposeThis study examined the impact of eccentric exercise-induced muscle damage on the rate of adjustment in muscle deoxygenation and pulmonary O2 uptake (VO(2p)) kinetics during moderate exercise.
methodsFourteen males (25 ± 3 year; mean ± SD) completed three step transitions to 90 % θL before (Pre), 24 h (Post24) and 48 h after (Post48) eccentric exercise (100 eccentric leg-press repetitions with a load corresponding to 110 % of the participant's concentric 1RM). Participants were separated into two groups: phase II VO(2p) time constant (τVO(2p)) ≤ 25 s (fast group; n = 7) or τVO(2p) > 25 s (slow group; n = 7). VO(2p) and [HHb] responses were modeled as a mono-exponential.
resultsIn both groups, isometric peak torque (0°/s) at Post24 was decreased compared to Pre (p < 0.05) and remained depressed at Post48 (p < 0.05). τVO(2p) was designed to be different (p < 0.05) at Pre between the Fast (τVO(2p); 19 ± 4 s) and Slow (32 ± 6 s) groups. There were no differences among time points (τVO(2p): Pre, 19 ± 4 s; Post24, 22 ± 3 s; Post48, 20 ± 4 s) in the Fast group. In Slow, there was a speeding (p < 0.05) from the Pre (32 ± 6 s) to the Post24 (25 ± 6) but not Post48 (31 ± 6), resulting in no difference (p > 0.05) between groups at Post24. This reduction of τVO(2p) was concomitant with the abolishment (p < 0.05) of an overshoot in the [HHb]/VO(2p) ratio.
conclusionWe propose that the sped VO(2p) kinetics observed in the Slow group coupled with an improved [HHb]/VO(2p) ratio suggest a better matching of local muscle O2 delivery to O2 utilization following eccentric contractions.
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