Mechanical energy on anaerobic capacity during a supramaximal treadmill running in men: Is there influence between runners and active individuals?

Autor: Zagatto AM; Post-Graduate Program in Movement Sciences, Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Bauru, SP, Brazil., González JAM; Post-Graduate Program in Movement Sciences, Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Bauru, SP, Brazil.; Universidad Autónoma del Estado de México, Toluca, Mexico., de Poli RAB; Post-Graduate Program in Movement Sciences, Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Bauru, SP, Brazil., Barbieri FA; Post-Graduate Program in Movement Sciences, Department of Physical Education, School of Sciences, Sao Paulo State University (UNESP), Bauru, SP, Brazil., Bloedow LLS; Universidade Federal do Rio Grande do Sul, Exercise Research Laboratory, Porto Alegre, RS, Brazil., Peyré-Tartaruga L; Universidade Federal do Rio Grande do Sul, Exercise Research Laboratory, Porto Alegre, RS, Brazil.
Jazyk: angličtina
Zdroj: Physiological reports [Physiol Rep] 2023 Mar; Vol. 11 (5), pp. e15564.
DOI: 10.14814/phy2.15564
Abstrakt: This study verified whether mechanical variables influence the anaerobic capacity outcome on treadmill running and whether these likely influences were dependent of running experience. Seventeen physical active and 18 amateur runners, males, performed a graded exercise test and constant load exhaustive running efforts at 115% of intensity associated to maximal oxygen consumption. During the constant load were determined the metabolic responses (i.e., gas exchange and blood lactate) to estimate the energetic contribution and anaerobic capacity as well as kinematic responses. The runners showed higher anaerobic capacity (16.6%; p = 0.005), but lesser time to exercise failure (-18.8%; p = 0.03) than active subjects. In addition, the stride length (21.4%; p = 0.00001), contact phase duration (-11.3%; p = 0.005), and vertical work (-29.9%; p = 0.015). For actives, the anaerobic capacity did not correlate significantly with any physiologic, kinematic, and mechanical variables and no regression model was fitted using the stepwise multiple regression, while to runners the anaerobic capacity was significantly correlated with phosphagen energetic contribution (r = 0.47; p = 0.047), external power (r = -0.51; p = 0.031), total work (r = -0.54; p = 0.020), external work (r = -0.62; p = 0.006), vertical work (r = -0.63; p = 0.008), and horizontal work (r = -0.61; p = 0.008), and the vertical work and phosphagen energetic contribution presented a coefficient of determination of 62% (p = 0.001). Based on findings, it is possible to assume that for active subjects, the mechanical variables have no influence over the anaerobic capacity, however, for experienced runners, the vertical work and phosphagen energetic contribution have relevant effect over anaerobic capacity output.
(© 2023 The Authors. Physiological Reports published by Wiley Periodicals LLC on behalf of The Physiological Society and the American Physiological Society.)
Databáze: MEDLINE
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