caa a22 4500 469055928 CHVBK 20180323132843.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF00717947 doi (NATIONALLICENCE)springer-10.1007/BF00717947 Effects of temperature on the maximal instantaneous muscle power of humans [Elektronische Daten] [G. Ferretti, M. Ishii, C. Moia, P. Cerretelli] Summary: The maximal instantaneous muscle power ( $$\dot w_{i,\max } $$ ) probably reflects the maximal rate of adenosine 5′-triphosphate (ATP) hydrolysis ( $$A\dot TP_{\max } $$ ), a temperature-dependent variable, which gives rise to the hypothesis that temperature, by affecting $$A\dot TP_{\max } $$ , may also influence $$\dot w_{i,\max } $$ . This hypothesis was tested on six subjects, whose vastus lateralis muscle temperature (T muscle) was monitored by a thermocouple inserted approximately 3 cm below the skin surface. The $$\dot W_{i,\max } $$ was determined during a series of high jumps off both feet on a force platform before and after immersion up to the abdomen for 90 min in a temperature controlled (T=20±0.1°C) water bath. ControlT muscle was 35.8±0.7°C, with control $$\dot W_{i,\max } $$ being 51.6 (SD 8.7) W · kg−1. After cold exposure,T muscle decreased by about 8°C, whereas $$\dot w_{i,\max } $$ 27% lower. The temperature dependence of $$\dot W_{i,\max } $$ was found to be less (Q 10 < 1.5, whereQ 10 is the temperature coefficient as calculated in other studies) than reported in the literature for $$A\dot TP_{\max } $$ . Such a lowQ 10 may reflect an increase in the mechanical equivalent of ATP splitting, as a consequence of the reduced velocity of muscle contraction occurring at lowT muscle. Springer-Verlag, 1992 Anaerobic alactic metabolism nationallicence Adenosine 5′-triphosphate nationallicence Maximal muscle power nationallicence Muscle temperature nationallicence Q 10 nationallicence Ferretti G. Département de Physiologie, Centre Médical Universitaire, Avenue de Champel 9, 1211, Genève 4, Switzerland aut Ishii M. Département de Physiologie, Centre Médical Universitaire, Avenue de Champel 9, 1211, Genève 4, Switzerland aut Moia C. Département de Physiologie, Centre Médical Universitaire, Avenue de Champel 9, 1211, Genève 4, Switzerland aut Cerretelli P. Département de Physiologie, Centre Médical Universitaire, Avenue de Champel 9, 1211, Genève 4, Switzerland aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 64/2(1992-03-01), 112-116 0301-5548 64:2<112 1992 64 421 https://doi.org/10.1007/BF00717947 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00717947 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ferretti G. Département de Physiologie, Centre Médical Universitaire, Avenue de Champel 9, 1211, Genève 4, Switzerland aut NATIONALLICENCE 700 1- Ishii M. Département de Physiologie, Centre Médical Universitaire, Avenue de Champel 9, 1211, Genève 4, Switzerland aut NATIONALLICENCE 700 1- Moia C. Département de Physiologie, Centre Médical Universitaire, Avenue de Champel 9, 1211, Genève 4, Switzerland aut NATIONALLICENCE 700 1- Cerretelli P. Département de Physiologie, Centre Médical Universitaire, Avenue de Champel 9, 1211, Genève 4, Switzerland aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 64/2(1992-03-01), 112-116 0301-5548 64:2<112 1992 64 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 214669750 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer