Less is known about the effects of acute exercise on adiponectin concentrations (Simpson and Singh, 2008). Few studies have investigated the adiponectin response to acute exercise in trained subjects (Jurimae et al., 2005; 2006). Actually, two trials reported significant delayed increases (30 min) in adiponectin concentrations (Jurimae et al. 2005; 2006). The aim of the present study was to analyse the effects of acute maximal exercise followed by 60 minutes of recovery on plasma concentration of adiponectin, insulin and glucose in elite male cyclist. Methods Eleven elite male cyclists participated in this study (mean and SD) (age : 19.82 ± 4.67 years; body mass: 65.64 ± 6.09 kg; height: 176.82 ± 7.19 cm; BMI : 20,97 ± 1.35 kg.m-2; VO2max: 59.68 ± 4.85 ml.min.kg-1). Subjects performed maximal cycling exercise followed by 60 minutes passive recovery. Blood samples were obtained before, at the end and after 30 and 60 min of recovery. Result Adiponectin concentrations were unchanged after exercise and during recovery. However, insulin concentrations were significantly lowered during recovery (-13.66, P<0.05 after 30 min recovery and -77.57, P<0.01 after 60 min recovery). In the other hand, plasma glucose rose after 30 min of recovery (26.90, P<0.01). Discussion The present study indicated that acute exercise failed to induce significant changes in adiponectin concentrations in elite trained subjects. These results were confirmed by several other studies (Punyadeera et al., 2005, Jamurtas et al., 2006). Hyperglycemia was associated with hyperinsulinemia soon after a brief bout of exercise greater than 85% of VO2max (Kreamer et al., 2003). Further, there is evidence that insulin is an inhibitor of adiponectin gene expression (Fasshauer et al. 2001), yet with an increase in circulating insulin concentrations in the present study, no discernible changes in adiponectin were observed. Our results suggested that acute maximal exercise not stimulate the production and the release of adiponectin during 60 min recovery post-acute exercises. Furthermore, it appears that after acute maximal exercise adiponectin is not associated with insulin and/or glucose modifications in elite cyclists. References Fasshauer M, Klein J, Neumann S, Eszlinger M, Paschke R. (2001). FEBS Lett, 26, 507(2), 142-146. Jamurtas AZ., Theocharis V, Koukoulis G, Stakias N, Fatouros IG, Kouretas D, Koutedakis Y. (2006) Eur J Appl Physio, 97, 122- 126. Jurimae J, Hofmann P, Jurimae T, Mäestu J, Purge P, Wonisch M, Pokan R, von Duvillard SP. (2006) 27, 272-277. Jurimae J, Purge P, Jurimae T. (2005), 93, 502-505. Kraemer RR, Aboudehen KS, Carruth AK, Durand RT, Acevedo EO, Hebert EP, Johnson LG, Castracane VD. (2003). Med Sci Sports Exerc, 35, 1320-1325. Simpson KA, Singh MA. (2008) Obesity (Silver Spring), 16(2), 241-256. Punyadeera C, Zorenc AH, Koopman R, McAinch AJ, Smit E, Manders R, Keizer HA, Cameron-Smith D, van Loon LJ. (2005). Eur J Endocrinol, 152, 427-436.
© Copyright 2009 14th annual Congress of the European College of Sport Science, Oslo/Norway, June 24-27, 2009, Book of Abstracts. Veröffentlicht von The Norwegian School of Sport Sciences. Alle Rechte vorbehalten. / Übersetzt mit https://www.DeepL.com/Translator