Item request has been placed! ×
Item request cannot be made. ×
loading  Processing Request

Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups.

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
  • معلومة اضافية
    • Author-Supplied Keywords:
      exercise
      exercise intensity domain
      fatigue
      isometric
      maximal voluntary contraction
      muscle volume
      contraction maximale volontaire
      domaine de l'intensité de l'effort
      exercice physique
      fatigue
      isométrique
      volume musculaire
      Language of Keywords: English; French
    • Abstract:
      The objective of this study was to test the hypotheses that end-test torque (ET) (expressed as % maximal voluntary contraction; MVC) is higher for plantar flexors (PF) than knee extensors (KE) muscles, whereas impulse above ET (IET) is higher for KE than PF. Thus, we expected that exercise tolerance would be longer for KE than PF only during the exercise performed above ET. After the determination of MVC, 40 men performed two 5-min all-out tests to determine ET and IET. Eleven participants performed a further 4 intermittent isometric tests, to exhaustion, at ET + 5% and ET - 5%, and 1 test for KE at the exercise intensity (%MVC) corresponding to ET + 5% of PF. The IET (7243.2 ± 1942.9 vs. 3357.4 ± 1132.3 N·m·s) and ET (84.4 ± 24.8 vs. 73.9 ± 19.5 N·m) were significantly lower in PF compared with KE. The exercise tolerance was significantly longer for PF (300.7 ± 156.7 s) than KE (156.7 ± 104.3 s) at similar %MVC (∼60%), and significantly shorter for PF (300.7 ± 156.7 s) than KE (697.0 ± 243.7 s) at ET + 5% condition. However, no significant difference was observed for ET - 5% condition (KE = 1030.2 ± 495.4 s vs. PF = 1028.3 ± 514.4 s). Thus, the limit of tolerance during submaximal isometric contractions is influenced by absolute MVC only during exercise performed above ET, which seems to be explained by differences on both ET (expressed as %MVC) and IET values. [ABSTRACT FROM AUTHOR]
    • Abstract:
      Cette étude a pour objectif de vérifier les hypothèses selon lesquelles le moment de force à la fin du test (« ET », exprimé en % de la contraction maximale volontaire, « MVC ») est plus élevé chez les fléchisseurs plantaires (« PF ») comparativement aux extenseurs du genou (« KE ») alors que l'impulsion au-dessus d'ET (« IET ») est plus élevée chez les KE comparativement aux PF. En conséquence, on s'attend à ce que la tolérance à l'effort des KE soit plus élevée que celle des PF au cours d'un exercice effectué au-dessus d'ET. On demande à 40 hommes dont on a évalué la MVC d'effectuer deux tests de 5 min à fond de train afin de déterminer ET et IET. Onze participants effectuent en outre 4 tests isométriques intermittents à ET + 5 % et ET - 5 % jusqu'à épuisement et effectuent aussi un test des KE à l'intensité d'effort (% MVC) correspondant à ET + 5 % de PF. IET (7243,2 ± 1942,9 vs 3357,4 ± 1132,3 N·m·s) et ET (84,4 ± 24,8 vs 73,9 ± 19,5 N·m) sont significativement plus faibles chez PF comparativement aux KE. La tolérance à l'effort est significativement plus grande chez PF (300,7 ± 156,7 s) comparativement à KE (156,7 ± 104,3 s) à un même % MVC (∼ 60 %) et significativement plus petite chez PF (300,7 ± 156,7 s) comparativement à KE (697,0 ± 243,7 s) dans la condition ET + 5 %. Toutefois, on ne note pas de différence significative dans la condition ET - 5 % (KE = 1030,2 ± 495,4 s vs PF = 1028,3 ± 514,4 s). Ainsi, la limite de la tolérance au cours de contractions isométriques sous-maximales est influencée par la MVC absolue seulement au cours d'un exercice effectué au-dessus d'ET ; ce phénomène serait dû aux différences de valeurs d'ET (exprimé en % MVC) et d'IET. [Traduit par la Rédaction] [ABSTRACT FROM AUTHOR]
    • Abstract:
      Copyright of Applied Physiology, Nutrition & Metabolism is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
    • Author Affiliations:
      1Human Performance Laboratory, São Paulo State University (UNESP), Av. 24A, 1515, Bela Vista, CEP - 13506-900, Rio Claro, SP., Brazil.
    • ISSN:
      1715-5312
    • Accession Number:
      10.1139/apnm-2017-0381
    • Accession Number:
      127615128
  • Citations
    • ABNT:
      ABDALLA, L. H. P. et al. Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups. Applied Physiology, Nutrition & Metabolism, [s. l.], v. 43, n. 2, p. 174–179, 2018. DOI 10.1139/apnm-2017-0381. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=127615128&custid=s8280428. Acesso em: 29 maio. 2020.
    • AMA:
      Abdalla LHP, Denadai BS, Bassan NM, Greco CC. Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups. Applied Physiology, Nutrition & Metabolism. 2018;43(2):174-179. doi:10.1139/apnm-2017-0381.
    • APA:
      Abdalla, L. H. P., Denadai, B. S., Bassan, N. M., & Greco, C. C. (2018). Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups. Applied Physiology, Nutrition & Metabolism, 43(2), 174–179. https://doi.org/10.1139/apnm-2017-0381
    • Chicago/Turabian: Author-Date:
      Abdalla, Leonardo Henrique Perinotto, Benedito Sérgio Denadai, Natália Menezes Bassan, and Camila Coelho Greco. 2018. “Exercise Tolerance during Muscle Contractions below and above the Critical Torque in Different Muscle Groups.” Applied Physiology, Nutrition & Metabolism 43 (2): 174–79. doi:10.1139/apnm-2017-0381.
    • Harvard:
      Abdalla, L. H. P. et al. (2018) ‘Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups’, Applied Physiology, Nutrition & Metabolism, 43(2), pp. 174–179. doi: 10.1139/apnm-2017-0381.
    • Harvard: Australian:
      Abdalla, LHP, Denadai, BS, Bassan, NM & Greco, CC 2018, ‘Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups’, Applied Physiology, Nutrition & Metabolism, vol. 43, no. 2, pp. 174–179, viewed 29 May 2020, .
    • MLA:
      Abdalla, Leonardo Henrique Perinotto, et al. “Exercise Tolerance during Muscle Contractions below and above the Critical Torque in Different Muscle Groups.” Applied Physiology, Nutrition & Metabolism, vol. 43, no. 2, Feb. 2018, pp. 174–179. EBSCOhost, doi:10.1139/apnm-2017-0381.
    • Chicago/Turabian: Humanities:
      Abdalla, Leonardo Henrique Perinotto, Benedito Sérgio Denadai, Natália Menezes Bassan, and Camila Coelho Greco. “Exercise Tolerance during Muscle Contractions below and above the Critical Torque in Different Muscle Groups.” Applied Physiology, Nutrition & Metabolism 43, no. 2 (February 2018): 174–79. doi:10.1139/apnm-2017-0381.
    • Vancouver/ICMJE:
      Abdalla LHP, Denadai BS, Bassan NM, Greco CC. Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups. Applied Physiology, Nutrition & Metabolism [Internet]. 2018 Feb [cited 2020 May 29];43(2):174–9. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=127615128&custid=s8280428