Research Article Open Access

Tensiomyographic Characteristics of Rectus Femoris after a Single Bout of Intense Exercise

Luis Carrasco Paez, Borja Sañudo Corrales, Moises de Hoyo Lora and Gabriela Ochiana

Abstract

Problem statement: It is not well known how local fatigue can impair the contractile properties of skeletal muscle, so the aim of this study was to determine the Tensiomyographic (TMG) characteristics of Rectus Femoris (RF) after a single bout of intense exercise. Approach: Twelve healthy male volunteers (mean±SEM; age, 24.16±0.62 years, height 172.02±1.21 cm, body mass 71.84±2.19 kg, BMI 24.42±0.70 kg m-1) were recruited. Results: In session 1, a graded exercise test on cycle ergometer was performed in order to determine subject’s maximal oxygen uptake (VO2max) and power at this key point (pVO2max). In a second testing session, TMG rest values were assessed and then all subjects carried out 2 min of cycling at pVO2max after which TMG analysis was applied again. The results showed subject’s VO2max values of 53.44±2.67 ml kg-1 min-1, reaching a mean pVO2max of 270.83±8.61 W. Maximal radial displacement (Dm) and time from the onset of electrical stimulus to 10% of Dm (Td) were significantly lower at post-test (from 7.577.57±0.92-4.37±0.67 mm; p = 0.01, for Dm and from 25.25±0.57-22.44±0.89 ms; p≤0.05, for Td). Conclusion/Recommendations: It can be concluded that a brief and intense exercise consisting in 2 min of cycling at PVO2max provokes a reduction in contractile properties of RF considering TMG parameters such as Dm and Td. More studies are needed to clarify the role of muscle fatigue on temporal TMG parameters.

Journal of Social Sciences
Volume 7 No. 3, 2011, 354-357

DOI: https://doi.org/10.3844/jssp.2011.354.357

Submitted On: 26 November 2010 Published On: 18 July 2011

How to Cite: Paez, L. C., Corrales, B. S., Lora, M. H. & Ochiana, G. (2011). Tensiomyographic Characteristics of Rectus Femoris after a Single Bout of Intense Exercise. Journal of Social Sciences, 7(3), 354-357. https://doi.org/10.3844/jssp.2011.354.357

  • 3,619 Views
  • 2,671 Downloads
  • 2 Citations

Download

Keywords

  • Intense exercise
  • Tensiomyography (TMG,)
  • maximal radial displacement
  • radial displacement
  • muscle’s belly
  • self-adhesive
  • contractile parameters
  • Rectus Femoris (RF)