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FIBER TYPE COMPOSITION AND RATE OF FORCE DEVELOPMENT IN ENDURANCE- AND RESISTANCE-TRAINED INDIVIDUALS.

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  • معلومة اضافية
    • Author-Supplied Keywords:
      endurance runners
      muscle power
      resistance training
      skeletal muscle morphology
    • Abstract:
      The purpose of the study was to investigate the relationship between muscle fiber composition and the rate of force development (RFD) in well-trained individuals with different training background. Thirty-eight young men with different training background participated: 9 endurance runners, 10 power-trained individuals, 9 strength-trained individuals, and 10 sedentary individuals. They performed maximal isometric leg press for the measurement of RFD. Body composition (dual x-ray absorptiometry) and vastus lateralis fiber type composition were also evaluated. When all participants were examined as a group, moderate correlations were found between the percent of type II muscle fibers and RFD between 100 and 600 milliseconds (r = 0.321-0.497; p ≤ 0.05). The correlation coefficients were higher for the cross-sectional area (CSA) and the %CSA of type II and IIx muscle fibers (r = 0.599-0.847; p < 0.001). For the power group, RFD up to 250 milliseconds highly correlated with % type IIx muscle fibers and type IIx fiber CSA (r = 0.670-0.826; p ≤ 0.05), as well as with %CSA of type IIx fibers (r = 0.714-0.975; p ≤ 0.05). Significant correlations were found between the relative RFD (⋅kg-1 lower extremities lean mass) and CSA-%CSA of type II and IIx fibers for the power group (r = 0.676-0.903; p ≤ 0.05). No significant correlations were found between muscle morphology and RFD for the other groups. In conclusion, the present data suggest that there is a strong link between the type IIx muscle fibers and early RFD and relative RFD in power-trained participants. Type II fibers seem to be moderately linked with RFD in non-power-trained individuals. [ABSTRACT FROM AUTHOR]
    • Abstract:
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    • Author Affiliations:
      1Athletics Laboratory, School of Physical Education & Sports Science, National and Kapodistrian University of Athens, Zografou, Greece
      2A' Neurology Clinic, Aiginition Hospital, Medical School, National and Kapodistrian University of Athens, Zografou, Greece
      3Department of Nutrition and Dietetics, School of Health Science & Education, Harokopio University of Athens, Zografou, Greece
    • ISSN:
      1064-8011
    • Accession Number:
      10.1519/jsc.0000000000002150
    • Accession Number:
      139085158
  • Citations
    • ABNT:
      METHENITIS, S. et al. Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals. Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins), [s. l.], v. 33, n. 9, p. 2388–2397, 2019. DOI 10.1519/jsc.0000000000002150. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=139085158&custid=s8280428. Acesso em: 10 jul. 2020.
    • AMA:
      METHENITIS S, SPENGOS K, ZARAS N, et al. Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals. Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins). 2019;33(9):2388-2397. doi:10.1519/jsc.0000000000002150.
    • AMA11:
      METHENITIS S, SPENGOS K, ZARAS N, et al. Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals. Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins). 2019;33(9):2388-2397. doi:10.1519/jsc.0000000000002150
    • APA:
      METHENITIS, S., SPENGOS, K., ZARAS, N., ANGELIKI-NIKOLETTA, S., PAPADIMAS, G., KARAMPATSOS, G., ARNAOUTIS, G., & TERZIS, G. (2019). Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals. Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins), 33(9), 2388–2397. https://doi.org/10.1519/jsc.0000000000002150
    • Chicago/Turabian: Author-Date:
      METHENITIS, SPYRIDON, KONSTANTINOS SPENGOS, NIKOLAOS ZARAS, STASINAKI ANGELIKI-NIKOLETTA, GIORGOS PAPADIMAS, GIORGOS KARAMPATSOS, GIANNIS ARNAOUTIS, and GERASIMOS TERZIS. 2019. “Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals.” Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) 33 (9): 2388–97. doi:10.1519/jsc.0000000000002150.
    • Harvard:
      METHENITIS, S. et al. (2019) ‘Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals’, Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins), 33(9), pp. 2388–2397. doi: 10.1519/jsc.0000000000002150.
    • Harvard: Australian:
      METHENITIS, S, SPENGOS, K, ZARAS, N, ANGELIKI-NIKOLETTA, S, PAPADIMAS, G, KARAMPATSOS, G, ARNAOUTIS, G & TERZIS, G 2019, ‘Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals’, Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins), vol. 33, no. 9, pp. 2388–2397, viewed 10 July 2020, .
    • MLA:
      METHENITIS, SPYRIDON, et al. “Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals.” Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins), vol. 33, no. 9, Sept. 2019, pp. 2388–2397. EBSCOhost, doi:10.1519/jsc.0000000000002150.
    • Chicago/Turabian: Humanities:
      METHENITIS, SPYRIDON, KONSTANTINOS SPENGOS, NIKOLAOS ZARAS, STASINAKI ANGELIKI-NIKOLETTA, GIORGOS PAPADIMAS, GIORGOS KARAMPATSOS, GIANNIS ARNAOUTIS, and GERASIMOS TERZIS. “Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals.” Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) 33, no. 9 (September 2019): 2388–97. doi:10.1519/jsc.0000000000002150.
    • Vancouver/ICMJE:
      METHENITIS S, SPENGOS K, ZARAS N, ANGELIKI-NIKOLETTA S, PAPADIMAS G, KARAMPATSOS G, et al. Fiber Type Composition and Rate of Force Development in Endurance- and Resistance-Trained Individuals. Journal of Strength & Conditioning Research (Lippincott Williams & Wilkins) [Internet]. 2019 Sep [cited 2020 Jul 10];33(9):2388–97. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asn&AN=139085158&custid=s8280428