Evaluation of the Isometric and Dynamic Rates of Force Development in Multi-Joint Muscle Actions
Article (PDF)
Authors
Klimentini Martinopoulou, Olyvia Donti1, William A. Sands, Gerasimos Terzis, Gregory C. Bogdanis
Abstract
The rate of force development (RFD) in the isometric leg press (ILP), the countermovement jump (CMJ) and the squat jump (SJ) were examined in twenty-three (9 females) team sport athletes aged 21-24 years. Peak force (Fpeak), peak rate of force development (RFDpeak) and RFD at different time epochs (0-50, 50-100, 100-150, 150-200) were calculated from the force-time curve, as well as CMJ and SJ height and the center of mass displacement. RFDpeak, RFD at 0-50, 50-100 and 100-150 ms and Fpeak were similar between the CMJ and the SJ (p = 0.26 to 0.99). Furthermore, RFD0-50 ms was similar between the ILP, the CMJ, and the SJ (p = 0.99 to 0.57). Higher values were observed in the ILP compared with the CMJ and the SJ in RFD50-100 ms and RFD100-150 ms (p < 0.001) and these differences were maintained even when RFD was scaled to body mass. The higher RFD normalized to Fpeak was attained at the 50-100 ms time interval with no differences between the ILP, CMJ and SJ and between males and females. These results suggest that the ability to exert rapid force is similar between the CMJ and the SJ, irrespective of the type of muscle action. Furthermore, RFD normalized to Fpeak is a muscle-force independent index of explosive force production, facilitating comparisons between individuals with different levels of muscle strength. The similarities between the CMJ and the SJ in RFDpeak, Fpeak, and RFD at different time epochs may imply that these types of jumps could be used interchangeably to assess explosive lower limb performance.
DOI
DOI: 10.2478/hukin-2021-0130
Citation
APA
Martinopoulou, K., Donti, O., Sands, W. A., Terzis, G., Bogdanis, G. C. (2022). Evaluation of the Isometric and Dynamic Rates of Force Development in Multi-Joint Muscle Actions. Journal of Human Kinetics, 81, 135-148. https://doi.org/10.2478/hukin-2021-0130
Harvard Martinopoulou, K., Donti, O., Sands, W. A., Terzis, G., and Bogdanis, G. C. (2022). Evaluation of the Isometric and Dynamic Rates of Force Development in Multi-Joint Muscle Actions. Journal of Human Kinetics, 81, pp.135-148. https://doi.org/10.2478/hukin-2021-0130
MLA Martinopoulou, Klimentini et al. “Evaluation of the Isometric and Dynamic Rates of Force Development in Multi-Joint Muscle Actions.” Journal of Human Kinetics, vol. 81, 2022, pp. 135-148. doi:10.2478/hukin-2021-0130.
Vancouver Martinopoulou K, Donti O, Sands WA, Terzis G, Bogdanis GC. Evaluation of the Isometric and Dynamic Rates of Force Development in Multi-Joint Muscle Actions. Journal of Human Kinetics. 2022;81:135-148. https://doi.org/10.2478/hukin-2021-0130
Key words
isometric strength, peak force, power, force time curve, vertical jump