Relationship between Reactive Strength and Leg Stiffness at Submaximal Velocity: Effects of Age on Distance Runners

Autor: Luis E. Roche-Seruendo, Felipe García-Pinillos, Alberto Rubio-Peirotén, Antonio Cartón-Llorente, Diego Jaén-Carrillo, Demetrio Lozano-Jarque
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Environmental Research and Public Health, Vol 18, Iss 6866, p 6866 (2021)
R-USJ: Repositorio Institucional de la Universidad San Jorge
Universidad San Jorge (USJ)
Digibug. Repositorio Institucional de la Universidad de Granada
instname
International Journal of Environmental Research and Public Health
Volume 18
Issue 13
Digibug: Repositorio Institucional de la Universidad de Granada
Universidad de Granada (UGR)
ISSN: 1660-4601
DOI: 10.3390/ijerph18136866
Popis: Background: Musculotendinous reactive strength is a key factor for the utilization of elastic energy in sporting activities such as running. AIM: To evaluate the relationship between musculotendinous reactive strength and lower-limb stiffness during running as well as to identify age-related differences in both variables. Methods: Fifty-nine amateur endurance runners performed three 20-cm drop jumps and a constant 3-min easy run on a motorized treadmill. Reactive strength index and dynamic lower-limb stiffness were calculated with a photoelectric cell system by jumping and running, respectively. Additionally, sit to stand difference in plantar arch height was assessed as a static lower-limb stiffness measure. The cluster analysis allows the comparison between younger and older runners. Results: No significant correlations were found between jumping reactive strength and running lower-limb stiffness. The younger group performed better at drop jumps (p = 0.023, ES = 0.82), whereas higher-but-no-significant results were found for reactive strength index and stiffness-related metrics. Conclusions: Musculotendinous vertical reactiveness may not be transferred to combined vertical and horizontal movements such as running.
Databáze: OpenAIRE