Viscoelastic stress relaxation in the hamstrings before and after a 10-week stretching program.

Autor: Peixoto GH; Laboratory of Biomechanics, Center of Sports Excellence, Federal University of Minas Gerais, Avenida Antônio Carlos, 6627, Campus Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil., Andrade AG, Menzel HJ, Araújo SR, Pertence AE, Chagas MH
Jazyk: angličtina
Zdroj: Muscle & nerve [Muscle Nerve] 2015 May; Vol. 51 (5), pp. 761-4. Date of Electronic Publication: 2015 Mar 27.
DOI: 10.1002/mus.24593
Abstrakt: Introduction: We investigated the viscoelastic stress relaxation response before and after a 10-week hamstrings static stretch program.
Methods: The maximal range of motion (ROMmax ) and maximal torque (Torquemax ) were assessed before and after a 10-week stretching program. Six 30-s static stretches at a predetermined torque were performed, and the relative change in stress relaxation was examined.
Results: ROMmax and Torquemax increased by 53% and 82%, respectively (P < 0.001). The relative stress relaxation (RSR) decreased significantly for repetition 1 when comparing the pretest (25%) and posttest (21%) values (P = 0.003). A significant decrease was also observed for repetitions 2 and 3 (P < 0.014), with no significant difference in repetitions 4-6 (P > 0.056).
Conclusions: Individuals who participated in a 10-week hamstrings passive-static stretch program had a reduced RSR response. A higher stretch intensity or longer duration may be necessary to achieve RSRs similar to those reported before the stretch program.
(© 2015 Wiley Periodicals, Inc.)
Databáze: MEDLINE
Externí odkaz: