http://www.ncbi.nlm.nih.gov/pubmed/27151602
Tatsukawa DE Freitas ST1, DE Carvalho Abreu EM1, Dos Reis MC1, DE Souza Cunha B1, Souza Moreira Prianti T1, Pupio Silva Lima F1, Oliveira Lima M1.
Abstract
Spasticity
is one of the main causes of contracture, muscle weakness and
subsequent functional incapacity. The passive static stretching can be
included as having the purpose of increasing musculoskeletal
flexibility, however, it also can influence the muscle torque. The
objective is to verify the immediate effect of passive static stretching
in the muscle strength of healthy and those who present spastic
hemiparesis. There were assessed 20 subjects, 10 spastic hemiparetic
(EG) and 10 healthy individuals (CG), including both sexes, aged between
22 and 78 years. The torque of extensor muscles of the knee was
analyzed using isokinetic dynamometer. Results have shown that EG has
less muscle torque compared to CG ( p < 0.01). In addition, EG
presented a decrease in significance of muscle torque after stretching (
p < 0.05), however, it has not shown significant alteration in
muscle torque of CG after performing the program that was prescribed.
Immediately after the passive stretch, a significant torque decrease can
be seen in hypertonic muscle; it is believed that this reduction may be
associated with the physiological overlap between actin and myosin
filaments and so preventing the muscle to develop a maximum contraction.
- PMID:
- 27151602
- [PubMed - in process]
A great rationale for therapists to stop being afraid to ask stroke survivors to use a spastic muscle because they fear it will overpower other muscles.
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