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J Back Musculoskelet Rehabil. 2017;30(2):241-246. doi: 10.3233/BMR-160740.

Acute effect of different time periods of passive static stretching on the hamstring flexibility.

Abstract

BACKGROUND:

Several factors are associated with the presence of chronic low back pain; one of them is the flexibility of the hamstring muscles that influences the posture of the pelvic spine.

OBJECTIVE:

Investigate the influence of two different time periods of passive static stretching on the flexibility of the hamstring.

METHODS:

Forty-six physiotherapy students were divided into two groups performing stretching exercises: 30 s and 60 s duration. The collections consisted of: (1) pre-test: evaluation of the flexibility of the hip and knee, using a manual goniometer by means of the following tests: Straight Leg Raise Test (SLR), Passive Hip Flexion Test (PHFT) and Modified Knee Extension Test (MKET), (2) intervention: stretching with different runtimes, (3) post-test: reappraisal of flexibility, conducted immediately after the intervention.

RESULTS:

Significant difference was observed intra groups, group that did stretching exercises lasting 30 seconds (G30) (SLR p = 0.000. PHFT p = 0.003 and MKET p = 0.000) and group that did stretching exercises lasting 60 seconds (G60) (SLR p = 0.000. PHFT p = 0.001 and MKET p = 0.002). Comparing the groups, no significant difference was found (SLR p = 0.307; PHFT p = 0.904; MKET p = 0.132).

CONCLUSION:

Thus it can be inferred that 30 seconds are sufficient for increased flexibility of young women. Therefore the time-treatment sessions can be optimized. Only the acute effect of stretching was observed; further investigation of the long-term effect is required.

KEYWORDS:

Lower extremity; muscle stretching exercises; range of motion; rehabilitation

PMID:
27472859
DOI:
10.3233/BMR-160740
[Indexed for MEDLINE]

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