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Effects of low and high frequency transcutaneous electrical nerve stimulation on the intensity and threshold of pain during the stretching of hamstring muscle
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Hamid Reza Bokayyan   , Amir Hooshang Bakhtyari , Mohammad Ardestani , Milad Iravani |
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Abstract: (6083 Views) |
| Introduction: Transcutaneous electrical nerve stimulation
(TENS) has been very useful in controlling various pains such of muscle
stretching pain. In this study, we investigated the effects of high and low
frequency TENS on pain reduction during muscle stretching. Materials and Methods: 60 male students with tight hamstrings were
assessed and randomly assigned into one of the three experimental groups (n =
20 in each group): 1) high TENS, 2) low TENS, 3) and control. In the first
session all groups received static hamstring stretching exercise technique,
while both experimental groups received combined stretching exercises and TENS
in the second session (one week later). The control group received only stretching
exercises. During both sessions, pain was measured by VAS and pain threshold
was evaluated by goniometer. Results: Pain threshold increased significantly
(P=0.001) in low TENS group, whereas the high TENS and control groups showed no
significant increase. All experimental groups failed to show any significant
changes in pain intensity. Conclusion: The results of this study showed that low-frequency
TENS may increase the pain threshold during static stretching of the hamstring
muscle. These findings may indicate the clinical value of low-TENS to perform
static stretching techniques on hamstring muscles tightness |
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| Keywords: Transcutaneous electic nerve stimulation, Pain threshold, Muscle stretching exercises, Skeletal muscle |
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Full-Text [PDF 634 kb]
(1662 Downloads)
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Type of Study: Research |
Subject:
General
Received: 2013/08/26 | Accepted: 2014/05/28 | Published: 2014/09/11
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