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. 2017 May;58(3):644-649.
doi: 10.3349/ymj.2017.58.3.644.

Effect of Extracorporeal Shock Wave Therapy on Hamstring Tightness in Healthy Subjects: A Pilot Study

Yong Wook Kim  1 , Won Hyuk Chang  2 , Na Young Kim  1 , Jun Beom Kwon  1 , Sang Chul Lee  3
Affiliations

Effect of Extracorporeal Shock Wave Therapy on Hamstring Tightness in Healthy Subjects: A Pilot Study

Yong Wook Kim et al. Yonsei Med J. 2017 May.

Abstract

Purpose: To assess the effect of extracorporeal shock wave therapy (ESWT) for healthy participants with hamstring tightness.

Materials and methods: This study was performed at a university rehabilitation hospital. Twenty nine healthy adults with hamstring tightness were enrolled and randomly allocated into four groups (ESWT, stretching exercise, ESWT with stretching exercise, and control). The effects of individual treatments were compared by the finger-to-floor test and popliteal angle.

Results: The ESWT group, stretching exercise group and ESWT with stretching exercise group had decreased finger-to-floor distances and right popliteal angles immediately after intervention, compared with the control group (p<0.05). At 4 weeks after completion of the interventions, finger-to-floor distances and the right popliteal angle in only the ESWT with stretching exercise group showed a significant improvement, compared with the control group (p=0.008 and 0.023).

Conclusion: While ESWT and stretching both reduced hamstring tightness immediately after interventions, only ESWT with stretching exercise maintained the significantly improved relief of hamstring tightness significantly after 4 weeks.

Keywords: ESWT; hamstring tightness; spasticity; stretching.

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Conflict of interest statement

The authors have no financial conflicts of interest.

Figures

Fig. 1
Fig. 1. Flowchart of the study. ESWT, extracorporeal shock wave therapy.
Fig. 2
Fig. 2. Changes in assessments in each group. (A) Finger-to-floor test, (B) Right popliteal angle. *p<0.05, post-treatment vs. baseline. ESWT, extracorporeal shock wave therapy; T1, immediately after treatments; T2, at 4 weeks after treatments.
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