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Kang YH, Ha WB, Geum JH, Woo H, Han YH, Park SH, Lee JH. Effect of Muscle Energy Technique on Hamstring Flexibility: Systematic Review and Meta-Analysis. Healthcare (Basel) 2023; 11:1089. [PMID: 37107922 PMCID: PMC10137847 DOI: 10.3390/healthcare11081089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/28/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Since 2005, there have been no systematic reviews on the effects of multiple manual therapies, including muscle energy technique (MET), on the hamstrings. Therefore, this systematic review aimed to provide clinical evidence for the effectiveness of the MET on hamstring flexibility. We queried 10 electronic databases (PubMed, EMBASE, The Cochrane Library, KISS, NDSL, KMBASE, KISTI, RISS, Dbpia, and OASIS) up to the end of March 2022. This study only included randomized controlled trials (RCTs) investigating the use of MET for the hamstring. The literature was organized using Endnote. Literature screening and data extraction were conducted by two researchers independently. The methodological quality of the included RCTs was evaluated using the Cochrane risk-of-bias tool 1.0, and the meta-analysis was performed using RevMan 5.4. In total, 949 patients from 19 RCTs were selected according to the inclusion criteria. During active knee extension tests, the efficacy between MET and other manipulations did not significantly differ. For sit and reach tests, MET groups had higher flexibility compared to stretching (MD = 1.69, 95% CI: 0.66 to 2.73, p = 0.001) and no treatment (MD = 2.02, 95% CI: 0.70 to 3.33, p = 0.003) groups. No significant differences were observed in the occurrence of adverse reactions. Overall, we found that MET is more efficacious for improving hamstring flexibility compared to stretching and having no treatment during sit and reach tests because it combines isometric contraction with stretching. Owing to clinical heterogeneity, uncertain risk of bias, and the small number of included studies, further high-quality studies should assess the effectiveness of MET.
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Affiliation(s)
- Yeh-Hyun Kang
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, 460 Iksan-daero, Iksan 54538, Republic of Korea
| | - Won-Bae Ha
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, 460 Iksan-daero, Iksan 54538, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, 895 Muwang-ro, Iksan 54538, Republic of Korea
| | - Ji-Hye Geum
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, 460 Iksan-daero, Iksan 54538, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, 895 Muwang-ro, Iksan 54538, Republic of Korea
| | - Hyeonjun Woo
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, 460 Iksan-daero, Iksan 54538, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, 895 Muwang-ro, Iksan 54538, Republic of Korea
| | - Yun-Hee Han
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, 460 Iksan-daero, Iksan 54538, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, 895 Muwang-ro, Iksan 54538, Republic of Korea
| | - Shin-Hyeok Park
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, 460 Iksan-daero, Iksan 54538, Republic of Korea
- Department of Acupuncture and Moxibustion Medicine, College of Korean Medicine, Won-Kwang University, 895 Muwang-ro, Iksan 54538, Republic of Korea
| | - Jung-Han Lee
- Chuna Manual Medicine Research Group, College of Korean Medicine, Won-Kwang University, 460 Iksan-daero, Iksan 54538, Republic of Korea
- Department of Korean Medicine Rehabilitation, College of Korean Medicine, Won-Kwang University, 895 Muwang-ro, Iksan 54538, Republic of Korea
- Research Center of Traditional Korean Medicine, College of Korean Medicine, Won-Kwang University, 895 Muwang-ro, Iksan 54538, Republic of Korea
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