SynthesisPhysiotherapy research international : the journal for researchers and clinicians in physical therapy2026
Effect of Hamstring Stretching on Pain at Masseter Muscle and Mouth Opening: A Systematic Review.
Synthesis in Physiotherapy research international : the journal for researchers and clinicians in physical therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
4 authors.
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Abstract
backgroundHamstring flexibility can potentially affect the mobility and function of remote musculoskeletal areas, including the cervical spine and temporomandibular joint (TMJ), thereby increasing tension along the myofascial chain and potentially reducing mouth opening, contributing to orofacial discomfort. This review aims to inform clinical practice by exploring the integrated impact of these interventions within the framework of neuro-myofascial connectivity.
methodsA comprehensive search was performed across PubMed, Scopus, Web of Science, and PEDro databases spanning the period from the year 2006-2025, restricted to studies published in the English language. Keywords and MeSH terms corresponding to hamstring stretching, mouth opening and Temporomandibular Joint (TMJ) mobility were used incorporating Boolean operators. Randomized control trials and experimental studies investigating acute or short term effects of hamstring stretching on Temporomandibular Joint (TMJ) pain and mouth opening were included.
resultsThe preliminary results indicate that hamstring stretching can result in temporary improvements in pressure pain threshold and mouth opening; however, the results should be interpreted with caution and the number of the RCTs is small and heterogeneous.
conclusionThe findings support the possibility of myofascial and neural interconnections between the posterior chain and masticatory system; however, the current evidence is insufficient to establish definitive mechanistic conclusions.
trial registrationPROSPERO number: CRD420251173297.
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