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KMID : 1142420180160030441
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PNF and Movement
2018 Volume.16 No. 3 p.441 ~ p.449
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The Impact of PNF Leg Patterns Hallux Abduction on the Intrinsic Foot Muscles of Participants with Hallux Valgus
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Kim Byeong-Jo
Park Du-Jin
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Abstract
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Purpose: This study aimed to compare the impact of proprioceptive neuromuscular facilitation leg patterns emphasizing hallux abduction (PNF-LPHA) on the intrinsic foot muscles of participants with hallux valgus (HV) using the toe-spread-out exercise (TSO).
Methods: The present study recruited 12 individuals with HV. All the participants voluntarily agreed to participate in the study after hearing explanations of its purpose and process. All participants performed the TSO, PNF-LPHA 1, and PNF-LPHA 2. The participants’ abductor hallucis (AbH), adductor hallucis (AdH), extensor hallucis longus (EHL), and flexor hallucis brevis (FHB) activity was measured, and the ratio of AbH:AdH was measured during the three interventions using electromyography. Additionally, the participants’ AbH thickness was measured by ultrasonography. An intraclass correlation coefficient (ICC) was used to verify the intra-rater reliability of ultrasonography at rest and during contraction.
Results: The intra-rater reliability was excellent at rest and during contraction (ICC3,1=0.90 and ICC3,1=0.83, respectively). There were no statistically significant differences in the activity of the AbH, the ratio of AbH: AdH, and the thickness of AbH between the TSO and PNF-LPHA2 groups. Additionally, EHL activity was significantly higher in the PNF-LPHA2 group than in the TSOgroup.
Conclusion: PNF-LPHA 2 can be recommended as a method to optimize AbH and EHL activity, the ratio of AbH:AdH, and the thickness of AbH in individuals with HV.
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KEYWORD
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Hallux valgus, Proprioceptive neuromuscular facilitation, Toe spread out, Intrinsic muscle
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