A Pilot Study on the Influence of Diaphragmatic Function on Iliopsoas Muscle Activity in Individuals with Chronic Ankle Instability.

Takumi Jiroumaru, Shun Nomura, Yutaro Hyodo, Michio Wachi, Junko Ochi, Nobuko Shichiri, Takamitsu Fujikawa

Abstract read

In one paragraph

Article in Muscles (Basel, Switzerland), 2025. 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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0citing papers in PubMed

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5 · Who and what money

Authors and funding

7 authors.

Takumi JiroumaruDepartment of Physical Therapy, School of Health Sciences, Bukkyo University, Kyoto 604-8418, Japan.

Shun NomuraDepartment of Rehabilitation, Kanazawa Orthopaedic and Sports Medicine Clinic, Ritto 520-3016, Japan.

Yutaro HyodoDepartment of Physical Therapy, School of Health Sciences, Bukkyo University, Kyoto 604-8418, Japan.

Michio WachiDepartment of Physical Therapy, School of Health Sciences, Bukkyo University, Kyoto 604-8418, Japan.

Junko OchiDepartment of Physical Therapy, School of Health Sciences, Bukkyo University, Kyoto 604-8418, Japan.

Nobuko ShichiriDepartment of Occupational Therapy, School of Health Sciences, Bukkyo University, Kyoto 604-8418, Japan.

Takamitsu FujikawaDepartment of Physical Therapy, School of Health Sciences, Bukkyo University, Kyoto 604-8418, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study examined the impact of different breath-holding conditions on iliopsoas and other hip flexor muscle activity in individuals with chronic ankle instability (CAI). It has been hypothesised that impaired diaphragmatic function influences iliopsoas activation, potentially contributing to motor control deficits in patients with CAI. Eleven adults with a history of chronic ankle sprain participated in this study. Maximal isometric hip flexion was assessed under three breath-holding conditions: end-expiration, end-inspiration, and the intermediate state. Surface electromyography was used to record the muscle activity of the iliopsoas, rectus femoris, sartorius, and tensor fasciae latae, while the peak hip flexion torque was measured using an isokinetic dynamometer. Under the end-inspiration condition, iliopsoas activity on the affected side was significantly lower than that on the control side (

Indexed as

breath-holding conditionschronic ankle instabilitydiaphragmhip flexion torqueiliopsoassurface electromyography

Identifiers

PMID40757559

DOI10.3390/muscles4020016

PMCPMC12195938

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.