Journal
BMJ MILITARY HEALTH
Volume 168, Issue 4, Pages 279-285Publisher
BMJ PUBLISHING GROUP
DOI: 10.1136/bmjmilitary-2021-001950
Keywords
rehabilitation medicine; sports medicine; hip
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This study evaluated the acceptability of the IMTP test as a measure of functional strength with military personnel undergoing residential hip pain rehabilitation and compared the results with the updated Army physical employment standards. The results showed full patient and clinician acceptability to the IMTP testing procedures, with minimal changes in pain scores. However, further research is needed to determine if the current British Army PES can be used as a criterion standard in Defence Rehabilitation and to develop clinically relevant patient-specific IMTP score criteria.
Introduction Objective outcome measures that can quantify the force generating capacity of the lower limb are required to allow clinicians to accurately measure functional status and treatment adaptations over time. The aim of this prospective observational cohort study is to: (1) evaluate the acceptability of the isometric mid-thigh pull (IMTP) test as a measure of functional strength with military personnel undergoing residential hip pain rehabilitation; (2) compare the peak force values recorded against the updated Army physical employment standards (PES) assessment criteria and (3) assess if the minimum PES required of military personnel has the potential to inform clinical decision making and return to duty criteria within UK Defence Rehabilitation. Methods Acceptability was assessed against patient's adherence to the testing procedures and test burden. Clinician acceptability was assessed against ease of administration and safety of test procedure. Hip pain was recorded before, immediately following and 1 hour after testing. Net peak force was recorded using portable force plates. Results Full patient and clinician acceptability to IMTP testing procedures were demonstrated. Minimal changes in visual analogue scale (VAS) pain scores were demonstrated between baseline values at rest and follow-up. Despite being medically downgraded and functionally compromised due to chronic hip pain, 100% of patients met the PES expected on entry to the British Army and 79% met the PES expected at the end of basic training. Conclusion The IMTP provides rehabilitation clinicians with an objective quantifiable measure of maximum muscle strength that can be used early in the rehabilitation care pathway. Based on our finding, it is unclear if the current British Army PES can be used as a criterion standard in Defence Rehabilitation. Therefore, further research focused on generating clinically relevant patient-specific IMTP score criteria, with a larger sample of diverse diagnostic sub-groups is required.
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