The ExtRA Capacity Test: Reliability, validity and normative data of a new clinical tool for assessing shoulder muscle performance.

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Title: The ExtRA Capacity Test: Reliability, validity and normative data of a new clinical tool for assessing shoulder muscle performance.
Authors: Ford H; Department of Sport, Health and Exercise Sciences, College of Health, Medicine and Life Sciences, Brunel University of London, Kingston Lane, Uxbridge, Middlesex, United Kingdom. Electronic address: Harry.Ford@brunel.ac.uk., Lewis J; Central London Community Healthcare National Health Service Trust, Therapy Department, Finchley Memorial Hospital, Granville Road, London, United Kingdom., Tyros V; PCRF Pirbright, Physiotherapy Department, Pirbright, United Kingdom., Low DC; Department of Sport, Health and Exercise Sciences, College of Health, Medicine and Life Sciences, Brunel University of London, Kingston Lane, Uxbridge, Middlesex, United Kingdom., Bateman WR; Surrey Physio, 409 London Road, Mitcham, United Kingdom., Lee Y; Brunel Medical School, College of Health, Medicine and Life Sciences, Brunel University of London, Kingston Lane, Uxbridge, Middlesex, United Kingdom., Sakadasariya R; Department of Sport, Health and Exercise Sciences, College of Health, Medicine and Life Sciences, Brunel University of London, Kingston Lane, Uxbridge, Middlesex, United Kingdom., Rex J; Department of Sport, Health and Exercise Sciences, College of Health, Medicine and Life Sciences, Brunel University of London, Kingston Lane, Uxbridge, Middlesex, United Kingdom., Oldfield M; School of Mechanical Engineering Sciences, University of Surrey, Guildford, Surrey, United Kingdom., Davare M; Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom., Shaheen AF; Department of Sport, Health and Exercise Sciences, College of Health, Medicine and Life Sciences, Brunel University of London, Kingston Lane, Uxbridge, Middlesex, United Kingdom. Electronic address: aliah.shaheen@brunel.ac.uk.
Source: Physiotherapy [Physiotherapy] 2026 Jun; Vol. 131, pp. 101868. Date of Electronic Publication: 2025 Dec 11.
Publication Type: Journal Article; Observational Study; Validation Study
Journal Info: Publisher: Chartered Society of Physiotherapy London Country of Publication: England NLM ID: 0401223 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-1465 (Electronic) Linking ISSN: 00319406 NLM ISO Abbreviation: Physiotherapy Subsets: MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:1873-1465
DOI:10.1016/j.physio.2025.101868