Michael O Harris-Love1, Joseph A Shrader, Todd E Davenport, Galen Joe, Goran Rakocevic, Beverly McElroy, Marinos Dalakas. 1. M.O. Harris-Love, PT, DSc, Research Service/Geriatrics and Extended Care Service, Washington DC Veterans Affairs Medical Center, Department of Veterans Affairs, Washington, DC; Department of Exercise Science, School of Public Health and Health Services, George Washington University, Washington, DC; and Rehabilitation Medicine Department, National Institutes of Health, Bethesda, Maryland. Mailing address: Research Service/Geriatrics and Extended Care Service, Washington DC Veterans Affairs Medical Center, Department of Veterans Affairs, 50 Irving St NW, Room 11G, Washington, DC 20422.
Abstract
BACKGROUND: Repeated heel raises have been proposed as a method of ankle plantar-flexor strength testing that circumvents the limitations of manual muscle testing (MMT). OBJECTIVE: The study objective was to examine the relationships among ankle plantar-flexion isometric maximum voluntary contraction (MVC), repeated single-limb heel raises (SLHRs), and MMT in people with myositis. DESIGN: This was a cross-sectional study with a between-group design. The ability to complete 1 SLHR determined group assignment (SLHR group, n=24; no-SLHR group, n=19). METHODS: Forty-three participants with myositis (13 women; median age=64.9 years) participated. Outcome measures included MVC, predicted MVC, Kendall MMT, and Daniels-Worthingham MMT. RESULTS: The Kendall MMT was unable to detect significant ankle plantar-flexor weakness established by quantitative methods and was unable to discriminate between participants who could and those who could not perform the SLHR task. Ankle plantar-flexion MVC was not associated with the number of heel-raise repetitions in the SLHR group (pseudo R(2)=.13). No significant relationship was observed between MVC values and MMT grades in the SLHR and no-SLHR groups. However, a moderate relationship between MVC values and MMT grades was evident in a combined-group analysis (ρ=.50-.67). LIMITATIONS: The lower half of both MMT grading scales was not represented in the study despite the profound weakness of the participants. CONCLUSIONS: Both Kendall MMT and Daniels-Worthingham MMT had limited utility in the assessment of ankle plantar-flexor strength. Repeated SLHRs should not be used as a proxy measure of ankle plantar-flexion MVC in people with myositis.
BACKGROUND: Repeated heel raises have been proposed as a method of ankle plantar-flexor strength testing that circumvents the limitations of manual muscle testing (MMT). OBJECTIVE: The study objective was to examine the relationships among ankle plantar-flexion isometric maximum voluntary contraction (MVC), repeated single-limb heel raises (SLHRs), and MMT in people with myositis. DESIGN: This was a cross-sectional study with a between-group design. The ability to complete 1 SLHR determined group assignment (SLHR group, n=24; no-SLHR group, n=19). METHODS: Forty-three participants with myositis (13 women; median age=64.9 years) participated. Outcome measures included MVC, predicted MVC, Kendall MMT, and Daniels-Worthingham MMT. RESULTS: The Kendall MMT was unable to detect significant ankle plantar-flexor weakness established by quantitative methods and was unable to discriminate between participants who could and those who could not perform the SLHR task. Ankle plantar-flexion MVC was not associated with the number of heel-raise repetitions in the SLHR group (pseudo R(2)=.13). No significant relationship was observed between MVC values and MMT grades in the SLHR and no-SLHR groups. However, a moderate relationship between MVC values and MMT grades was evident in a combined-group analysis (ρ=.50-.67). LIMITATIONS: The lower half of both MMT grading scales was not represented in the study despite the profound weakness of the participants. CONCLUSIONS: Both Kendall MMT and Daniels-Worthingham MMT had limited utility in the assessment of ankle plantar-flexor strength. Repeated SLHRs should not be used as a proxy measure of ankle plantar-flexion MVC in people with myositis.
Authors: Lisa G Rider; Edward H Giannini; Michael Harris-Love; Galen Joe; David Isenberg; Clarissa Pilkington; Peter A Lachenbruch; Frederick W Miller Journal: J Rheumatol Date: 2003-03 Impact factor: 4.666
Authors: Michael O Harris-Love; Galen Joe; Todd E Davenport; Deloris Koziol; Kristen Abbett Rose; Joseph A Shrader; Olavo M Vasconcelos; Beverly McElroy; Marinos C Dalakas Journal: Arthritis Care Res (Hoboken) Date: 2015-04 Impact factor: 4.794
Authors: Vincent Shieh; Cris Zampieri; Paul Stout; Galen O Joe; Angela Kokkinis; Kenneth H Fischbeck; Christopher Grunseich; Joseph A Shrader Journal: J Rehabil Med Clin Commun Date: 2022-08-18
Authors: Michael O Harris-Love; Lindsay Fernandez-Rhodes; Galen Joe; Joseph A Shrader; Angela Kokkinis; Alison La Pean Kirschner; Sungyoung Auh; Cheunju Chen; Li Li; Ellen Levy; Todd E Davenport; Nicholas A Di Prospero; Kenneth H Fischbeck Journal: Rehabil Res Pract Date: 2014-05-05
Authors: Grazia Maugeri; Velia D'Agata; Federico Roggio; Cristina Cortis; Andrea Fusco; Carl Foster; Mark M Mañago; Michael O Harris-Love; Veronica Vleck; Maria Francesca Piacentini; Giuseppe Musumeci Journal: J Funct Morphol Kinesiol Date: 2020-07-18