Isometric exercise during immobilization reduces the time to return to play after lateral ankle sprain |
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| Affiliation: | 1. Health and Sports Association Nabeshima Orthopaedic Clinic, 4-23-2 Matsunami, Chuo-ku, Chiba, Chiba, 260-0044, Japan;2. Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba, 260-8670, Japan;3. Sportsmedics Center, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba, 260-8670, Japan;1. Sports Physical Therapy Department, Gundersen Health System, Onalaska, WI, USA;2. La Crosse Institute for Movement Science, University of Wisconsin-La Crosse, La Crosse, WI, USA;3. Health Professions Department, University of Wisconsin-La Crosse, La Crosse, WI, USA;1. Universidade do Estado do Rio de Janeiro (UERJ), Programa de Pós-Graduação em Ciências do Exercício e do Esporte (PPGCEE), Rua São Francisco Xavier, n° 524, 9° floor; Block F; Room 9122, Rio de Janeiro, RJ, Brazil;2. Centro de Educação Física Almirante Adalberto Nunes (CEFAN), Laboratório de Pesquisa em Ciências do Exercício (LABOCE), Avenida Brasil, 10.590, Penha, Rio de Janeiro, RJ, CEP: 21.012-350, Brazil;3. Programa de Pós-Graduação em Desempenho Humano Operacional (PPGDHO), Universidade da Força Aérea (UNIFA), Av. Marechal Fontenelle, 1200, Campo dos Afonsos, Rio de Janeiro, RJ, Brazil;1. Northern Arizona University, Phoenix, AZ, USA;2. University of Nebraska at Omaha, Omaha, NE, USA;3. Oregon State University, Corvallis, OR, USA;1. Aspetar Sports Medicine Hospital, Sports City Street, Doha, 29222, Qatar;2. High Point University, One University Parkway High Point, NC, 27268, USA;1. Faculty of Sports Studies, Masaryk University, Brno, Czechia;2. Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czechia;3. Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA |
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| Abstract: | [Objectives] Immobilization reduces symptoms after lateral ankle sprain but may worsen the range of motion (ROM) of the ankle and delay return to play (RTP). We aimed to elucidate the correlation between ankle ROM and time to RTP following immobilization for lateral ankle sprain and investigated if isometric exercise during immobilization would increase ROM and shorten the time to RTP. [Participants and outcome measures] Eighty-two patients with acute lateral ankle sprain were treated by a short-leg cast with or without isometric exercise and electrical muscle stimulation (EMS); intervention group or control group, respectively. The correlation between ankle ROM at cast removal and time to RTP was analyzed. The total and side-to-side ankle ROM and the time to RTP were compared between the two groups. [Results] Side-to-side difference in total ankle ROM significantly correlated with time to RTP (r = 0.38, p = 0.02). The intervention reduced the side-to-side difference in total ROM (20° versus 31°, p = 0.01) and time to RTP (46 versus 65 days, p = 0.01) compared to the control group. [Conclusion] Increased deficiency in ankle ROM led to a longer time to RTP, and isometric exercise combined with EMS during immobilization increased the total ankle ROM and shortened the time to RTP. |
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| Keywords: | Lateral ankle sprain Isometric exercise Immobilization Return to play |
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