Leonardo Shigaki1, Edgar Ramos Vieira2, André Wilson de Oliveira Gil3, Cynthia Gobbi Alves Araújo1, Mariana Zingari Carmargo3, Leandro Amaral Sturion1, Marcio Roǵerio de Oliveira3, Rubens A da Silva4. 1. Laboratory of Functional Evaluation and Human Motor Performance (LAFUP), Londrina, Brazil. 2. Physical Therapy & Neuroscience Departments, Wertheims' Colleges of Nursing and Health Sciences & Medicine, Florida International University, Miami, FL. 3. Universidade Norte do Paraná, Laboratory of Functional Evaluation and Human Motor Performance (LAFUP), Londrina, Brazil. 4. Universidade Norte do Paraná, Laboratory of Functional Evaluation and Human Motor Performance (LAFUP), Londrina, Brazil. Electronic address: rubens@unopar.br.
Abstract
OBJECTIVE: The purpose of this study was to assess the effect of holding an external load on the standing balance of younger and older adults with and without chronic low back pain (CLBP). METHODS: Twenty participants with and 20 without CLBP participated in the study. Each group contained 10 younger (50% men) and 10 older adults (50% men). Participants were instructed to look straight ahead while standing on a force platform during two 120-second trials with and without holding an external load (10% of body mass). The center of pressure area, mean velocity, and mean frequency in the anteroposterior and mediolateral directions were measured. RESULTS: Older adults had worse standing balance than younger adults did (P < .001, d = 0.20). There were no significant balance differences between participants with and without CLBP within age groups during standing balance condition. However, holding the external load significantly increased postural instability for both age groups and CLBP status, with mean effect size across center of pressure variables of d = 0.82 for older participants without CLBP and d = 2.65 for younger participants without CLBP. These effects for people with CLBP were d = 1.65 for subgroup of older and d = 1.60 for subgroup of younger participants. CONCLUSION: Holding an external load of 10% of body mass increased postural instability of both younger and older adults with and without CLBP.
OBJECTIVE: The purpose of this study was to assess the effect of holding an external load on the standing balance of younger and older adults with and without chronic low back pain (CLBP). METHODS: Twenty participants with and 20 without CLBP participated in the study. Each group contained 10 younger (50% men) and 10 older adults (50% men). Participants were instructed to look straight ahead while standing on a force platform during two 120-second trials with and without holding an external load (10% of body mass). The center of pressure area, mean velocity, and mean frequency in the anteroposterior and mediolateral directions were measured. RESULTS: Older adults had worse standing balance than younger adults did (P < .001, d = 0.20). There were no significant balance differences between participants with and without CLBP within age groups during standing balance condition. However, holding the external load significantly increased postural instability for both age groups and CLBP status, with mean effect size across center of pressure variables of d = 0.82 for older participants without CLBP and d = 2.65 for younger participants without CLBP. These effects for people with CLBP were d = 1.65 for subgroup of older and d = 1.60 for subgroup of younger participants. CONCLUSION: Holding an external load of 10% of body mass increased postural instability of both younger and older adults with and without CLBP.
Authors: Leandro A Sturion; Alexandre H Nowotny; Fabrice Barillec; Gilles Barette; Gabriela K Santos; Fellipe A Teixeira; Karen P Fernandes; Rubens da Silva Journal: S Afr J Physiother Date: 2020-10-26
Authors: Amanda M S Cavaguchi; Márcio R Oliveira; Christiane G Macedo; Pablo E A de Souza; Andreo F Aguiar; Mathieu Dallaire; Suzy Ngomo; Rubens A da Silva Journal: Int J Environ Res Public Health Date: 2019-06-20 Impact factor: 3.390
Authors: Sachini N K Kodithuwakku Arachchige; Harish Chander; Alana J Turner; Adam C Knight Journal: Int J Environ Res Public Health Date: 2021-02-24 Impact factor: 3.390