TY  - JOUR
PY  - 2017//
TI  - Effects of holding an external load on the standing balance of older and younger adults with and without chronic low back pain
JO  - Journal of Manipulative and Physiological Therapeutics
A1  - Shigaki, Leonardo
A1  - Vieira, Edgar Ramos
A1  - de Oliveira Gil, André Wilson
A1  - Araújo, Cynthia Gobbi Alves
A1  - Carmargo, Mariana Zingari
A1  - Sturion, Leandro Amaral
A1  - de Oliveira, Marcio Roǵerio
A1  - da Silva, Rubens A.
SP  - 284
EP  - 292
VL  - 40
IS  - 4
N2  - 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). <br><br>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. <br><br>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. <br><br>CONCLUSION: Holding an external load of 10% of body mass increased postural instability of both younger and older adults with and without CLBP.<br><br>Copyright © 2017. Published by Elsevier Inc.<p />  <p>Language: en</p>
LA  - en
SN  - 0161-4754
UR  - http://dx.doi.org/10.1016/j.jmpt.2017.01.007
ID  - ref1
ER  -