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Postural Control Complexity and Fatigue in Minimally Affected Individuals with Multiple Sclerosis |
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| Authors: | Felipe B Santinelli Fabio A Barbieri Carina F Pinheiro Avelino C Amado Emerson Sebastião |
| Institution: | 1. Human Movement Research Laboratory (MOVI-LAB), Department of Physical Education, Graduate Program in Movement Sciences, S?o Paulo State University (UNESP)–Campus Bauru, Brazil.;2. Department of Health Sciences, Ribeir?o Preto Medical School University of S?o Paulo, S?o Paulo, Brazil.;3. Department of Kinesiology School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA.;4. Department of Kinesiology and Physical Education, Northern Illinois University, IL. |
| Abstract: | This study investigated changes in postural control complexity in people with multiple sclerosis (PwMS) before and after a fatigue protocol. Thirteen minimally affected PwMS (1.53 ± 1.03- Expanded Disability Status Scale) and 12 non-MS controls. Postural test included quiet stance on a force platform under two visual conditions (saccades and fixation) before and after a fatigue protocol. Postural complexity was assessed through the multiscale entropy. A three-way ANOVA showed a main effect of fatigue in the medial-lateral direction (p <0.007), with fatigue protocol reducing postural complexity in both groups. No differences were found between groups or visual conditions. Minimally affected PwMS demonstrated similar postural complexity compared with non-MS controls under both visual tasks and showed similar decrements in postural complexity as a result of fatigue. |
| Keywords: | Multiple sclerosis multiscale entropy postural control fatigue |