Effects of age and fatigue on gait

Activiteit: Supervision and examination of PhD students of the UGAcademic


Older individuals are more susceptible to the fatigue condition. Fatigue has been known to perturb the system and gait’s adjustments are necessary to lead with it. The underlying mechanisms of such adjustments are not completely known. The purpose is to determine the effects of age, muscle fatigue, and cognitive fatigue on stability and variability of gait, and muscle activation patterns measured during walking. 24 older and 24 young individuals will be distributed into 2 groups: fatigue and control. For fatigue, two different fatigue conditions will be randomly assigned: Day 1 (muscle fatigue condition – sit-to-stand test) and, 5-7 days later, Day 2 (3 computational cognitive tests for 10 minutes each - Psychomotor Vigilance Test, Stroop test and AX – Continuous performance test). Controls will be seated reading for 30 minutes in each day. Before and after the fatigue or control condition protocols, participants will walk for 2 x 3 minutes (fixed speed and 20-30% higher than comfortable speed) on a treadmill instrumented with force platforms. Gait stability, variability, extrapolated center of mass and muscle activation will be analyzed during the walk. The maximal voluntary knee extensor with superimposed twitch interpolation will be evaluated before and after fatigue.
Examen gehouden opRijksuniversiteit Groningen
Mate van erkenningInternational