Effects of treadmill inclination on the gait of individuals with chronic hemiparesis

Elsevier

2011-10-01

Biomechanics

Exercise test

Rehabilitation

Stroke

Objective: To analyze the effects of electric treadmill inclination on the gait of individuals with chronic hemiparesis. Design Descriptive, observational study Setting Laboratory for human movement analyses of UFRN. Participants Individuals (N=18) with a mean age of 55.3±9.3 years and a lesion time of 36±22.8 months. Interventions Not applicable. Main Outcome Measures Subjects were assessed for functional independence (FIM) and balance (Berg Balance Scale). Spatial-temporal variables were observed as well as the angular variation of the hip, knee, and ankle in the sagittal plane, while the individuals walked on the treadmill at 3 different inclinations (0%, 5%, and 10%). Results: There was an increase in stance time between 0% and 5% (0.83±0.21 vs 0.87±0.20; P=.011) and 0% and 10% (0.83±0.21 vs 0.88±0.23; P=.021). The other spatial-temporal variables did not change. During initial contact there was an increase in the hip, knee, and ankle flexion angle. An increase in hip amplitude was also observed between 0% and 10% (37.83±5.23 vs 41.12±5.63; P<.001) and 5% and 10% (38.80±5.96 vs 41.12±5.63; P=.002) and in knee amplitude between 0% and 10% (47.51±15.07 vs 50.30±12.82; P=.040), as well as decreased hip extension and increased dorsiflexion. Conclusions: Treadmill inclination promoted angular alterations such as an increase in hip, knee, and ankle angle during initial contact and the swing phase and an increase in the amplitude of movement of the hip and knee, as well as an increase in stance time of the paretic lower limb