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Table 2 Effects of muscle fatigue on gait characteristics under single and dual-task conditions in young and older adults

From: Effects of muscle fatigue on gait characteristics under single and dual-task conditions in young and older adults

Parameter Young adults (n= 16) Older adults (n= 16)
  Pre Post T5 Pre Post T5
Gait velocity under ST condition (cm/s) 126.3 ± 16.6 121.8 ± 14.7 125.9 ± 17.1 124.2 ± 14.9 127.7 ± 13.7 125.5 ± 14.0
Gait velocity under DT condition (cm/s) 113.8 ± 15.5 110.9 ± 15.9 113.9 ± 15.0 106.2 ± 18.4 116.5 ± 18.7 116.6 ± 19.0
DT costs in gait velocity (%) 9.6 ± 8.4 9.1 ± 5.9 9.3 ± 5.8 14.1 ± 11.4 8.7 ± 10.9 7.5 ± 8.2
Stride length under ST condition (cm) 136.6 ± 15.8 132.6 ± 13.2 135.9 ± 14.4 138.6 ± 9.9 139.3 ± 9.9 138.3 ± 9.1
Stride length under DT conditions (cm) 129.9 ± 13.8 126.9 ± 14.9 129.5 ± 12.9 128.2 ± 11.7 133.8 ± 13.1 132.8 ± 12.5
DT costs in stride length (%) 4.7 ± 4.6 4.4 ± 3.6 4.6 ± 3.2 7.2 ± 5.9 4.0 ± 6.7 4.1 ± 4.8
Stride length variability under ST condition (cm) 1.7 ± 0.9 1.9 ± 0.8 1.2 ± 0.4 2.0 ± 0.7 1.9 ± 1.0 1.8 ± 0.9
Stride length variability under DT conditions (cm) 1.9 ± 0.8 2.0 ± 0.4 1.9 ± 0.7 4.0 ± 2.8 2.0 ± 1.0 2.6 ± 0.9
DT costs in stride length variability (%) -50.3 ± 95.9 -24.8 ± 71.8 -76.6 ± 109.7 -116.0 ± 177.1 -58.2 ± 145.1 -66.6 ± 87.1
Performance in the CI task during walking (number of correct subtractions) 6.1 ± 1.5 7.6 ± 1.4 7.4 ± 1.8 5.1 ± 2.0 6.0 ± 1.7 5.9 ± 1.5
  1. Notes: Values are mean ± SD; ST = single task; DT = dual task; CI = cognitive interference