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Table 3 Effects of lighting on gait

From: Shedding light on walking in the dark: the effects of reduced lighting on the gait of older adults with a higher-level gait disorder and controls

 

Patients with HLGD (n = 22)

Controls (n = 20)

 

Normal Lighting

Near Dark (P-value*)

Normal Lighting

Near Dark (P-value*)

Average Stride Time (sec)

1.30 ± 0.17

1.29 ± 0.15 (0.376)

1.17 ± 0.12

1.17 ± 0.12 (0.912)

Stride Time Variability (%)

5.6 ± 2.3

6.8 ± 2.3 (0.005)

3.6 ± 1.2

4.1 ± 1.9 (0.295)

Average Swing Time (%)

33.9 ± 2.7

32.5 ± 3.7 (<0.001)

35.7 ± 3.0

35.5 ± 3.2 (0.015)

Swing Time Variability (%)

7.0 ± 2.9

10.1 ± 4.7 (<0.001)

4.5 ± 2.4

5.1 ± 2.5 (0.365)

Walk Time (sec)

106.3 ± 44.2

124.4 ± 57.1 (<0.001)

72.8 ± 20.8

84.2 ± 33.5 (0.013)

  1. *P-values shown in parentheses are based on within group comparisons between near dark and normal lighting. All measures of gait were different (p < 0.01) in the two subject groups, both under normal lighting and in near darkness. Walk time is the time to complete the 54 meter walk.