Mean ± SD pain intensity during the walk-test with TENS
(VAS4) was 27.6 mm ± 24.6 mm and lower than the pre-TENS walk
test (VAS2) (mean ± SD VAS2 VAS4 = 6.0 mm ± 12.9 mm,
P = .0002, 1-sample t-test) and the pre-TENS at rest (VAS1)
(mean ± SD VAS1 VAS4 = 0.9 mm ± 20.9 mm).