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Table 2 Mean NRS pain, body weight, 6MWD, and quadriceps strength at week 0 and week 4, and mean difference between pre- and post-treatment (per-protocol analysis, n = 24)

From: Design of an Underwater Treadmill System for rehabilitation of older obese adults: a pre-post study

Parameters

Week 0

mean ± SD

Week 4

mean ± SD

Mean difference#

(95% CI)

p-value

NRS (0–10)

6.4 ± 1.2

4.1 ± 2.0

−2.3 (−3.0, −1.5)

< 0.001

Body weight (kg)

70.5 ± 9.8

70.3 ± 9.9

−0.2 (−0.8, 0.5)

0.697

6MWD (meters)

294.4 ± 84.0

329.3 ± 73.1

34.9 (14.1, 55.8)

0.002

QS (kg)

8.4 ± 3.1

10.2 ± 3.3

1.8 (1.1, 2.6)

< 0.001

  1. A p-value< 0.05 indicates statistical significance
  2. #Mean difference = week 4 – week 0; using paired t-test
  3. Abbreviations: NRS numerical rating scale, 6MWD 6-min walk distance; QS, quadriceps strength, SD standard deviation, CI confidence interval