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Table 6 Self-reported variables before and after the intervention

From: Low-volume high-intensity interval training improves cardiometabolic health, work ability and well-being in severely obese individuals: a randomized-controlled trial sub-study

Variable HIIT group (n = 30) Control group (n = 19) Friedman test P-value
Baseline Post Baseline Post
Work ability Index 34.6 ± 6.8 37.6 ± 7.3***+ 36.9 ± 4.7 34.9 ± 6.5 0.018
EQ-5D-5L (index) 0.87 ± 0.14 0.90 ± 0.15* 0.88 ± 0.12 0.85 ± 0.21 0.048
EQ (VAS) 67 ± 14 77 ± 17*** 63 ± 22 67 ± 27  < 0.001
PSQ-worries 33.8 ± 24.1 27.8 ± 23.0 25.6 ± 17.9 24.8 ± 15.6 0.206
PSQ-tension 45.8 ± 26.9 38.2 ± 24.8 37.9 ± 27.9 38.2 ± 26.4 0.160
PSQ-joy 55.8 ± 24.3 63.1 ± 24.0 62.5 ± 25.7 61.1 ± 23.1 0.078
PSQ-demands 45.2 ± 22.8 47.6 ± 21.9 41.8 ± 23.8 37.2 ± 23.2 0.631
PSQ-total 42.3 ± 21.3 37.6 ± 20.3 35.7 ± 20.6 34.9 ± 18.7 0.189
  1. HIIT High-intensity interval training group, CON control group; VAS visual analogue scale, PSQ Perceived Stress Questionnaire
  2. * P < 0.05, *** P < 0.001 significant within-group difference between baseline and post-intervention
  3. +P < 0.05 significant difference between groups