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Table 3 Work capacity measured at interval number three in weeks 4 and 12 in the group performing high-intensity interval training

From: Effect of high-intensity interval training on cardiorespiratory fitness, physical activity and body composition in people with schizophrenia: a randomized controlled trial

   Mean (SD) Mean diff 95% CI P
Treadmill speed (km/h) Week 4 6.1 (2.2) 0.5 0.2, 0.9 0.002
Week 12 6.7 (2.8)
Treadmill inclination (%) Week 4 4.1 (2.8) 1.6 0.2, 2.9 0.02
Week 12 5.7 (5.1)
Heart rate (beats/min) Week 4 155 (21) 3.9 0.8, 7.1 0.01
Week 12 159 (22)
  1. N = 36. Presented values are the mean ± SD. CI, confidence interval