Table 4. Habitual physical activity (additional endurance and strength training to the HIIT sessions).
Training time (min) p-Value RPE p-Value TTL p-Value
Week 1 HIIT-R 281 ± 256 0.951 12.8 ± 0.7 0.055 3,339 ± 3,538 0.785
HIIT-F 273 ± 139 14.4 ± 1.5 3,793 ± 1,939
Week 2 HIIT-R 286 ± 336 0.731 13.0 ± 0.4 0.356 3,869 ± 4,259 0.857
HIIT-F 225 ± 285 13.6 ± 1.3 3,446 ± 3,917
Week 3 HIIT-R 284 ± 255 0.850 13.0 ± 1.1 0.540 3,697 ± 3,326 0.967
HIIT-F 256 ± 274 13.5 ± 1.4 3,610 ± 4,203
Week 4 HIIT-R 272 ± 142 0.753 14.4 ± 1.3 0.988 3,227 ± 2,252 0.557
HIIT-F 324 ± 364 14.4 ± 1.3 5,459 ± 5,340
Total HIIT-R 1,084 ± 908 0.991 13.3 ± 0.6 0.189 14,131 ± 11,828 0.866
HIIT-F 1,078 ± 1,019 14.3 ± 1.5 15,398 ± 14,591
HIIT-R, high-intensity interval training running group; HIIT-F, high-intensity interval training functional group; RPE, ratings of perceived exertion (BORG); TTL, total training load (perceived exertion × training session time (in min))