| Autor: |
Nalçakan GR; a Faculty of Sport Science, Ege University, 35040 İzmir, Turkey., Songsorn P; b Faculty of Health Sciences and Sport, University of Stirling, Stirling, FK9 4LA, UK., Fitzpatrick BL; c School of Sport, Ulster University, Derry/Londonderry, BT48 7JL, UK., Yüzbasioglu Y; a Faculty of Sport Science, Ege University, 35040 İzmir, Turkey., Brick NE; d Psychology Research Institute, Ulster University, Derry/Londonderry, BT48 7JL, UK., Metcalfe RS; c School of Sport, Ulster University, Derry/Londonderry, BT48 7JL, UK.; e Applied Sports Technology, Exercise and Medicine (A-STEM) Research Centre, Swansea University, Swansea, SA1 8EN, UK., Vollaard NBJ; b Faculty of Health Sciences and Sport, University of Stirling, Stirling, FK9 4LA, UK. |
| Abstrakt: |
Recent studies have demonstrated that modifying the "classic" 6 × 30-s "all-out" sprint interval training protocol by incorporating either shorter sprints (6 × 10-s or 15-s sprints) or fewer sprints (e.g., 2 × 20-s sprints; reduced-exertion high-intensity interval training (REHIT)) does not attenuate the training-induced improvements in maximal aerobic capacity. The aim of the present study was to determine if reducing the sprint duration in the REHIT protocol from 20 s to 10 s per sprint influences acute affective responses and the change in maximal aerobic capacity following training. Thirty-six sedentary or recreationally active participants (17 women; mean ± SD; age: 22 ± 3 years; body mass index: 24.5 ± 4.6 kg·m -2 ; maximal aerobic capacity: 37 ± 8 mL·kg -1 ·min -1 ) were randomised to a group performing a "standard" REHIT protocol involving 2 × 20-s sprints or a group who performed 2 × 10-s sprints. Maximal aerobic capacity was determined before and after 6 weeks of 3 weekly training sessions. Acute affective responses and perceived exertion were assessed during training. Greater increases in maximal aerobic capacity were observed for the group performing 20-s sprints (2.77 ± 0.75 to 3.04 ± 0.75 L·min -1 ; +10%) compared with the group performing 10-s sprints (2.58 ± 0.57 vs. 2.67 ± 3.04 L·min -1 ; +4%; group × time interaction effect: p < 0.05; d = 1.06). Positive affect and the mood state vigour increased postexercise, while tension, depression, and total mood disturbance decreased, and negative affect remained unchanged. Affective responses and perceived exertion were not altered by training and were not different between groups. In conclusion, reducing sprint duration in the REHIT protocol from 20 s to 10 s attenuates improvements in maximal aerobic capacity, and does not result in more positive affective responses or lower perceived exertion. |
