Effects of low and high intensity interval training exercises on VO and components of neuromuscular and vascular system in male volunteers.

OBJECTIVES

To evaluate the effects of different intensity exercises on maximal oxygen consumption (VO and levels of components, namely brain-derived neurotrophic factor (BDNF), tyrosine kinase receptor B (TrKB), vascular endothelial growth factor (VEGF), peroxisome proliferator activated receptor-gamma coactivator (PGC-1α), and irisin.

METHODS

Thirty-six male participants were divided into control (CNT), low-intensity (LIIT), and high-intensity interval training (HIIT) groups. LIIT and HIIT groups consisted of 8 exercises (20 s work and rest in each repetition, respectively) conducted for 4 weeks. VO and protein component levels were determined pre- and post-training. VO capacity was also determined using the Yo Yo Intermittent Recovery Test-1 (Yo Yo IR-1). Statistical analysis was conducted to determine significance of the differences observed.

RESULTS

According to the YoYo IR-1, VO, serum BDNF, VEGF, PGC1α, irisin, and TrkB data obtained in the study, a statistically significant difference between the groups was observed (p<0.05). While the interaction effect was found to be statistically significant in the study using PGC1α, VEGF, and TrkB data (p<0.05), it was not found to be statistically significant using YoYo IR-1, VO, serum BDNF, or irisin data (p>0.05).

CONCLUSION

HIIT and LIIT improved all study parameters, while HIIT showed a greater effect than LIIT.