| Abstrakt: |
High-intensity interval exercise (HIIE) has become increasingly popular, emerging a leading trend in the fitness industry worldwide, often performed using either traditional equipment or only body weight as resistance. While HIIE protocols can induce muscle fatigue for hours or days after exercise, however this, previous research has predominantly focused on treadmill or cycle ergometer-based HIIE. Despite its time efficiency and short duration, literature suggests that high-intensity exercises may lead to negative affective responses, potentially reducing adherence. Thus, this study aimed to analyze perceptual and performance responses following a bodyweight HIIE session in adult men. This cross-sectional quantitative analysis, was approved by the UPE Ethics and Research Committee (CAAE: 52201821.4.0000.5191). Ten physically active men, aged 18 to 40 years (mean age 24.80±1.21 years; mean BMI 24.61±0.77 kg/m²), participated. The experimental session consisted of the following exercise sequence: jumping jacks, burpees, mountain climbers, and squat jumps. A maximum of 20 sets of 30 seconds at all-out intensity were performed, with passive recovery of 30 seconds between sets. Before the session and immediately after, the Rating Perceived Exertion scale (RPE -- Borg CR10) and Affective Valence by Feeling scale (FS) were measured, the average height of three countermovement vertical jumps (cm) and the average strength of three handgrip measurements (kg/f). Furthermore, the Pain Numeric Rating scale (PNR) and the Perceived Recovery Status scale (PRS) were monitored at the following moments: pre-session, 5 minutes later and 24 hours (h) after. A descriptive statistical analysis was performed (mean ± standard deviation), the Shapiro-Wilk normality test was applied, a Student's T-Test and a one-way ANOVA for dependent samples, considering an alpha of 5%. The results did not demonstrate significant differences in upper limb strength through handgrip (47.60±7.63 kg/f vs. 49.50±5.95 kg/f; p>0.05) and average vertical jump height (36.69 ± 4.46 cm vs. 33.91±7.02 cm; p>0.05), compared before and immediately after the session. There was an increase in RPE (0±0 au vs. 8±2 au, p<0.01) and a decrease in FS (2±2 au vs. -3±2 au; p<0.01) pre and post session. Furthermore, there was an increase in PNR 24h after the session, compared to the state before and immediately after (0±0 au pre; 1±1 au post; 4±2 au 24h after; p<0.05). and a decrease in PRS, immediately after and 24h, compared to the moment before (10±1 au pre; 5±2 au post; 6±3 au 24h; p<0.05). It is concluded that an HIIE session, with body weight, did not demonstrate a decrease in the average performance of upper limb strength (handgrip) and vertical jump height (lower limbs). showing a decrease in affective valence immediately after the session. Furthermore, 24 hours after the session, PRS is not completely restored to baseline levels, concurrently with an increase in delayed onset muscle pain. [ABSTRACT FROM AUTHOR] |
