| Full text | |
| Author(s): |
Luches-Pereira, Gabriel
;
Kalva-Filho, Carlos Augusto
;
Bertucci, Danilo Rodrigues
;
de Carvalho, Carlos Dellavechia
;
Barbieri, Ricardo Augusto
;
Papoti, Marcelo
Total Authors: 6
|
| Document type: | Journal article |
| Source: | INTERNATIONAL JOURNAL OF SPORTS MEDICINE; v. 45, n. 05, p. 10-pg., 2024-02-12. |
| Abstract | |
The total anaerobic contribution (AC([La-]+PCr)) is a valid and reliable methodology. However, the active muscle mass plays an important role in the AC([La-]+PCr) determination, which might influence its reliability. Thus, this study aimed to investigate the effects of two exhaustive intensities on the reliability of the AC([La-]+PCr) during a one-legged knee extension (1L-KE) exercise. Thirteen physically active males were submitted to a graded exercise to determine the peak power output (PPO) in the 1L-KE. Then, two constant-load exercises were conducted to task failure at 100% (TTF100) and 110% (TTF110) of PPO, and the exercises were repeated on a third day. The blood lactate accumulation and the oxygen uptake after exercise were used to estimate the anaerobic lactic and alactic contributions, respectively. Higher values of AC([La-]+PCr) were found after the TTF100 compared to TTF110 (p=0.042). In addition, no significant differences (p=0.432), low systematic error (80.9 mL), and a significant ICC (0.71; p=0.004) were found for AC([La-]+PCr) in the TTF100. However, an elevated coefficient of variation was found (13.7%). In conclusion, we suggest the use of the exhaustive efforts performed at 100% of the PPO with the 1L-KE model, but its elevated individual variability must be carefully considered in future studies. (AU) | |
| FAPESP's process: | 16/12781-5 - Metabolic, hematologic and neuromuscular adaptations from training from "sleep high and train low", followed by taper period: A and randomized double-blind study. |
| Grantee: | Marcelo Papoti |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/09339-9 - CHARACTERISTICS OF FATIGUE IN EFFORTS WITH LOW MUSCLE GLYCOGEN PERFORMED IN DIFFERENT INTENSITIES: A DOUBLE-BLIND AND RANDOMIZED STUDY |
| Grantee: | Carlos Augusto Kalva Filho |
| Support Opportunities: | Scholarships in Brazil - Doctorate |