| Full text | |
| Author(s): |
Alves, Isabella dos Santos
[1]
;
Kalva-Filho, Carlos Augusto
[2]
;
Aquino, Rodrigo
[2, 3]
;
Travitzki, Leonardo
[1]
;
Tosim, Alessandro
[4, 5]
;
Papoti, Marcelo
[1]
;
Morato, Marcio Pereira
[1]
Total Authors: 7
|
| Affiliation: | [1] Univ Sao Paulo, Sch Phys Educ & Sport Ribeirao Preto, Sao Paulo - Brazil
[2] Univ Sao Paulo, Med Sch Ribeirao Preto, Postgrad Program Rehabil & Funct Performance, Ribeirao Preto - Brazil
[3] Univ Porto, Fac Sport, CIFI2D, Porto - Portugal
[4] Univ Estadual Campinas, Sch Phys Educ, Campinas, SP - Brazil
[5] Natl Brazilian Goalball Team, Dept Coaching, Jundiai - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | FRONTIERS IN PHYSIOLOGY; v. 9, NOV 20 2018. |
| Web of Science Citations: | 1 |
| Abstract | |
Our aims were to compare physiological parameters from the laboratory environment (LaB) and simulated goalball games (GaM), test relationships between physiological parameters in the laboratory and game technical performance (GTP), and examine the associations between physiological and technical responses during games. Seven elite athletes from the Brazilian National Team performed in LaB environment; (i) an incremental test to determine peak oxygen consumption ((V) over dotO(2PEAK)), its corresponding speed, and peak blood lactate concentration and (ii) submaximal and supramaximal efforts to estimate maximal anaerobic contribution (AnC). In GaM condition, simulated games were also performed to determine physiological responses throughout the game, and to analyze the GTP (number of throws, defenses, recovery, and density of actions). No correlations (unclear) were found between laboratory and games analyses for VO2PEAK {[}47. 3 (17.2) vs. 25.8 (18.2) mL.Kg(-1).min(-1)], peak blood lactate concentrations {[}10.2 (5.4) vs. 2.0 (0.7) mM], and total AnC {[}21.0 (14.0) vs. 4.8 (6.1) mL Kg(-1)]. (V) over dotO(2PEAK) in the laboratory condition presented very likely correlations with throw and recovery frequency in games (r = -0.87 and confidence interval {[}CI] = 0.41; r = -0.90 and CI = 0.35; respectively). Oxygen consumption remained above baseline while blood lactate concentration remained unchanged during the games. The very likely correlation between anaerobic alactic contribution and action density (r = 0.95 and CI = 0.25) highlights the importance of the alactic metabolism. In general, our study demonstrates that goalball can be characterized as a high-intensity intermittent effort, where athlete performance is based on aerobic metabolism predominance while determinant actions are supplied by the anaerobic alactic metabolism. Specifically, higher values of LaB vs. GaM highlighted the need for standardization of specific protocols for goalball evaluation, mainly for the reproduction of ecologically valid values. In addition, (V) over dotO(2PEAK) correlated with recovery frequency in the LaB condition, demonstrating that passive or low-intensity recovery between actions is fundamental to maintain performance. (AU) | |
| FAPESP's process: | 15/06781-0 - Characterization of metabolic participation in goalball athletes |
| Grantee: | Isabella dos Santos Alves |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |