Can disordered eating behaviors reduce maximum oxygen consumption in road cyclists? / Comportamentos de risco para os transtornos alimentares pode reduzir o consumo máximo de oxigênio em ciclistas de estrada?

Abstract The aim of this study was to compare the maximum oxygen consumption (VO2max) between road cyclists with and without risk for eating disorders. The sample was composed of 43 cyclists aged 18-25 years, participants of the road cycling championship of the State of Pernambuco. VO2max was measured by a computerized metabolic analyzer during an incremental test in cycleergometer. The initial test load was 50 W, with increments of 25 W every minute until volitional exhaustion or inability to maintain the current load. To evaluate disordered eating behaviors (DEB), the Eating Attitudes Test was used (EAT-26). Univariate analysis of covariance (ANCOVA) was used to compare the VO2max between cyclists with (EAT-26 ≥ 21) and without (EAT-26 < 21) risk for eating disorders. The findings showed statistically significant VO2max difference between cyclists with and without risk to eating disorders (F (2,41)=28.44; p=0.01), indicating moderate effect size (d = 0.6). It was concluded that DEB was related to cyclists with lower VO2max.

Resumo O objetivo da pesquisa foi comparar o consumo máximo de oxigênio (VO2máx) entre ciclistas de estrada com e sem risco para o desencadeamento de transtornos alimentares. A amostra foi composta por 43 ciclistas com idade entre 18 e 25 anos, participantes do campeonato pernambucano de ciclismo de estrada. O VO2máx foi mensurado por um analisador metabólico computadorizado no decorrer de um teste incremental realizado em cicloergômetro. A carga inicial do teste foi 50 W, com incrementos de 25 W a cada minuto até atingir a exaustão voluntária ou impossibilidade de manter a carga atual. Para avaliar os comportamentos de risco para os transtornos alimentares (CRTA) foi utilizado o Eating Attitudes Test (EAT-26). Conduziu-se a análise univariada de covariância (ANCOVA) para comparar o VO2máx entre ciclistas com (EAT-26≥21) e sem riscos (EAT-26<21) para os transtornos alimentares. Os achados revelaram diferença estatisticamente significante do VO2máx entre ciclistas com e sem risco para os transtornos alimentares (F(2,41)=28,44; p=0,01), indicando moderado tamanho do efeito (d=0,6). Concluiu-se que os CRTA estiveram relacionados aos ciclistas com menor VO2máx.

Can power and anaerobic capacity reduce according to disordered eating behaviors in cyclists?

Abstract The present study aimed to compare the power, anaerobic capacity (AC) and performance in a road bicycle race among cyclists with and without risk of disordered eating behaviors (DEB). The sample was selected in a non-probabilistic way, totaling 69 male road cyclists aged between 19 and 30 years. The Wingate test was used to evaluate peak power (PP) and mean power. Time in minutes was adopted to determine performance in a 120-km road cycling race (competitive event). The Eating Attitudes Test (EAT-26) was completed to assess DEBs. The results did not indicate a difference in PP among cyclists with and without risk of DEBs (F (2, 67)=3.92; p=0.13). Findings showed a difference in mean power among cyclists with and without risk of DEBs (F (2, 67)=36.43; p=0.01). The results revealed a difference in performance in 120-km cycling races among cyclists with and without risk of DEBs (F (2, 67)=46.03; p=0.01). It could be concluded that DEBs were associated with a lower mean power and performance in a competitive event among male road cyclists, although the same was not true for PP.(AU)