RESUMO
This study cross-validated statistical models for prediction of peak oxygen consumption using ratings of perceived exertion from the Adult OMNI Cycle Scale of Perceived Exertion. 74 participants (men: n=36; women: n=38) completed a graded cycle exercise test. Ratings of perceived exertion for the overall body, legs, and chest/breathing were recorded each test stage and entered into previously developed 3-stage peak oxygen consumption prediction models. There were no significant differences (p>0.05) between measured and predicted peak oxygen consumption from ratings of perceived exertion for the overall body, legs, and chest/breathing within men (mean±standard deviation: 3.16±0.52 vs. 2.92±0.33 vs. 2.90±0.29 vs. 2.90±0.26 L·min(-1)) and women (2.17±0.29 vs. 2.02±0.22 vs. 2.03±0.19 vs. 2.01±0.19 L·min(-1)) participants. Previously developed statistical models for prediction of peak oxygen consumption based on subpeak OMNI ratings of perceived exertion responses were similar to measured peak oxygen consumption in a separate group of participants. These findings provide practical implications for the use of the original statistical models in standard health-fitness settings.
Assuntos
Ciclismo/fisiologia , Modelos Estatísticos , Consumo de Oxigênio/fisiologia , Esforço Físico/fisiologia , Adolescente , Adulto , Estudos Transversais , Teste de Esforço , Feminino , Humanos , Masculino , Percepção , Adulto JovemRESUMO
Relationship between the data on hybridization of the cloned sequences of the satellite DNA III located in the short arm of the acrocentric chromosomes and the hybridization data on the cloned fragments of 28S and 18S rRNA genes, as well as the transcriptional activity of human nucleolus organizer was studied. Negative correlation between the content of the satellite DNA III and the number or expression of rRNA genes was shown.
