Revista Brasileira de Medicina do Esporte
Print version ISSN 1517-8692
FURTADO, Elen; SIMAO, Roberto and LEMOS, Adriana. Analysis of the oxygen intake, cardiac frequency and energetic expenditure during Jump Fit lessons. Rev Bras Med Esporte [online]. 2004, vol.10, n.5, pp. 371-375. ISSN 1517-8692. http://dx.doi.org/10.1590/S1517-86922004000500004.
Jump Fit lessons further the improvement of the general physical fitness through choreographies performed on an elastic surface with rhythm and movements variation with intervals and low impact. However, not much is known about the actual energetic expenditure and the behavior of the metabolic variables related to Jump Fit lessons. The objective of this study was to identify and to evaluate the behavior of the functional variables such as: heart rate (HR), oxygen intake (VO2), metabolic equivalent (MET) and energetic expenditure through routine spirometry measurement of a Jump Fit lesson. The tests were performed in four visits by 10 women who practice Jump Fit with age of 26.8 (± 7.2), body mass of 57.6 kg (± 6.8) and height of 162.2 cm (± 3.9). The spirometric evaluation of the several stages of the lesson revealed the following average results: HR of 160.3 bpm (± 8.9), VO2 of 1.59 L.min-1 (± 0.45), RQ 0.87 (± 0.10) and total energetic expenditure of 386.4 kcal (± 13.8). The Jump Fit lesson average intensity corresponded to 75% (± 7.7) of the VO2peak. For the analysis of the metabolic variables behavior in the different stages of the lessons, the results were treated through ANOVA for repeated measures with Bonferroni verification. The t-test was used to identify if differences between the functional responses in rest and EPOC phases occurred. The level of significance of p < 0.05 was adopted. It was concluded that from the magnitude of the functional responses, the Jump Fit lesson provides increase on the cardiorespiratory resistance, thus contributing effectively for the maintenance and improvement of the physical fitness and health in quality of life.
Keywords : Cardiorespiratory variables; Exercise physiology; Physical conditioning; Training; Physical fitness.