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Lactacidemia And Cardiovascular Responses In Fitness Programs: 232 Board #83 May 27, 11

Mini-trampoline training (MT) and bench-step aerobics (BSA) represent some of the most popular fitness programs performed in gyms. However, there is little evidence on effects for both methodologies involving physiological parameters. PURPOSE: To compare the effects of a unique session of MT and BSA exercises on lactacidemia, cardiovascular and Rating of Perceived Exertion (RPE). METHODS: Eight healthy women (age: 33.5 ± 7.9 years) with prior experience (~ 1 year) with MT and BSA were recruited. The subjects were randomly submitted the experimental protocols (MT) and (BSA) with 48 hours between them. Each training session had duration of 20 minutes and musical cadence of 165 bpm for both MT and BSA procedures. Blood lactate concentration [LAC], Heart Rate (HR) and RPE was obtained in following moments: at rest, post-exercise, 3-min. post-exercise, 6-min. post-exercise and 9-min. post-exercise. HR and RPE also were obtained during physical exercises in 5th, 10th and 15th minutes. Mean and standard deviation of [LAC], HR and RPE were compared using repeated measures analysis of variance (ANOVA) (significance level of 5%) and a post-hoc analysis (Tukey-Kramer test) when necessary. RESULTS: All variables showed a significant increase between rest and post-exercise in both MT and BSA (p<0.05) but with no significant differences between MT versus BSA (p>0.05). In post-exercise moment, it was showed increase of ~20-25%, ~45-47% and ~50-52% for [LAC], HR and RPE, respectively. CONCLUSION: The data analyzed show that the proposed intervention generated a significant increase in [LAC] and cardiovascular variables but with no differences between MT and BSA. Thus, MT and BSA could be modulating to reach levels according to the ACSM recommendation for health promotion.