Compara？？o das respostas cardiorrespiratórias de um exercício de hidroginástica com e sem deslocamento horizontal nos meios terrestre e aquático

the aim of the study was to compare the cardiorespiratory responses during an hydrogymnastics exercise performed with and without horizontal movement on land environment (le) and in a deep (ds) and in a shallow swimming pool (ss). six young women performed the exercise during four minutes in each environment (le, ds and ss) and situation (with and without horizontal movement) in a cadence of 80 bpm. the exercise consisted in a hip flexion/extension while the arms simulating a running movement. the heart rate (hr) and oxygen uptake (vo2 ) were veriefied during the last minute in each exercise and the rate of perceived exertion (rpe) was collected in the ending of the exercise. to variables comparisons was used anova two-way for repeated measures with factors environment and situation (p < 0,05). for all cardiorespiratory variables analyzed, ss exercise were lower than that found on le. although, no difference was observed in the exercise performed on le or in ds, except for the hr, that was lower during ds. acording to the different situations, higher hr value was found during the exercise with horizontal movement when compared with the exercise without horizontal movement in the ds. these findings suggest the possibility to perform the exercise analyzed with similar energy expenditure and lower fc in ds when compared with exercise in le. it is very important for people that need similar energy expenditure and lower cardiovascular overload during aquatic exercise.