Resumen de Physiological Responses to Fitness Activities: A Comparaison between Land-Based and Water Aerobics Exercise
Piero Benelli, Massimiliano Ditroilo, Giusuppe De Vito
This study compared the heart rate (HR) and blood lactate (BL) responses in young healthy women performing the same routine of aerobics exercise in 3 different conditions: on land, in shallow water (0.8 m), and in deep water (1.4 m). The average age and body mass index (BMI) of the group were 27.4 years and 22.6 kg·m-2, respectively. The highest HR and BL values were reached during land aerobics (median HR values were 138.0 and 161.5 b·min-1, and lactate values were 3.10 and 5.65 mmol·L-1 at slow and at faster pace, respectively). These parameters were progressively reduced going from shallow water (121.5 and 154.0 b·min-1, 1.75 and 3.15 mmol·L-1) to deep water (97.5 and 113.5 b·min-1, 1.70 and 1.75 mmol·L-1). The HR measured as percentage of maximum HR varied from 48.43% to 77.53% depending on the water depth and the pace. These data indicate that exercise in water significantly reduces HR and BL production compared with the same exercise performed on land.
