عنوان مقاله [English]
Background and Aim: In the present study two types of endurance training as, high intensity interval training and
circuit resistance training on pulmonary function and body composition were studied among some overweight
females. Materials and Methods: In this research forty-five qualified females volunteered and were randomly divided
into three groups including circuit resistance, high-intensity interval and control groups. Subjects in the training group
were trained for 8 weeks with 3 time intervals. The resistance group practiced 2 circles, each consisting of 7 stations;
each station included 2 sets of 8-15 repetitions, with an intensity of 65-85% 1RM. In the interval group subjects performed training at intensity of 85-95% of maximum heart rate with 8-11 repetitions including 2 minutes running and 2 minutes active resting time between intervals (30-40% HRmax). Before and after the end of the training sessions,spirometry, body composition, muscular strength and endurance and VO2max were taken. Data were analyzed byone-way ANOVA, LSD post hoc and dependent t-test. Results: The results showed no significant difference between study groups concerning forced expiratory volume (FEV1), force vital capacity (FVC), FEV1/FVC, forced expiratory flow 25-75% (FEF25-75%), body weight, body mass index and wait to hip ratio (p< 0.05). Lean body mass significantly increased in the resistance group (p< 0.04) and only resistance training group showed a significant development in FVC compared to baseline values (p< 0.03). Resistance and interval training groups showed a significant decrease in percent body fat (p< 0.008 and poverweight females.
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