The Effects Of Respiratory Muscle Training On Lung Function And Step Index Of College Students

Abstract

PURPOSE: To observe the effects of short respiratory muscle training on lung function and step index of college students. METHODS: Fifteen students were recruited from Beijing Sport University, including 9 males (n = 9, age: 22.9 ± 1.14y, height: 174 ± 4.54 cm, weight: 70.1 ± 6.33 kg, BMI: 23.3 ± 1.46 kg/m2) and 6 females (n = 6, age: 22.4 ± 1.18y, height: 164 ± 2.1 cm, weight: 56 ± 7.03 kg, BMI: 20.2 ± 1.34 kg/m2). Respiratory muscle training consisted of 10 respiratory breaths per set using Lung Fitness equipment for 4 weeks (6 sets.d-1, three sets in the morning and evening respectively; 7 d.wk-1). The exhalation and inhalation resistance load are second and third gear according to the Lung Fitness equipment respectively. At baseline and after 4 weeks, lung function, heart rate, step index, RPE and RPB were evaluated. Paired t-tests were used to compare pre- and post-variables. RESULTS: 1. Forced vital capacity (3.47 ± 0.85 L) and forced expiratory volume in 1 second (3.27 ± 0.74 L) were significantly increased (P < 0.05). 2. RPE (13.53 ± 1.84) was significantly decreased after completion of step test (P < 0.05). 3. The step index (54.20 ± 9.22) was significantly increased (P < 0.05). CONCLUSIONS: Four weeks of respiratory muscle training alone can significantly improve the cardiopulmonary function of college students.