Isometric training program in the response of cardiovascular and respiratory parameters

Abstract

Abstract
Objective: To evaluate the effects of an 8-week isometric training program on inspiratory and expiratory pressure, systolic blood pressure, Vo2 max, ventilatory thresholds, ventilation, respiratory rate, and tidal volume. Materials and methods: A quasi-experimental study with simple random probabilistic sampling was conducted. A total of 25 individuals participated (mean age: 25.88±3.6 years; weight: 72.97±12.4 kg; height: 179±0.09 cm; body fat percentage: 24.03±2.5%; muscle mass percentage: 41.56±2.3%). Results: Isometric training resulted in significant improvements in several respiratory and cardiovascular variables. Respiratory rate significantly decreased (p < 0.001), while ventilation (p < 0.001), tidal volume (p < 0.001), and lung capacity (p < 0.001) increased. Maximal inspiratory and expiratory pressures also showed significant improvements (p < 0.001). Systolic blood pressure slightly decreased but was not statistically significant (p = 1.000). Ventilatory thresholds showed a decrease in VT1 and an increase in VT2 (p < 0.001), with a significant increase in VO2 max (p < 0.001). Conclusion: Isometric strength training significantly improves respiratory and cardiovascular parameters, benefiting the physical and functional health of healthy individuals with risk factors.