لاله سلیم

Face masks are crucial for preventing respiratory diseases; however, limited research has examined their specific effects on children’s exercise performance, particularly in terms of physiological and perceptual responses at different exercise intensities. Aim: This study examines the effects of N-95 and surgical masks on children’s physiological and perceptual responses during exercise at varying intensities. Martials and Methods: Twenty healthy children (age, 11.23 ± 0.59 years) performed in three 6-minute phases of a treadmill protocol at 25%, 50%, and 75% of maximal oxygen uptake, while wearing an N-95 mask, a surgical mask, or no mask. Physiological measurements (heart rate, blood lactate, oxygen saturation) and perceptual measurements (rate of perceived exertion, discomfort) were assessed. Results: HR, PRE, and BLa increased with intensity (p ≥ 0.001), with N-95 masks showing the highest HR and BLa compared to surgical masks and no masks at high intensity. SpO2 decreased significantly with N-95 masks at moderate (p=0.018) and high intensities (p=0.008). Discomfort, especially in breath resistance and fatigue, was greater with N-95 masks. Conclusion: Face masks, particularly N-95, significantly increase cardiovascular and metabolic demands during exercise, especially at higher intensities. Balancing respiratory protection with comfort is essential for safe exercise in children during public health crises