Effect of inspiratory muscle training at high altitude on energy cost, arterial oxygen saturation and 1500m performance of national team's endurance runners

Abstract

Purpose: The aim of this study was to investigate the effect of inspiratory muscle training at high altitude on Energy cost,peripheral capillary oxygen saturation and 1500m performance among endurance runners. Methods: The study wascarried on a group of Twelve endurance male runners (age: 244.41±3.14yrs, height: 180.5±4.23cm, weight: 66.75±3.46kg, Body mass index: 20.53±1.07) among Iranian national team were randomly divided into case IMT training and controlgroup in hypoxic condition. Exhaustive testing 1500m, energy coast, strength Index and arterial oxygen saturation testswere taken before and 24hour after. Training program include same continues, interval, aerobic and resistance training fortwo groups. Runners performed 16 training session per week in high live train high and low (LHTH,L) within four weeks(just 3 training sessions per week at even days performed at low altitude). Results: Data were analyzed by analysis ofANOVA repeated measure (P≤0.05). Inspiratory muscle training at hypoxia due to significant decrease in 1500m runningtime, inspiratory muscle strength and Energy coast in both group, but the differences in peripheral capillary oxygensaturation were not significant (P≤0.05). Conclusions: This study suggests that using inspiratory muscle training alongwith specified training in hypoxia increases inspiratory muscle strength and reduction in the work of breathing meanwhileit decreases ventilation and 1500meter running time in lower altitude.

Keywords

• respiratory muscle training
• hypoxia
• spo2
• endurance performance
• energy cost