Effects Of 8-week Sprint Interval Training On The Sport Performance And Oxygen Metabolism Mechanism Of Female Badminton Players In Colleges

Objective:This study was aimed to:（1）investigate the effects of physiological functions of Sprint Interval Training（SIT）on the aerobic capacity of elite female badminton players;（2）explore the potential peripheral mechanisms of oxygen transport and utilization within the process.Methods:Sixteen elite female badminton players were selected and paired divided into experimental group（SIT group）and control group（CON group）.The SIT group underwent three sprint interval trainings per week,including two power bike trainings and one multi-ball training.The CON group performed two Fartlek runs and one regular shuttlecock-feeding training per week for a total of eight weeks.Before and after intervention,the two groups of athletes were tested for aerobic capacity via YO-YO IR2,maximal oxygen uptake,lactate clearance rate,and the arterial occlusion muscle oxygen content test performed by Near Infrared Spectroscopy（NIRS）instrument.Subsequently,players’skeletal muscle oxyhemoglobin,muscle oxygen consumption,oxygen,hemoglobin recovery and other related muscle oxygen saturation parameters were compared between two groups using repeated-measures ANOVA,considering pre-post effect.Results:（1）The running distance of YO-YO IR2 of SIT group increased from 725±132.9 m to840±126.5 m（p<0.05）,which was significantly higher than that of CON group（p<0.05）.（2）For SIT group:VT-VO₂ increased from 1940.1±112.8 ml/min to 2176.9±78.6ml/min（p<0.05）,VT/VO₂max increased from 75±4%to 82±4%（p<0.05）,and the lactate clearance rate was raised from 21±5%to 27±4%（p<0.05）,and the increases were significantly higher than those of CON group（p<0.05）.（3）The△O₂Hb of SIT group decreased from 4.8±0.5μm to 4.4±0.5μm（p<0.05）,the oxygen consumption of muscle decreased from 0.62±0.06 ml O₂/min/100g to 0.57±0.06 ml O₂/min/100g（p<0.05）,and the full recovery time of O₂Hb declined from 9.99±1.9 s to 9.44±1.5 s（p<0.05）,O₂Hb over-recovery increased from 4.79±0.5μm to 5.19±0.6μm（p<0.05）,and the change ranges were significantly higher than those of CON group（p<0.05）.Conclusion:As a training method,SIT can improve maximum aerobic working capacity,aerobic recovery ability and oxygen utilization efficiency by improving the oxygen uptake and utilization ability of badminton players’skeletal muscles,thus boosting their aerobic capacity and performance.