안정시 및 운동 강도에 따른 고교축구선수의 뇌혈류 속도 및 저항지수의 변화

Abstract

The purpose of this research is to prepare exercise stability/safety by predicting possible dangerous situations during competitions in advance and presenting appropriate exercise intensity based on TCD(Transcranial Doppler ultrasound) analysis of Systolic, Diastolic and Mean Blood Flow Velocity, Pulsatility Index(PI) and Resistive Index(RI) from MCA according to exercise intensity as well as at rest. The subjects were 10 soccer players from high school over 5 years in experience. To analyze Cerebral Blood Flow, PI and RI Changes according to exercise intensity, treadmill test was performed among single group at rest and with moderate, high and maximal intensity. In comparison with the velocities at rest, Systolic, Diastolic and Mean Blood Velocity were increased at moderate and high intensity but they were decreased at maximal intensity(p0.05). On the other hand, Pulsatility and Resistive Index were increased at all the other intensities(p0.05). In a repeated measured One-way ANOVA, there were significant differences between the each measured values-blood velocities and indexes-and the various exercise intensities (p0.05). In a post Hoc test, there were significant differences between rest and the other intensities in Systolic Blood Velocity ; rest and moderate/high intensity, moderate and maximal intensity, and high and maximal intensity in Diastolic Blood Velocity ; rest and moderate/high/maximal intensity, and high and maximal intensity in Mean Blood Velocity ; rest and moderate/maximal intensity, and moderate and high intensity in Pulsatility and Resistive Index (p0.05).