Background:By using the Near Infrared Spectroscopy technology, the phenomenon can be found that the content of oxyhemoglobin will decrease rapidly during the increasing load to
exhaustion. The dropping point is called the ‘break point’ by some scholars and it has been proved by experiment that the break point is highly correlated with anaerobic threshold. Therefore, the
break point can be used to replace the individual lactate threshold test method which is cumbersome and invasive, and to evaluate the individual aerobic capacity and the effect of sports training.
However, there are few reports dealing with the applications of the near infrared spectroscopy technology in sports training. The author applied the experimental method to short track speed skaters’
aerobic training, at the same time provided reference to the application of near infrared spectroscopy in sports training.
Methods:The author selected 10 short track speed skaters as the research subject, applied Monark 839E power to their bicycling incremental test to exhaustion, at the same time used
PortaLite real-time wireless blood oxygen monitoring system which fixed on test subjects athletes’ right vastus lateralis muscles, to find muscle blood oxygen parameters and heart rates during
exercise. After the increasing load test, the experimental data were analyzed to find out the corresponding heart rate of the break point, and the heart rate was corresponding to the individual
lactate threshold. Then we took lactate threshold intensity trainings twice a week in the next month, the total training time was 60 minutes once and it was divided into two groups. Heart rate was
controlled in the individual lactate threshold. 4 weeks later, repeat the incremental load test under the same conditions, to measure the ascension of test subjects athletes’ aerobic capacity.
Results:After 4 weeks of lactate threshold intensity training, the time when the content of oxyhemoglobin decreased rapidly, was delayed, during the period of increasing load to
exhaustion, the delay time was (2.2 ± 0.6) minutes. There was a significant difference in the time before and after the experiment (P<0.05); the immediate heart rate corresponding to this point was
also increased and the increased number of times is 5.5 ± 1.2. There was also a significant difference in heart rates before and after the experiment (P<0.05).
Conclusions:By applying near infrared spectroscopy in short track speed skaters’ aerobic training, the author achieved non-destructive determination of athlete individual lactate
threshold. After 4 weeks of lactate threshold intensity training, athletes’ aerobic capacity has been improved significantly, and it provided basis to the application of near infrared spectrum
technology in sports training.