The Research On The Changing Characteristic Of Heart Rate, Blood Lactate And SEMG During The Increasing Load Of Treadmill Exercise

Purposes: The surface of the technical application of such a scar detection methods, the increase in the machine in motion was carried out according to the changing characteristics and sport's heart rate and blood lactate a comparative analysis, the difference between the three. to formulate and implement training programs and more effective and improve sports training to exercise monitoring some constructive views and theoretical reference.Methods: Capital physical education college sports department nine subjects who ran machine load movement, increasing the whole real-time monitor and record strands rectus muscle table semg sections such as electric chart changes, synchronous record in movement heart rate and every class load were observed and the blood lactic acid concentration before and after exercise.Conclusion:1 As exercise load increases, heart rate and auto-merging iEMG blood lactic acid concentration, appeared a rising trend. Value In the third class load iEMG value blood lactic acid, there is a clear inflection point, so can speculate muscle power value more blood lactic acid earlier in muscle activity reflects movement.2 As exercise load increasing, gastrocnemius laterally auto-merging the MF value trend of a gradually decline, tibialis anterior muscle, perpendicular spinal muscular, stocks, shares medial rectus muscle MF biceps value rise, the MF value movement first decline, sports in early rising trend late, and heart rate, blood lactate concentrations increasing over time rise gradually, visible muscle electricity index more heart rate, blood lactic acid to better reflect change characteristics of skeletal muscle local muscle activity.3 In run sets in motion, with increasing load load strength increases, pretibial muscle and the mean iEMG gastrocnemius laterally rise gradually, and exercise intensity, including gastrocnemius present linear correlation to the outside of the iEMG mean in athletic process iEMG value rise, MF value falls, explain this muscle yi fatigue, in fitness. 4 Nine subjects table when power, frequency index semg changing characteristics of each are not identical, the mean of iEMG 8 subjects changes small, namely discharge relatively small, so total when muscle activity test object to comprehensive consideration of the physiological indexes, muscle power contribution rate, such ability more accurately reflect the body in motion local muscle and integral change characteristics.5 Plus or minus four 1.4 years engaged in 6.1 track and field track events of the subjects of vertical spinal muscular iEMG load strength increases with the rise, MF value rise, they are athletics level 2 players, hint at running through strengthening in the training of core strength to make action technology is more reasonable.6 In run sets, vertical load movement in spinal muscular watch of time-frequency domain semg electricity index range of the most obvious changes, its work with the increase of contribution of sports load also gradually higher than other muscles, can speculate running technology action the shaft spinal muscular bear load is more and more big.