Anerobic threshold

SPORTS PHYSIOTHERAPY

1. Anaerobic Threshold K.Soundararajan 1 K. SOUNDARARAJAN, SRIHER

2. Objectives Glycolysis Cori’s cycle Anaerobic Threshold Anaerobic Threshold Testing Factors Influencing Threshold Training OBLA Reference 2 K. SOUNDARARAJAN, SRIHER

3. Cori’s Cycle Anaerobic / Lactate Threshold 3 K. SOUNDARARAJAN, SRIHER

4. Anaerobic Threshold The  anaerobic threshold  (AT) or lactic threshold (LT), the point at which  lactic acid  starts to accumulates in the muscles, is considered to be somewhere between 85% and 90% of your  maximum heart rate ( HR max ) . 4 K. SOUNDARARAJAN, SRIHER

5. Anaerobic Threshold Testing An anaerobic threshold (AT) or lactic threshold heart rate (LTHR) test general comprises of conducting an activity (running, cycling, swimming) for a period of 20 to 30 minutes whilst gradually increasing the effort at set points (distance or time), recording the heart rate a these points, until you are unable to continue with the activity. The recorded heart rates are then plotted on a graph and you will find the graph gradually rises to start with and then flattens before rising again. 5 K. SOUNDARARAJAN, SRIHER

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7. Factors Influencing Threshold Training 1. VO2 MAX-? The higher the vo2 max of an athlete the higher his threshold can be developed. 2. Muscle fibre type-Those athletes who have higher percentages of slow twitch fibres are able to exercise at higher intensities without much accumulation of metabolites. 3.Lactate /Metabolic waste removal ability- With training the athletes can stimulate lactate clearance from the blood &use it as an additional source of energy for the muscles. THE INDIVIUAL ANAEROBIC THRESHOLD CAN BE MEASURED UNDER THE FOLLOWING PARAMETERS-can be done on an ergometer or any other apparatus (to measure hr) , min 30 min long distance running. 7 K. SOUNDARARAJAN, SRIHER

8. OBLA 8 K. SOUNDARARAJAN, SRIHER

9. Reference DM VASUDEVAN et al.(2011) Carbohydrates –II ,Text book of Bio-chemistry for dental students, 5, pp.42-52 CONCONI, F. et al. (1982) Determination of the anaerobic threshold by a non-invasive field test in runners.  Journal of Applied Physiology , 52, p. 869-873 JONES, A. and DOUST, J. (1995) Lack of reliability in Conconi's heart rate deflection point.  International Journal of Sports Medicine , 16, p. 541-544 DAVIS, J.A. et al. (1979) Anaerobic threshold alterations caused by endurance training in middle-aged men.  Journal of Applied Physiology ,  46 (6), pp.1039-1046. DAVIS, J. A. et al. (1979) Anaerobic threshold alterations caused by endurance training in middle-aged men.  Journal of applied physiology: respiratory, environmental and exercise physiology , 46 (6), p. 1039-1046 YEH, M. P. et al. (1983) Anaerobic threshold' - Problems of determination and validation.  Journal of applied physiology: respiratory, environmental and exercise physiology , 55, p. 1178-1186 9 K. SOUNDARARAJAN, SRIHER

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