"THERE ARE MANY FACTORS INVOLVED IN THE PREPARATION AND PERFORMANCE OF AN ATHLETE FOR OPTIMUM SPORTING PERFORMANCE"SPORT : BASKETBALL1. Describe the chain of events in the production and use o energy when competing in your chosen sport.
Physiologically basketball requires energy from both the aerobic and anaerobic energy systems. This combination of energy requirements is often referred to as an integration of energy supply systems on a continuum over time.
Immediate energyThe ATP-PC system, short duration and high intensity such as a rebound jump, fast pass or a maximum acceleration with a change of direction, these all require an immediate and rapid energy supply. The ATP-PC energy system is nonoxidative - it does not use oxygen. Instead, this system generates energy through the use of adenosine triphosphate (ATP) and creatine phosphate (CP). The high energy phosphates adenosine triphosphate (ATP) is needed for energy in muscle contractions which is provided by the phosphocreatine (PCr) stored within muscles.
The adenosine triphosphate creates energy through the breaking of one of its bonds with the phosphates creating adenosine diphoshphate, this molecule can be reused for energy through the instant Creatine phosphate which breaks its bonds which itself creates energy but as well as donating its phosphate for further energy production through ATP. There are limited stores of PCr and this system only lasts for about 10-12 seconds at maximal intensity. Within 2 minutes most of the ATP and CP supplies are restored. McInnes et al (1995) noted high intensity run efforts(requiring the ATP-PC system) occurring on average once every 21 seconds during "live time" for a 1.7 second duration. Basketball does often require high intensity periods of work longer than this and then uses the lactate or aerobic system.
The lactic acid systemThe lactic acid system is used in the following...