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Ice hockey is characterised by high intensity intermittent skating with rapid changes in velocity - Leaving Cert Physical Education - Question 6 - 2022
Question 6
Ice hockey is characterised by high intensity intermittent skating with rapid changes in velocity. The intensity and duration determine the extent of the contributio... show full transcript
Worked Solution & Example Answer:Ice hockey is characterised by high intensity intermittent skating with rapid changes in velocity - Leaving Cert Physical Education - Question 6 - 2022
Step 1
Anaerobic Alactic System
Answer
The Anaerobic Alactic System, also known as the ATP-PC system, is crucial for short bursts of high-intensity activities like ice hockey. During rapid sprints on the ice or when making quick directional changes, this energy system provides immediate energy without the need for oxygen. It primarily utilizes adenosine triphosphate (ATP) stored in the muscles and phosphocreatine (PC), replenishing ATP quickly for energy release over a duration of approximately 10 seconds. The system enables players to perform explosive movements crucial in high-paced games.
Step 2
Anaerobic Glycolytic System
Answer
Following the initial burst of energy from the Anaerobic Alactic System, the Anaerobic Glycolytic System becomes the primary energy source for slightly longer durations of higher intensity efforts, lasting about 30 seconds to 2 minutes. This system breaks down glucose into pyruvate, generating ATP while producing lactate as a byproduct. For ice hockey players, this system supports sustained vigorous activities such as prolonged skating during shift changes, allowing players to maintain performance during high-intensity intervals before fatigue sets in.