Describe the impact of exercise-induced thermal stress on digestive enzyme production. (3 marks)
--- 7 WORK AREA LINES (style=lined) ---
Show Answers Only
Sample Answer
Exercise-induced thermal stress affects digestive enzyme production by:
- Reducing pancreatic secretion: Because blood flow diverts to working muscles, reduced secretion of digestive enzymes by the pancreas occurs.
- Decreasing salivary amylase: Initial carbohydrate breakdown is less efficient due to decreased salivary amylase.
- Impairing enzyme efficiency: Existing enzyme efficiency becomes impaired due to altered temperature conditions.
- Slowing overall digestive processes: As the body prioritises cooling and muscle function overall digestive processes are slowed.
These changes can affect nutrient breakdown during and after exercise, potentially leading to digestive discomfort.
Show Worked Solution
Sample Answer
Exercise-induced thermal stress affects digestive enzyme production by:
- Reducing pancreatic secretion: Because blood flow diverts to working muscles, reduced secretion of digestive enzymes by the pancreas occurs.
- Decreasing salivary amylase: Initial carbohydrate breakdown is less efficient due to decreased salivary amylase.
- Impairing enzyme efficiency: Existing enzyme efficiency becomes impaired due to altered temperature conditions.
- Slowing overall digestive processes: As the body prioritises cooling and muscle function overall digestive processes are slowed.
These changes can affect nutrient breakdown during and after exercise, potentially leading to digestive discomfort.