| Date | May 2016 | Marks available | 3 | Reference code | 16M.3.SL.tz0.14 |
| Level | Standard Level | Paper | Paper 3 | Time zone | time zone 0 |
| Command term | Discuss | Question number | 14 | Adapted from | N/A |
Question
Define the term glycemic index.
Discuss the implications of training on the recommended protein intake for athletes.
Markscheme
the ranking system for carbohydrates based on their immediate effect on blood glucose concentrations when compared with a reference food such as pure glucose✔
protein requirements are higher for individuals in training✔
strength training individuals need up to 1.6 g/kg per day / approximately twice RDA / strength training requires additional amino acids for protein synthesis✔
athletes in endurance training need 1.2 to 1.4 g/kg per day ‹depending on training intensity› / endurance training places greater demand on protein to increase mitochondrial content / endurance training places greater demand on protein as a fuel✔
protein ‹about 20 g› should be consumed early during the post-training recovery phase ‹immediately to two hours after exercise› / protein intake aids muscle recovery from training✔
Examiners report
disappointingly poor responses, with many not reporting the ‘immediate effect on blood glucose concentrations’.
a wide range of responses.
