A 70 kg elite endurance athlete is recommended to consume up to 200% more protein than the RDA in extreme training phases. Calculate the athlete's minimum and maximum daily protein intake if: (a) RDA = 0.8 g/kg (minimum), and (b) the athlete needs 200% more than the RDA. Show calculations.

• A. Minimum 35 g/day and up to 105 g/day, which would result from using a lower RDA of 0.5 g/kg and then tripling it
• B. Minimum 56 g/day (RDA), up to 224 g/day (a 300% increase beyond the RDA) which incorrectly triples the 'more' rather than applying the stated 200% more rule
• C. Minimum 56 g/day (RDA), up to 168 g/day (RDA + 200% more)
• D. Minimum 56 g/day (RDA), up to 112 g/day (a 100% increase rather than 200%)

Answer: (C)