A group of sports scientists want to investigate the effect of a high-protein recovery shake compared to a standard carbohydrate recovery drink on muscle soreness recovery.
Participants completed a high-intensity leg workout. They were then split into two groups. Group X drank the high-protein shake immediately post-workout, while Group Y drank the standard carbohydrate drink. After 24 hours, all participants completed a pressure-pain threshold test on their quadriceps, receiving a muscle soreness rating score out of 20 (where 20 was extremely sore and 0 was completely pain-free).
The experiment used an independent groups design.
Explain how this study could have been modified by using a matched pairs design.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
