Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:Participants ran at 10 kph for a 2-min familiarisation period, after which marker coordinates were recorded for five gait cycles (Scurr et al., 2010, 2011) in three breast support conditions (no bra, everyday bra and sports bra).
Category: