During all phases of the study, data were collected using a small handheld video recorder (i.e., a Kodak Play Sport). The
device was 9.5 cm long and 4.5 cm wide and recorded in 1080p high definition (HD). The compact size and clarity allowed the
data collector to adjust position easily and capture clear footage. After sessions, different data collectors watched the videos
on a larger computer screen to enable easier coding. Videos were coded using a data collection sheet designed specifically for
this study (available upon request).