Popliteal vein markers of venous return for each sports compression garment condition. Markers measured include (A) CSA, (B) Vmean, (C) Vpeak, and (D) venous blood flow. Bars are the mean ± SD. Individual colored data points indicate individual participants. * p < 0.05, significant condition effect; # p < 0.01, significant effect compared to SHORTS; † p < 0.05, significant effect compared to CON. a Small effect compared to CON; b Medium effect compared to CON; c Small effect compared to SHORTS; d Medium effect compared to SOCKS. CON = no compression; CSA = cross-sectional area; SHORTS = compression shorts; SOCKS = compression socks; TIGHTS = compression tights; Vmean = mean flow velocity; Vpeak = peak flow velocity.