English: Confocal intravital microscopy images from postcapillary venule of control group (non-exercised): Lysm-eGFP mice were anesthetized by intraperitoneal injection to obtain transmigration score was. The quadriceps muscle was exposed, and the vasculature was stained by PE-coupled anti-PECAM-1 antibody. Neutrophil-endothelium interactions within muscle microvasculature were recorded for twenty minutes using a confocal microscope. The number of transmigrating neutrophils was determined offline during the video playback analyses. Briefly, the video recording was paused at 1-min time intervals, and the numbers of neutrophils inside and outside of the postcapillary venules were counted. Representative video showing non-exercised animal.