This document reviews research on time in physical education. It discusses how time has mainly been studied through the constructs of allocated learning time in PE (ALT-PE) and opportunities to respond (OTR). It also outlines some theoretical frameworks used in this research area, like Doyle's instructional management framework, and data collection methods like interval recording. The findings discussed indicate teaching behaviors impact student learning and achievement, and that teachers vary in how effectively they use instructional and managerial strategies. The conclusion discusses implications for future research on topics like games-based instruction, authentic assessment, and analyzing data by gender and skill level.