F-39 Free Communication/Poster - Warm-up and Recovery: JUNE 3, 2011 1:00 PM - 6:00 PM: ROOM: Hall B
Our laboratory recently found that static stretching prior to endurance running decreased performance in trained males, while dynamic stretching had no effect on endurance performance in a similar population. However, a sub-maximal running warm-up has been shown in some cases to increase endurance performance.
PURPOSE: The purpose of this study was to investigate the effects of a sub-maximal warm-up (SWU) on running endurance performance during a 30-minute time trial in trained male runners.
METHODS: Ten well trained male distance runners aged 21 ± 2 yrs with an average VO2max of 67.5 ± 4.7 mL/kg/min were recruited. Subjects reported to the laboratory on 4 separate days. On day 1, anthropometrics and VO2max were determined. On days 3 and 4, subjects performed a 30-minute time trial in which they were instructed to run as far as possible. Subjects were in control of their own speed, but, they were not permitted to view speed or distance. Performance was measured as the distance covered in the 30-minute time trial. Before the run on days 3 and 4, subjects were randomly assigned to perform either a SWU consisting of a 6-minute run at 45, 55, and 65% VO2max (2 minutes each) followed by a 2-minute walk at 2 mph; or sat quietly for 8 minutes (Control). VO2 and tympanic temperature were also taken before and after SWU or Control. One way and two way ANOVAs were used to analyze data. Significance was accepted at p<0.05.
RESULTS: Average VO2 values increased significantly from pre-SWU (4.6 ± 1.1 mL/kg/min) to post-SWU (12.8 ± 1.0 mL/kg/min), but did not change in the Control (4.7 ± 0.6 to 5.0 ± 1.3 mL/kg/min). Average resting temperature values also increased significantly from pre-SWU (36.3 ± 0.5 C°) to post-SWU (36.4 ± 0.5 C°), but did not change in the Control (36.1 ± 0.3 to 36.2 ± 0.4 C°). There was no significant difference in distance run between SWU (7.72 ± 0.48 km) and Control (7.56 ± 0.60 km).
CONCLUSION: These findings suggest that a 6-minute SWU, similar to dynamic stretching, does not significantly affect endurance performance in well trained male runners during a 30-minute time trial.