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D-14 Thematic Poster - Sleep Thursday, May 28, 2020, 1: 30 PM - 3: 30 PM Room: CC-2000

Sleep And Prior Exercise Influence Wingate Performance - Should These Be Controlled When Assessing Anaerobic Performance?

1859 Board #5 May 28 1:30 PM - 3:30 PM

Jeremic, Ryan W.; Jensen, Courtney D.; VanNess, J. Mark

Author Information
Medicine & Science in Sports & Exercise: July 2020 - Volume 52 - Issue 7S - p 501
doi: 10.1249/01.mss.0000679592.76106.35
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A variety of factors can influence anaerobic performance, including time of day, training status, fatigue, sleep duration and quality, psychological state, hydration, and food intake. These variables may interact to influence performance.

PURPOSE: To compare anaerobic performance in individuals across three time periods of the day (morning, afternoon, and evening), and determine if sleep and/or prior exercise influence performance.

METHODS: Ten healthy, physically active adults were recruited to do three 30-second Wingate tests: Morning (6:00am to 11:59am), afternoon (12:00pm to 4:59pm), and evening (5:00pm to 9:00pm). The order of tests was randomized and all testing was completed over one week. Prior to each test, subjects were provided similar instructions, and they completed pre-test questionnaires evaluating the duration of sleep the previous night and whether they abstained from strenuous exercise during the past 24 hours. Standard 30-second Wingate parameters were collected during each trial. Repeated measures ANOVA examined performance across each time period.

RESULTS: All subjects completed the three testing protocols. There was no main effect of time of day on peak power (p=0.989). When subjects were grouped based on prior strenuous exercise there was a trend for significance in peak power (p=0.070) and a significant change in maximum speed (p=0.039). Those who abstained from strenuous exercise had higher peak power (32.7% improvement) and maximum speed (21.5% improvement). When subjects were grouped based on sleep, similar results were observed: those who slept at least seven hours had higher peak power (17.6% improvement; p=0.055) and higher maximum speed (15.7% improvement; p=0.036).

CONCLUSION: Pre-screening questions or guidelines for sleep and activity may be important to control when examining anaerobic performance. When subjects abstain from strenuous exercise and get adequate sleep they demonstrate improved Wingate performance.

Copyright © 2020 by the American College of Sports Medicine