| Title: |
Moderate intensity exercise reduces impacts of simulated altitude on cognition. |
| Authors: |
JIMENEZ, LAURA Q., ARWARI, BRIAN, PERRY, ARLETTE, SIGNORILE, JOSEPH, AHN, SOYEON, KAMAKAWIWO'OLE, SARAH, JACOBS, KEVIN A. |
| Source: |
Biology of Exercise; 2019, Vol. 15 Issue 2, p5-22, 18p, 1 Diagram, 1 Chart, 4 Graphs |
| Subject Terms: |
EXERCISE, COGNITIVE ability, REACTION time |
| Abstract: |
This study examined the cognitive and neurophysiological effects of acute exposure to simulated moderate and high altitudes at rest and during exercise to delineate whether there is a level of simulated altitude beyond which executive cognitive functions are impaired and whether exercise can ameliorate cognitive function during exposure. Fourteen recreationally active men and women participated in this study. Each participant completed six randomized experimental days consisting of three simulated altitude conditions: sea level (SL), simulated moderate altitude (MA) or simulated high altitude (HA) and two exercise conditions: rest or moderate intensity cycling exercise. Dependent variables included accuracy and reaction time on two executive function tasks, and amplitude and latency of their associated event-related potentials from EEG recordings. For the Flanker task, both MA and HA slowed reaction time, while exercise improved it. For the Stroop task, only HA slowed reaction time, while exercise improved it. Accuracy was preserved under all conditions. These effects were partially explained by alterations in associated event-related potentials. Acute exposure to simulated altitudes slows cognitive reaction time on executive function tasks while task accuracy is preserved. An acute bout of moderate intensity cycling improves reaction times so that they are comparable to those achieved at SL. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
