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The Effects of Load Carriage and Physical Fatigue on Cognitive Performance.

Eddy MD, Hasselquist L, Giles G, Hayes JF, Howe J, Rourke J, Coyne M, O'Donovan M, Batty J, BrunyƩ TT, Mahoney CR - PLoS ONE (2015)

Bottom Line: In the current study, ten participants walked for two hours while carrying no load or a 40 kg load.There were also shifts in response criterion towards responding yes and decreased sensitivity in responding in the loaded condition compared to the unloaded condition.In the visual target detection there were no reliable effects of load carriage in the overall analysis however, there were slower reaction times in the loaded compared to unloaded condition during the second hour.

View Article: PubMed Central - PubMed

Affiliation: U.S. Army Natick Soldier Research, Development, and Engineering Center, Natick, Massachusetts, United States of America; Department of Psychology, Tufts University, Medford, Massachusetts, United States of America.

ABSTRACT
In the current study, ten participants walked for two hours while carrying no load or a 40 kg load. During the second hour, treadmill grade was manipulated between a constant downhill or changing between flat, uphill, and downhill grades. Throughout the prolonged walk, participants performed two cognitive tasks, an auditory go no/go task and a visual target detection task. The main findings were that the number of false alarms increased over time in the loaded condition relative to the unloaded condition on the go no/go auditory task. There were also shifts in response criterion towards responding yes and decreased sensitivity in responding in the loaded condition compared to the unloaded condition. In the visual target detection there were no reliable effects of load carriage in the overall analysis however, there were slower reaction times in the loaded compared to unloaded condition during the second hour.

No MeSH data available.


Related in: MedlinePlus

Overview of experimental session with timing of data collections (in minutes), and changes in treadmill grade.
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pone.0130817.g001: Overview of experimental session with timing of data collections (in minutes), and changes in treadmill grade.

Mentions: Starting at 15 minutes into walking, participants performed the visual target detection task every 20 minutes up until 100 minutes into walking for a total of five 5 minutes blocks of the visual target detection task. In between both cognitive tasks, percent of VO2Peak was measured. See Fig 1 for an overview of the experimental session.


The Effects of Load Carriage and Physical Fatigue on Cognitive Performance.

Eddy MD, Hasselquist L, Giles G, Hayes JF, Howe J, Rourke J, Coyne M, O'Donovan M, Batty J, BrunyƩ TT, Mahoney CR - PLoS ONE (2015)

Overview of experimental session with timing of data collections (in minutes), and changes in treadmill grade.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4496096&req=5

pone.0130817.g001: Overview of experimental session with timing of data collections (in minutes), and changes in treadmill grade.
Mentions: Starting at 15 minutes into walking, participants performed the visual target detection task every 20 minutes up until 100 minutes into walking for a total of five 5 minutes blocks of the visual target detection task. In between both cognitive tasks, percent of VO2Peak was measured. See Fig 1 for an overview of the experimental session.

Bottom Line: In the current study, ten participants walked for two hours while carrying no load or a 40 kg load.There were also shifts in response criterion towards responding yes and decreased sensitivity in responding in the loaded condition compared to the unloaded condition.In the visual target detection there were no reliable effects of load carriage in the overall analysis however, there were slower reaction times in the loaded compared to unloaded condition during the second hour.

View Article: PubMed Central - PubMed

Affiliation: U.S. Army Natick Soldier Research, Development, and Engineering Center, Natick, Massachusetts, United States of America; Department of Psychology, Tufts University, Medford, Massachusetts, United States of America.

ABSTRACT
In the current study, ten participants walked for two hours while carrying no load or a 40 kg load. During the second hour, treadmill grade was manipulated between a constant downhill or changing between flat, uphill, and downhill grades. Throughout the prolonged walk, participants performed two cognitive tasks, an auditory go no/go task and a visual target detection task. The main findings were that the number of false alarms increased over time in the loaded condition relative to the unloaded condition on the go no/go auditory task. There were also shifts in response criterion towards responding yes and decreased sensitivity in responding in the loaded condition compared to the unloaded condition. In the visual target detection there were no reliable effects of load carriage in the overall analysis however, there were slower reaction times in the loaded compared to unloaded condition during the second hour.

No MeSH data available.


Related in: MedlinePlus