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Effects of acute interval handgrip exercise on cognitive performance.

Takuro Washio1, Kazuya Suzuki2, Shotaro Saito2

  • 1Department of Biomedical Engineering, Toyo University, Kawagoe-Shi, Saitama, Japan; Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan.

Physiology & Behavior
|January 25, 2021
PubMed
Summary

Interval handgrip exercise improves executive function processing speed in healthy young adults. This exercise mode enhances cognitive function, even without significant changes in blood pressure or cerebral blood flow.

Keywords:
Cerebral blood flowExercise pressor reflexGo/No-Go taskMemory recognition taskStatic exercise

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Area of Science:

  • Exercise Physiology
  • Cognitive Neuroscience
  • Cardiovascular Health

Background:

  • Dynamic exercise enhances cognitive performance, but the effects of interval handgrip (HG) exercise on cognition are unclear.
  • Interval HG exercise is known to reduce resting blood pressure, but its impact on cognitive functions requires further investigation.

Purpose of the Study:

  • To investigate the acute effects of interval handgrip (HG) exercise on cognitive performance in young healthy subjects.
  • To determine if interval HG exercise influences memory recognition and executive function.

Main Methods:

  • 17 young healthy subjects underwent cognitive assessments before and after a resting control and an interval HG exercise protocol.
  • The protocol involved four 2-min HG exercise bouts at 25% maximum voluntary contraction with 3-min recovery.
  • Mean arterial blood pressure (MAP) and middle cerebral artery blood velocity (MCA V) were monitored, alongside memory recognition and Go/No-Go tasks.

Main Results:

  • Interval HG exercise increased MAP and MCA V, which returned to baseline during recovery.
  • No significant changes were observed in memory recognition reaction time or accuracy.
  • Significantly shorter reaction times were found in the Go/No-Go task (executive function) during the exercise condition compared to the control.

Conclusions:

  • Acute interval HG exercise can improve processing speed in executive function in young healthy individuals.
  • These cognitive benefits occur independently of significant changes in hemodynamic parameters.
  • Interval HG exercise presents a viable option for enhancing executive function processing speed, irrespective of cardiovascular adaptations.