Effect of aerobic exercise on cognition in younger adults: A randomized clinical trial
| Autor: | Qolamreza R. Razlighi, Anna MacKay-Brandt, Matthew N. Bartels, Richard P. Sloan, Paula S. McKinley, Seonjoo Lee, Kathleen M. McIntyre, Emil Agarunov, Yaakov Stern |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
medicine.medical_specialty genetic structures Physical fitness Apolipoprotein E4 Neuropsychological Tests Article law.invention 03 medical and health sciences Executive Function Young Adult 0302 clinical medicine Cognition Oxygen Consumption Randomized controlled trial law Internal medicine medicine Aerobic exercise Humans 030212 general & internal medicine Young adult Aerobic exercises Exercise Aerobic capacity Aged Cerebral Cortex Exercise Tolerance business.industry Age Factors Correction Organ Size Middle Aged Magnetic Resonance Imaging humanities Confidence interval Younger adults Physical therapy Neurology (clinical) business Body mass index 030217 neurology & neurosurgery |
| Zdroj: | Neurology |
| ISSN: | 1526-632X |
| Popis: | Objective To determine efficacy of aerobic exercise for cognitive function in younger healthy adults. Methods In a randomized, parallel-group, observer-masked, community-based clinical trial, 132 cognitively normal individuals aged 20–67 with below median aerobic capacity were randomly assigned to one of two 6-month, 4-times-weekly conditions: aerobic exercise and stretching/toning. Efficacy measures included aerobic capacity; cognitive function in several domains (executive function, episodic memory, processing speed, language, and attention), everyday function, body mass index (BMI), and cortical thickness. Results Aerobic capacity increased significantly (β = 2.718; p = 0.003), and BMI decreased significantly (β = −0.596; p = 0.013) in the aerobic exercise but not in the stretching/toning condition. Executive function improved significantly in the aerobic exercise condition; this effect was moderated by age (β = 0.018 SD/y; p = 0.028). At age 40, the executive function measure increased by 0.228 SD (95% confidence interval [CI] 0.007–0.448), and by 0.596 SD (95% CI 0.219–0.973) at age 60. Cortical thickness increased significantly in the aerobic exercise group in a left frontal region and did not interact with age. Controlling for age and baseline performance, individuals with at least one APOE e4 allele showed less improvement in executive function with aerobic exercise (β = 0.5129, 95% CI 0.0381–0.988; p = 0.0346). Conclusions This randomized clinical trial demonstrates the efficacy of aerobic exercise for cognition in adults age 20–67. The effect of aerobic exercise on executive function was more pronounced as age increased, suggesting that it may mitigate age-related declines. Increased cortical thickness suggests that aerobic exercise contributes to brain health in individuals as young as age 20. Clinicaltrials.gov identifier NCT01179958. Classification of evidence This study provides Class II evidence that for adults age 20–67 with below median aerobic capacity, aerobic exercise significantly improves executive function but not other measures of cognitive function. |
| Databáze: | OpenAIRE |
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