|
1
|
Cox E, Bells S, Timmons BW, Laughlin S, Bouffet E, de Medeiros C, Beera K, Harasym D, Mabbott DJ. A controlled clinical crossover trial of exercise training to improve cognition and neural communication in pediatric brain tumor survivors. Clin Neurophysiol 2020; 131:1533-1547. [PMID: 32403066 DOI: 10.1016/j.clinph.2020.03.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 12/10/2019] [Accepted: 03/21/2020] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To assess the efficacy of aerobic exercise training to improve controlled attention, information processing speed and neural communication during increasing task load and rest in pediatric brain tumor survivors (PBTS) treated with cranial radiation. METHODS Participants completed visual-motor Go and Go/No-Go tasks during magnetoencephalography recording prior to and following the completion of 12-weeks of exercise training. Exercise-related changes in response accuracy and visual-motor latency were evaluated with Linear Mixed models. The Phase Lag Index (PLI) was used to estimate functional connectivity during task performance and rest. Changes in PLI values after exercise training were assessed using Partial Least Squares analysis. RESULTS Exercise training predicted sustained (12-weeks) improvement in response accuracy (p<0.05) during No-Go trials. Altered functional connectivity was detected in theta (4-7Hz) alpha (8-12Hz) and high gamma (60-100Hz) frequency bands (p<0.001) during Go and Go/No-Go trials. Significant changes in response latency and resting state connectivity were not detected. CONCLUSION These findings support the efficacy of aerobic exercise to improve controlled attention and enhance functional mechanisms under increasing task load in participants. SIGNIFICANCE It may be possible to harness the beneficial effects of exercise as therapy to promote cognitive recovery and enhance brain function in PBTS.
Collapse
Affiliation(s)
- Elizabeth Cox
- Neurosciences & Mental Health, SickKids, 686 Bay Street, Toronto, ON M5G 0A4, Canada; Department of Psychology, University of Toronto, 100 St. George Street, Toronto, ON M5S 3G3, Canada.
| | - Sonya Bells
- Neurosciences & Mental Health, SickKids, 686 Bay Street, Toronto, ON M5G 0A4, Canada.
| | - Brian W Timmons
- Department of Pediatrics, McMaster University, 1200 Main Street W., Hamilton, ON L8N 3Z5, Canada.
| | - Suzanne Laughlin
- Diagnostic Imaging, SickKids, 555 University Avenue, Toronto, ON M5G 1X8, Canada.
| | - Eric Bouffet
- Neurosciences & Mental Health, SickKids, 686 Bay Street, Toronto, ON M5G 0A4, Canada.
| | - Cynthia de Medeiros
- Neurosciences & Mental Health, SickKids, 686 Bay Street, Toronto, ON M5G 0A4, Canada.
| | - Kiran Beera
- Neurosciences & Mental Health, SickKids, 686 Bay Street, Toronto, ON M5G 0A4, Canada.
| | - Diana Harasym
- Neurosciences & Mental Health, SickKids, 686 Bay Street, Toronto, ON M5G 0A4, Canada.
| | - Donald J Mabbott
- Neurosciences & Mental Health, SickKids, 686 Bay Street, Toronto, ON M5G 0A4, Canada; Department of Psychology, University of Toronto, 100 St. George Street, Toronto, ON M5S 3G3, Canada.
| |
Collapse
|