Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

No cumulative effects for one or two previous concussions.

G L Iverson1, B L Brooks, M R Lovell

  • 1Department of Psychiatry, University of British Columbia, Vancouver, BC, Canada. giverson@interchange.ubc.ca

British Journal of Sports Medicine
|December 24, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

All-cause mortality and suicide after pediatric traumatic brain injury: a 20-year nationwide study in Finland.

Public health·2024
Same author

Implementation of active injury management (AIM) in youth with acute concussion: A randomized controlled trial.

Contemporary clinical trials·2022
Same author

Usefulness of Video Review of Possible Concussions in National Youth Rugby League.

International journal of sports medicine·2016
Same author

A Video Analysis of Use of the New 'Concussion Interchange Rule' in the National Rugby League.

International journal of sports medicine·2016
Same author

Improving the system for managing cancer pain.

Internal medicine journal·2015
Same author

A pilot study of active rehabilitation for adolescents who are slow to recover from sport-related concussion.

Scandinavian journal of medicine & science in sports·2015
Same journal

Do blood flow restriction exercises offer additional benefits when compared to conventional exercises in musculoskeletal rehabilitation? A systematic review and meta-analysis.

British journal of sports medicine·2026
Same journal

Prevalence of eating disorders and disordered eating in athletes: a systematic review and meta-analysis.

British journal of sports medicine·2026
Same journal

Enhancing mountain safety through personalised exercise prescription: the MOVE project (PhD Academy Award).

British journal of sports medicine·2026
Same journal

Effectiveness of office-based vergence/accommodative therapy with movement for accommodative dysfunction in concussion-related convergence insufficiency: a secondary analysis of the CONCUSS randomised clinical trial.

British journal of sports medicine·2026
Same journal

Infographic. Active commuting is linked to lower coronary atherosclerosis.

British journal of sports medicine·2026
Same journal

Optimising exercise prescription for cancer-related fatigue, lean mass, physical function and muscle strength in women with breast cancer: a systematic review with dose-response network meta-analysis.

British journal of sports medicine·2026
See all related articles

Athletes with one or two prior concussions showed no significant differences in preseason cognitive tests or symptom reporting. This suggests that any cumulative effects from mild concussion history are undetectable with current methods.

Area of Science:

  • Sports Medicine
  • Neuroscience
  • Psychology

Background:

  • Growing public and clinical interest in the cumulative effects of concussion.
  • Understanding the long-term impact of head injuries in athletes is crucial.

Purpose of the Study:

  • To investigate if a history of one or two concussions impacts preseason neuropsychological performance.
  • To determine if prior concussions affect symptom reporting in athletes before a new season.

Main Methods:

  • 867 male amateur athletes (high school and university) completed ImPACT v2.0 preseason testing.
  • Athletes were grouped based on concussion history: none (664), one (149), or two (54).
  • Multivariate analysis of variance assessed differences in cognitive scores and symptom reporting.

Related Experiment Videos

Main Results:

  • No significant multivariate or individual score differences were found between groups.
  • One or two previous concussions did not measurably affect preseason neuropsychological test performance.
  • Symptom reporting remained consistent across athletes regardless of prior concussion history.

Conclusions:

  • The study found no detectable cumulative effect of one or two previous concussions on cognitive function or symptoms.
  • Any potential cumulative effects are likely too small to be identified with the current testing methodology.
  • Further research may be needed to explore subtle or long-term impacts of repeated head injuries.