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Articles by M. W Collins
Total Records ( 2 ) for M. W Collins
  A. C Colvin , J Mullen , M. R Lovell , R. V West , M. W Collins and M. Groh
  Background

This study was designed to investigate differences in recovery in male and female soccer athletes.

Hypotheses

Soccer players with a history of concussion will perform worse on neurocognitive testing than players without a history of concussion. Furthermore, female athletes will demonstrate poorer performance on neurocognitive testing than male athletes.

Study Design

Cohort study (prognosis): Level of evidence, 2.

Methods

Computer-based neuropsychological testing using reaction time, memory, and visual motor-speed composite scores of the ImPACT test battery was performed postconcussion in soccer players ranging in age from 8 to 24 years (N = 234; 141 females, 93 males). A multivariate analysis of variance was conducted to examine group differences in neurocognitive performance between male and female athletes with and without a history of concussion.

Results

Soccer players with a history of at least 1 previous concussion performed significantly worse on ImPACT than those who had not sustained a prior concussion (F = 2.92, P =.03). In addition, female soccer players performed worse on neurocognitive testing (F = 2.72, P =.05) and also reported more symptoms (F = 20.1, P =.00001) than male soccer players. There was no significant difference in body mass index between male and female players (F =.04, P =.85).

Conclusion

A history of concussion and gender may account for significant differences in postconcussive neurocognitive test scores in soccer players and may play a role in determining recovery. These differences do not appear to reflect differences in mass between genders and may be related to other gender-specific factors that deserve further study.

  S. J Hollis , M. R Stevenson , A. S McIntosh , E. A Shores , M. W Collins and C. B. Taylor
  Background

Mild traumatic brain injury (mTBI) is an emerging public health issue in high-contact sports. Understanding the incidence along with the risk and protective factors of mTBI in high-contact sports such as rugby is paramount if appropriate preventive strategies are to be developed.

Purpose

To estimate the incidence and identify the risk and protective factors of mTBI in Australian nonprofessional rugby players.

Study Design

Cohort study; Level of evidence, 2.

Methods

A cohort of 3207 male nonprofessional rugby players from Sydney, Australia, was recruited and followed over 1 or more playing seasons. Demographic information, history of recent concussion, and information on risk and protective factors were collected. The incidence of mTBI was estimated and the putative risk and protective factors were modeled in relation to mTBI.

Results

The incidence of mTBI was 7.97 per 1000 player game hours, with 313 players (9.8%) sustaining 1 or more mTBIs during the study. Players who reported always wearing protective headgear during games were at a reduced risk (incident rate ratio [IRR], 0.57; 95% confidence interval [CI], 0.40–0.82) of sustaining an mTBI. In contrast, the likelihood of mTBI was almost 2 times higher among players who reported having sustained either 1 (IRR, 1.75; 95% CI, 1.11–2.76) or more mTBIs (IRR, 1.65; 95% CI, 1.11–2.45) within the 12 months before recruitment.

Conclusion

Nonprofessional rugby has a high incidence of mTBI, with the absence of headgear and a recent history of mTBI associated with an increased risk of subsequent mTBI. These findings highlight that both use of headgear and the management of prior concussion would likely be beneficial in reducing the likelihood of mTBI among nonprofessional rugby players, who compose more than 99% of rugby union players in Australia.

 
 
 
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