較高海拔並不能減少腦震盪風險


  【24drs.com】一篇新的統合分析結果認為,較高海拔處與在海平面高度處相比,與接觸性運動相關的腦震盪發生率之間並無關聯。研究者表示,這些研究結果應可平息「在高海拔地區較少運動相關之腦震盪」的想法。
  
  北卡羅來納海波特大學物理治療系James M. Smoliga博士、亞特蘭大喬治亞州立大學呼吸治療系Gerald S. Zavorsky博士等作者們結論指出,有關此議題的進一步研究,將會使資源從更有臨床效果的研究偏離,研究目標應是確認可修改的腦震盪風險因素、發展可改善運動員安全的完善科學技術、改善運動相關腦部傷害的急性與長期處置。
  
  這些研究結果線上發表於9月6日JAMA神經學期刊中的研究信函。
  
  系統性回顧美國國家醫學圖書館中的已發表文獻之後,作者們選了三篇研究進行統合分析:
  * Lynall等人。本研究使用2009-2014年全國大學生田徑協會傷害監測計劃之資料,探討甲組足球選手的腦震盪傷害;
  * Myer 等人。研究者探討了2012-2013年間國家美式足球聯盟選手的腦震盪發生率,資料來自各球隊的官方網站以及PBS Frontline Concussion Watch網站資源;
  * Smith等人。分析了在2005-2015年間9所高中參與運動之青少年的腦震盪發生率,資料來自全國高中體育相關傷害監測系統。
  
  這篇納入近500萬筆資料的統合分析發現,每個運動員(每次比賽)曝露的不良事件次數,在海平面高度處的範圍是大約介於 0.07% -0.45%,在高海拔處的比率相當,範圍介於0.06%- 0.50%。
  
  相較於較高海拔處,海平面高度處的腦震盪相對風險並無差異,作者們發現,沒有證據發表偏見。
  
  作者們寫道,結果顯示海拔與腦震盪風險之間沒有臨床關聯;從公衛角度來看,即便海拔可以保護運動員免於腦震盪,海拔並非可輕易改變的因素,其價值有限。
  
  作者們強調,宣稱可複製海拔影響的運動防護設備都沒有科學依據,因此,我們堅信,流行病學數據已經足以表明,此議題無需進一步研究。
  
  資料來源:http://www.24drs.com/
  
  Native link:Higher Altitude Doesn't Reduce Concussion Risk

Higher Altitude Doesn't Reduce Concussion Risk

By Pauline Anderson
Medscape Medical News

There is no association between the incidence of contact sports–related concussion at higher attitudes and that seen at sea level, results of a new meta-analysis suggest.

The findings should put to rest the idea that there are fewer sports-related concussions at higher altitudes, the researchers say.

"Further research on this issue will simply divert resources from more clinically effective research aimed at identifying modifiable risk factors for concussion, developing scientifically sound technologies that improve athlete safety, and improving acute and long-term management of sports-related head injuries," the authors, Gerald S. Zavorsky, PhD, Department of Respiratory Therapy, Georgia State University, Atlanta, and James M. Smoliga, PhD, Department of Physical Therapy, High Point University, North Carolina, conclude.

The results were published online September 6 as a research letter in JAMA Neurology.

After a systematic review of the published literature using the US National Library of Medicine database, the authors selected three studies for the meta-analysis:

  • Lynall et al. This study looked at Division 1 football concussion injuries using data from the National Collegiate Athletics Association Injury Surveillance Program from 2009 to 2014;

  • Myer et al. Researchers looked at concussion rates among National Football League players in 2012 and 2013, with data from each team's official website and from the PBS Frontline Concussion Watch web-based resource; and

  • Smith et al. This analysis of concussion rates in adolescents participating in nine high school sports between 2005 and 2012 used data from the National High School Sports Related Injury Surveillance System.

The meta-analysis, which included nearly 5 million data points, showed that the number of adverse events per athlete exposure (one game) at sea level ranged from about 0.07% to 0.45%, which was similar to the rate at higher altitudes, where they ranged from 0.06% to 0.50%.

There was no difference in the relative risk for concussion at sea level compared with at higher altitude. The authors found no evident publication bias.

The results demonstrate "that there is no clinically relevant association between altitude and concussion risk," the authors write. "Even if altitude protected athletes from concussion, altitude is not a factor that can be readily altered and is of little value from a public health standpoint."

Sports protective equipment meant to replicate the effects of altitude are not scientifically justified, the authors stressed. "As such, we firmly believe epidemiologic data are already sufficient to indicate that this is an issue that should not be examined further."

The authors have disclosed no relevant financial relationships.

JAMA Neurol. Published online September 6, 2016.

    
相關報導
男、女性的腦震盪恢復情形有差異
2008/7/22 上午 11:09:00
輕微腦損傷不是造成士兵創傷後壓力異常的主因
2008/2/5 上午 10:38:00
意識喪失不能預測腦震盪嚴重程度
2003/8/1 下午 03:48:00

上一頁
   1  
下一頁




回上一頁