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Dr Larry Creswell

Dr. Larry Creswell on athletes and heart health.
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What is Your Blood Telling You?

July 23, 2010 By Larry Creswell, MD 14 Comments

 
In my column this month at Endurance Corner, I write about laboratory (blood) tests that may be useful for athletes. I’m frequently asked which tests are useful and also how to interpret the results of the various tests. I provide some recommendations about how to work with your physician to decide when laboratory testing may be useful for you….in your particular circumstance.
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Comments

  1. 魏江伶魏江伶 says

    July 25, 2010 at 8:56 am

    凡事三思而行,跑得太快是會滑倒的。.......................................................

    Reply
  2. DaniloM_W志竹olff0615 says

    July 28, 2010 at 5:44 am

    Unable to give you a heart. so have a reply to push up your post.
    ............................................................

    Reply
  3. 家唐銘 says

    July 31, 2010 at 7:54 am

    永遠支持你呀!!!謝謝格主.................................................................

    Reply
  4. 文王廷 says

    August 3, 2010 at 10:07 am

    做好事,不需要給人知道,雖然只是一件微不足道的事,但我相信,這會帶給我快樂。..................................................

    Reply
  5. 恩宛玲如 says

    August 6, 2010 at 6:39 am

    缺少智慧,就是缺少一切..................................................

    Reply
  6. 邱思吳佳順翰 says

    August 9, 2010 at 2:29 am

    所有的資產,在不被諒解時,都成了負債.................................................................

    Reply
  7. 誠陳侑 says

    August 11, 2010 at 9:42 am

    你的分享很不錯.. 謝謝 ..................................................

    Reply
  8. 陳倩江陳倩江陳倩江 says

    August 11, 2010 at 9:45 am

    希望能常常看到你的更新............................................................

    Reply
  9. 蔡曼鄭美玉屏 says

    August 13, 2010 at 10:24 pm

    與人相處不妨多用眼睛說話,多用嘴巴思考. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    Reply
  10. 江仁趙雲虹昆 says

    August 16, 2010 at 1:19 am

    及時行樂-快樂不需要理由............................................................

    Reply
  11. 翊翊翊翊張瑜翊翊翊 says

    August 18, 2010 at 4:35 am

    良好的開端,已是成功的一半。..................................................

    Reply
  12. 麗王王珠 says

    August 18, 2010 at 4:35 am

    不會從失敗中找尋教訓的人,成功之路是遙遠的。.................................................

    Reply
  13. ChuckD says

    September 5, 2010 at 4:11 am

    Hey Dr. Creswell,
    There’s a lot of spam in the comments here but I wanted to let you know there’s at least one reader who appreciates your efforts.
    Thanks from a long-retired competitive cyclist.

    C.

    PS, would love to hear about the effects of Metoprolol on vigorous exercise.

    Reply
  14. lcreswell says

    September 8, 2010 at 12:25 am

    ChuckD,

    Good to hear from you. And sorry about the spam! Glad that you found the blog….and glad to hear that you’re a (retired) cyclist.

    Metoprolol is one of the beta-blockers, a medication designed to slow the heart rate and lower the blood pressure.

    It’s not often a good choice for athletes because it:

    1) limits the heart rate, so it will limit your high-end activities and

    2) reduces the strength with which the heart contracts with each heartbeat. It will reduce the maximum blood flow that your heart can generate.

    Metoprolol or other beta-blockers may not have a noticeable effect if you only pursue low-intensity sporting activities such as golf, etc.

    Hope that helps.

    Larry

    Reply

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