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  1. #1
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    Cycling and Fittness question

    Hello,
    I'm not sure where a good spot to post this is, so if there is abetter place then "General" please move.

    Anyhow,
    This week, i've been pretty good so far at rideing 30 minutes every day. This carries me about 5 - 6 miles. I seem to be sleeping better at night. When I go to bed I seem to be falling asleep faster. I'm wakeing up less tired.

    So anyways,
    On to my question
    Today, just for curiousity, I wore a SPo2 moniter while I rode.
    The results were a little scary. It seems that when I'm rideing my O2 numbers are in the 80s. Arround 85 - 88% SPo2. Is this normal? My Heartrate stayed in the safe zone. About 150 tops. I'm 5'6" weight 166 lbs at aprox 35 years of age. Due to the hills, down and up and down and up and stopping for traffic ect, my heart rate was not constant. It would go up and down as I worked and coasted and stoped and waited for a few cars and then went again. At one point my o2 level went to 81%. For the most part it was arround 85 - 88% though.

    What are good bike rideing O2 levels? Are mine bad? I was not out of breath. I was breathing heavily and deeply, but nothing extreme for what I was doing. The hills seem less steep then a few months ago. When I get home I feel great! My legs are the good kind of sore! I do some pushups and stiups, and I go for a short walk to let my heartrate drop down.

    I woud appricate your feedback please,
    Thanks,
    -Jonathan

  2. #2
    Senior Member Looigi's Avatar
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    Assuming you're normal and healthy, the safe range for HR is anything other than zero.

    Something is wrong somewhere. Saturation should be >95%. That might decrease a few percent during exercise.

    Respiration rate and perceived need for air is driven by CO2 in the blood, not O2 saturation.

  3. #3
    Senior Member
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    Thanks that's what I was wondering.
    I wonder if my equipment was malfunctioning.
    I try it tomarow maybe on a diffrent finger.

  4. #4
    rebmeM roineS JanMM's Avatar
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    Are consumer-grade oximetry devices truly accurate for vigorous athletic activity, like cycling?
    RANS V3 (steel), RANS V-Rex, RANS Screamer

  5. #5
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    I think it may have been reading in error. Im sure if my O2 levels were really dropping I would have felt some symptoms of it. I remember trying to run at an elevation of 8000' (Obviously in the mountans) and I couldn't make it far before I was way winded. I'm sure that I was getting my CO2 out no problem, so there has to be more to the resperation rate then just a CO2 buildup.

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