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gbj_tester
M_V
I’ve just done 3 weeks of it morning and night and I’m pretty evenly spread between 550 and 650. Maybe slightly more of the results being 600+.
I think I’d agree about technique, as I’d not feel like my breathing was any different from one day to the next but have a difference of 100 in my test results.
I just had a Spirograph test done at the hospital and the guy that administered that said I was at about 78-80% of lung capacity (I presume for my age, weight and height as he took these) which about correlated to the norms chart for the peak flow meter which says I should be doing about 670.