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Measuring physical fitness in Persons with Severe/Profound ...

Measuring physical fitness in Persons with Severe/Profound ...

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Table 4. Variability of heart rate and l<strong>in</strong>ear mixed models.FixedModel(person level) B-value SEIntercept 4.217 0.655Time of day -0.007 0.001ActivityTargeted activity vs no targeted (ref)0.021 0.021Age -0.023 0.012GenderMale vs female (ref)Orthopaedic defectsNo orth defects vs orth defects (ref)SpasticityBilateral vs unilateral parese (ref)Visual impair<strong>Severe</strong> partially vs partially impaired vision (ref)-0.041 0.409-0.257 0.5770.499 0.8670.185 0.39Auditive impairment<strong>Severe</strong> hear<strong>in</strong>g loss vs slight hear<strong>in</strong>g loss vs normal hear<strong>in</strong>g-0.606-0.7350.5930.462RandomParticipant 0.911Days 0.161Time of day 0.429Total var 1.5012Loglikelihood 10302B-value, the regression-coefficient; SE, standard error; vs, versus; ref, reference value.With the variable age, time of the day and the observations measured at six different days,we found a four class solution that gives a clear cl<strong>in</strong>ical <strong>in</strong>terpretation [36, 37]. The four classclasses were: high heart rate zone (class 1), middle stable heart rate zone (class 2), low heart ratezone (class 3) and variation <strong>in</strong> the middle heart rate zone (class 4).130 | Chapter 8

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