Physical Activity : Absolute Intensity vs. Relative-to-Fitness-Level Volumes
Kujala, U., Pietilä, J., Myllymäki, T., Mutikainen, S., Föhr, T., Korhonen, I., & Helander, E. (2017). Physical Activity : Absolute Intensity vs. Relative-to-Fitness-Level Volumes. Medicine and Science in Sports and Exercise, 49(3), 474-481. https://doi.org/10.1249/MSS.0000000000001134
Published inMedicine and Science in Sports and Exercise
© 2016 the American College of Sports Medicine. This is a final draft version of an article whose final and definitive form has been published by Lippincott Williams & Wilkins. Published in this repository with the kind permission of the publisher.
Purpose: This study aimed to investigate in a real-life setting how moderate- and vigorous-intensity physical activity (PA) volumes differ according to absolute intensity recommendation and relative to individual fitness level by sex, age, and body mass index. Methods: A total of 23,224 Finnish employees (10,201 men and 13,023 women; ages 18–65 yr; body mass index = 18.5–40.0 kg·m−2) participated in heart rate recording for 2+ d. We used heart rate and its variability, respiration rate, and on/off response information from R-R interval data calibrated by participant characteristics to objectively determine daily PA volume, as follows: daily minutes of absolute moderate (3–<6 METs) and vigorous (≥6 METs) PA and minutes relative to individual aerobic fitness for moderate (40%–<60% of oxygen uptake reserve) and vigorous (≥60%) PA. Results: According to absolute intensity categorization, the volume of both moderate- and vigorous-intensity PA was higher in men compared with women (P < 0.001), in younger compared with older participants (P < 0.001), and in normal weight compared with overweight or obese participants (P < 0.001). When the volume of PA intensity was estimated relative to individual fitness level, the differences were much smaller. Mean daily minutes of absolute vigorous-intensity PA were higher than those of relative intensity minutes in normal weight men ages 18–40 yr (17.7, 95% confidence interval [CI] = 16.9–18.6, vs 8.6, 95% CI = 8.0–9.1; P < 0.001), but the reverse was the case for obese women ages 41–65 yr (0.3, 95% CI = 0.2–0.4, vs 7.8, 95% CI = 7.2–8.4; P < 0.001). Conclusion: Compared with low-fit persons, high-fit persons more frequently reach an absolute target PA intensity, but reaching the target is more similar for relative intensity. ...
PublisherLippincott Williams & Wilkins; American College of Sports Medicine
ISSN Search the Publication Forum0195-9131
Publication in research information system
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