Physical Activity, Cardiorespiratory Fitness, and Population-Attributable Risk

2021 ◽  
Vol 96 (2) ◽  
pp. 342-349
Author(s):  
Jonathan Myers ◽  
Baruch Vainshelboim ◽  
Shirit Kamil-Rosenberg ◽  
Khin Chan ◽  
Peter Kokkinos
2020 ◽  
Vol 9 (1) ◽  
pp. 29-39
Author(s):  
Gregory W. Heath ◽  
Nicholas Boer

ABSTRACT An understanding of epidemiologic methods is important for the clinical exercise physiologist to assess the complex relationships between physical activity and health and disease. It is essential to the practice of preventive and rehabilitative care to understand the web of causation and complex interactions among agent (exercise), host (individual), and environment (affects transmission of agent source to host) in relationship to disease/injury and clinical outcomes. Application of the epidemiologic measures of disease/injury occurrence, variations in occurrence, and statistical measures of attributable risk and population attributable risk contribute to the clinician's skill level in assessing potential cause-effect relationships reported in the literature about exercise medicine, physical activity, and public health. By becoming familiar with the study methods used in epidemiology, the clinical exercise physiologist will be better positioned to assess criteria for a cause-effect relationship as well as to critically evaluate the assessment efforts used across a variety of study designs and applications of epidemiology in clinical research and practice.


Diabetes ◽  
2020 ◽  
Vol 69 (Supplement 1) ◽  
pp. 170-OR
Author(s):  
JINGYI QIAN ◽  
MICHAEL P. WALKUP ◽  
SHYH-HUEI CHEN ◽  
PETER H. BRUBAKER ◽  
DALE BOND ◽  
...  

Author(s):  
Tom Martinsson Ngouali ◽  
Mats Börjesson ◽  
Åsa Cider ◽  
Stefan Lundqvist

Swedish physical activity on prescription (PAP) is an evidence-based method to promote physical activity. However, few studies have investigated the effect of Swedish PAP on physical fitness, in which better cardiorespiratory fitness is associated with lower risks of all-cause mortality and diagnose-specific mortality. Direct measures of cardiorespiratory fitness, usually expressed as maximal oxygen uptake, are difficult to obtain. Hence, exercise capacity can be assessed from a submaximal cycle ergometer test, taking the linear relationship between heart rate, work rate, and oxygen uptake into account. The aim of this study was to evaluate exercise capacity in the long term, following PAP treatment with enhanced physiotherapist support in a nonresponding patient cohort. In total, 98 patients (48 women) with insufficient physical activity levels, with at least one component of the metabolic syndrome and nonresponding to a previous six-month PAP treatment, were randomized to PAP treatment with enhanced support from a physiotherapist and additional exercise capacity tests during a two-year period. A significant increase in exercise capacity was observed for the whole cohort at two-year follow-up (7.6 W, p ≤ 0.001), with a medium effect size (r = 0.34). Females (7.3 W, p = 0.025), males (8.0 W, p = 0.018) and patients ≥58 years old (7.7 W, p = 0.002) improved significantly, whereas a nonsignificant increase was observed for patients <58 years old (7.6 W, p = 0.085). Patients with insufficient physical activity levels who did not respond to a previous six-month PAP treatment can improve their exercise capacity following PAP treatment with enhanced support from a physiotherapist during a two-year period. Future studies should include larger cohorts with a control group to ensure valid estimations of exercise capacity and PAP.


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