Medicine and Health Sciences Commons^™

Clinical Perspectives On Incorporating Cardiorespiratory Fitness In Clinical Practice, Mary T. Imboden, Lynn A. Witty, Mitchell H. Whaley, Matthew P. Harber, Bradley S. Fleenor, Leonard A. Kaminsky

Faculty Publications - Department of Kinesiology

Cardiorespiratory fitness (CRF) has been documented as a strong, independent predictor of non-communicable disease and mortality in both clinical and apparently healthy populations. This well-established relationship has impelled organizations, including the American Heart Association, to release scientific statements highlighting the importance of accurate quantification of CRF. Current knowledge of the relationship between CRF and mortality is predominantly based on estimated CRF obtained from varying indirect methods. Cardiopulmonary exercise testing (CPX), the gold standard method of CRF measurement, provides a more accurate and reliable quantification of CRF compared to estimated methods. This review provides support for the diagnostic and prognostic use …

Comparison Of Four Fitbit And Jawbone Activity Monitors With A Research-Grade Actigraph Accelerometer For Estimating Physical Activity And Energy Expenditure, Mary T. Imboden, Michael B. Nelson, Leonard A. Kaminsky, Alexander Hk Montoye

Faculty Publications - Department of Kinesiology

Background/aim Consumer-based physical activity (PA) monitors have become popular tools to track PA behaviours. Currently, little is known about the validity of the measurements provided by consumer monitors. We aimed to compare measures of steps, energy expenditure (EE) and active minutes of four consumer monitors with one research-grade accelerometer within a semistructured protocol.

Methods Thirty men and women (18–80 years old) wore Fitbit One (worn at the waist), Fitbit Zip (waist), Fitbit Flex (wrist), Jawbone UP24 (wrist) and one waist-worn research-grade accelerometer (ActiGraph) while participating in an 80 min protocol. A validated EE prediction equation and active minute cut-points were …

Peak Ventilation Reference Standards From Exercise Testing: From The Friend Registry, Leonard A. Kaminsky, Matthew P. Harber, Mary T. Imboden, Ross Arena, Jonathan Myers

Faculty Publications - Department of Kinesiology

Peak Ventilation Reference Standards from Exercise Testing: From the FRIEND Registry. Med. Sci. Sports Exerc., Vol. 50, No. 12, pp. 2603–2608, 2018. Purpose: Cardiopulmonary exercise testing (CPX) provides valuable clinical information, including peak ventilation (V˙ Epeak), which has been shown to have diagnostic and prognostic value in the assessment of patients with underlying pulmonary disease. This report provides reference standards for V˙ Epeak derived from CPX on treadmills in apparently healthy individuals. Methods: Nine laboratories in the United States experienced in CPX administration with established quality control procedures contributed to the Fitness Registry and the Importance of Exercise National Database …

Cardiorespiratory Fitness And Mortality In Healthy Men And Women, Mary T. Imboden, Matthew P. Harber, Mitchell H. Whaley, W. Holmes Finch, Derron L. Bishop, Leonard A. Kaminsky

Faculty Publications - Department of Kinesiology

Background

There is a well-established inverse relationship between cardiorespiratory fitness (CRF) and mortality. However, this relationship has almost exclusively been studied using estimated CRF.

Objectives

This study aimed to assess the association of directly measured CRF, obtained using cardiopulmonary exercise (CPX) testing with all-cause, cardiovascular disease (CVD), and cancer mortality in apparently healthy men and women.

Methods

Participants included 4,137 self-referred apparently healthy adults (2,326 men, 1,811 women; mean age: 42.8 ± 12.2 years) who underwent CPX testing to determine baseline CRF. Participants were followed for 24.2 ± 11.7 years (1.1 to 49.3 years) for mortality. Cox-proportional hazard models were …

Peak Ventilation Reference Standards From Exercise Testing: From The Friend Registry, Leonard A. Kaminsky, Matthew P. Harber, Mary T. Imboden, Ross Arena, Jonathan Myers

Faculty Publications - Department of Kinesiology

Purpose: Cardiopulmonary exercise testing (CPX) provides valuable clinical information, including peak ventilation (V˙Epeak), which has been shown to have diagnostic and prognostic value in the assessment of patients with underlying pulmonary disease. This report provides reference standards for V˙Epeak derived from CPX on treadmills in apparently healthy individuals.

Methods: Nine laboratories in the United States experienced in CPX administration with established quality control procedures contributed to the Fitness Registry and the Importance of Exercise National Database from 2014 to 2017. Data from 5232 maximal exercise tests from men and women without cardiovascular or pulmonary disease were used to create percentiles …

Cardiorespiratory Fitness Measured From Cardiopulmonary Exercise Testing For Mortality Risk Prediction In Apparently Healthy Men And Women, Mary T. Imboden, Matthew P. Harber, W H. Finch, Derron L. Bishop, Mitchell H. Whaley, Leonard A. Kaminsky

Faculty Publications - Department of Kinesiology

Over the past three decades numerous studies have illustrated the inverse relationship between cardiorespiratory fitness (CRF) and mortality. However, this relationship has almost exclusively been studied using estimated CRF (CRFe), with known error of ± 3 to 7 ml/kg/min, with no studies assessing this association using directly measured CRF in both men and women that were apparently healthy at baseline testing.