Title | An Objective Method to Accurately Measure Cardiorespiratory Fitness in Older Adults Who Cannot Satisfy Widely Used Oxygen Consumption Criteria. |
Publication Type | Journal Article |
Year of Publication | 2018 |
Authors | Dougherty, RJ, Lindheimer, JB, Stegner, AJ, Van Riper, S, Okonkwo, OC, Cook, DB |
Journal | J Alzheimers Dis |
Volume | 61 |
Issue | 2 |
Pagination | 601-611 |
Date Published | 2018 |
ISSN | 1875-8908 |
Keywords | Aged, Cardiorespiratory Fitness, Exercise Test, Female, Humans, Male, Middle Aged, Oxygen Consumption, Reproducibility of Results, Wisconsin |
Abstract | Cardiorespiratory fitness (CRF) is routinely investigated in older adults; however, the most appropriate CRF measure to use for this population has received inadequate attention. This study aimed to 1) evaluate the reliability and validity of the oxygen uptake efficiency slope (OUES) as a sub-maximal measurement of CRF; 2) examine demographic, risk-factor, and exercise testing differences in older adults who satisfied standardized criteria for a peak oxygen consumption (V̇O2peak) test compared to those who did not; and 3) determine the difference between directly measured V̇O2peak values and OUES-predicted V̇O2peak values. One hundred ten enrollees from the Wisconsin Registry for Alzheimer's Prevention participated in this study. Participants performed a graded maximal exercise test and wore an accelerometer for 7 days. For each participant, the OUES was calculated at 75%, 90%, and 100% of exercise duration. V̇O2peak was recorded at peak effort, and one week of physical activity behavior was measured. OUES values calculated at separate relative exercise durations displayed excellent reliability (ICC = 0.995; p |
DOI | 10.3233/JAD-170576 |
Alternate Journal | J. Alzheimers Dis. |
PubMed ID | 29226867 |
PubMed Central ID | PMC5745283 |
Grant List | R01 AG027161 / AG / NIA NIH HHS / United States K23 AG045957 / AG / NIA NIH HHS / United States UL1 RR025011 / RR / NCRR NIH HHS / United States R01 AG021155 / AG / NIA NIH HHS / United States R21 AG051858 / AG / NIA NIH HHS / United States UL1 TR002373 / TR / NCATS NIH HHS / United States P50 AG033514 / AG / NIA NIH HHS / United States |