Amjad M Ahmed1, Waqas T Qureshi2, Sherif Sakr3, Michael J Blaha4, Clinton A Brawner5, Jonathan K Ehrman4, Steven J Keteyian5, Mouaz H Al-Mallah1,5,6,7. 1. King Abdulaziz Cardiac Center, King Abdulaziz Medical City, Ministry of National Guard-Health Affairs, Riyadh, Saudi Arabia. 2. Department of Internal Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina. 3. Department of Public Health, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia. 4. Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, Maryland. 5. Heart and Vascular Institute, Henry Ford Hospital, Detroit, Michigan. 6. King Abdullah International Medical Research Center, Riyadh, Saudi Arabia. 7. Department of medicine, King Saud bin Abdulaziz for Health Sciences, Riyadh, Saudi Arabia.
Abstract
BACKGROUND: Exercise capacity is associated with survival in the general population. Whether this applies to patients with treated depression is not clear. HYPOTHESIS: High exercise capacity remains associated with lower risk of all-cause mortality (ACM) and nonfatal myocardial infraction (MI) among patients with treated depression. METHODS: We included 5128 patients on antidepressant medications who completed a clinically indicated exercise stress test between 1991 and 2009. Patients were followed for a median duration of 9.4 years for ACM and 4.5 years for MI. Exercise capacity was estimated in metabolic equivalents of tasks (METs). Cox proportional hazards regression models were used. RESULTS: Patients with treated depression who achieved ≥12 METs (vs those achieving <6 METs) were younger (age 46 ± 9 vs 61 ± 12 years), more often male (60% vs 23%), less often black (10% vs 27%), and less likely to be hypertensive (51% vs 86%), have DM (9% vs 38%), or be obese (11% vs 36%) or dyslipidemic (45% vs 54%). In the fully adjusted Cox proportional hazard regression model, exercise capacity was associated with a lower ACM (HR per 1-MET increase in exercise capacity: 0.82, 95% CI: 0.79-0.85, P < 0.001) and nonfatal MI (HR: 0.92, 95% CI: 0.87-0.97, P = 0.004). CONCLUSIONS: Exercise capacity had an inverse association with both ACM and nonfatal MI in patients with treated depression, independent of cardiovascular risk factors. These results highlight the potential impact of assessing exercise capacity to identify risk, as well as promoting an active lifestyle among treated depression patients.
BACKGROUND: Exercise capacity is associated with survival in the general population. Whether this applies to patients with treated depression is not clear. HYPOTHESIS: High exercise capacity remains associated with lower risk of all-cause mortality (ACM) and nonfatal myocardial infraction (MI) among patients with treated depression. METHODS: We included 5128 patients on antidepressant medications who completed a clinically indicated exercise stress test between 1991 and 2009. Patients were followed for a median duration of 9.4 years for ACM and 4.5 years for MI. Exercise capacity was estimated in metabolic equivalents of tasks (METs). Cox proportional hazards regression models were used. RESULTS:Patients with treated depression who achieved ≥12 METs (vs those achieving <6 METs) were younger (age 46 ± 9 vs 61 ± 12 years), more often male (60% vs 23%), less often black (10% vs 27%), and less likely to be hypertensive (51% vs 86%), have DM (9% vs 38%), or be obese (11% vs 36%) or dyslipidemic (45% vs 54%). In the fully adjusted Cox proportional hazard regression model, exercise capacity was associated with a lower ACM (HR per 1-MET increase in exercise capacity: 0.82, 95% CI: 0.79-0.85, P < 0.001) and nonfatal MI (HR: 0.92, 95% CI: 0.87-0.97, P = 0.004). CONCLUSIONS: Exercise capacity had an inverse association with both ACM and nonfatal MI in patients with treated depression, independent of cardiovascular risk factors. These results highlight the potential impact of assessing exercise capacity to identify risk, as well as promoting an active lifestyle among treated depressionpatients.
Keywords:
All-Cause Mortality; Depression and Antidepression Medications; Exercise Capacity; Nonfatal Myocardial Infarction; The Henry Ford Exercise Testing (FIT) Project
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