Abstract
BACKGROUND: Currently, the evidence for exercise in maintaining health, well-being, and physical functioning is overwhelming. Despite these benefits, more than 50% of the population fails to meet the recommended exercise requirements for age and health status. In our study, we sought to provide a method to increase exercise adherence that was both effective and time-efficient for physicians and their patients. METHODS: The primary objective of this research study was to evaluate the effectiveness of a graded exercise protocol and biweekly monitoring on increasing the duration of aerobic exercise to 150 min per week in a population of elderly individuals with chronic disease. Secondarily, we evaluated for improvement in resting heart rate, blood pressure, body mass index (BMI), and cardiorespiratory fitness. The overall study design was a randomized, prospective cohort study with assessor blinding. Forty-five patients aged ≥60 years with multiple comorbidities were recruited from the Internal Medicine Clinic at Wright-Patterson AFB. Participants were randomized into a treatment or control arm and observed over a period of 34 weeks. Those in the treatment arm were given a graded walking protocol and received biweekly phone calls to evaluate compliance. Those in the control arm did not receive an intervention or biweekly monitoring. Measurements of heart rate, blood pressure, and BMI were taken quarterly in both groups. At the beginning and conclusion of the study, each participant completed a modified Balke treadmill test and Physical Activity Scale for the Elderly (PASE). Continuous variables were evaluated with the independent samples t-test, whereas categorical variables were evaluated with the chi-squared test. RESULTS: A greater percentage of the treatment group achieved the primary outcome (41.6% vs. 0%; p = 0.003). Those in the treatment group also had favorable improvements in heart rate response (- 2.4 beats/min vs. + 5.3 beats/min; p = 0.038) and PASE (+ 66 vs.-20; p < 0.001). No significant differences were observed between groups for mean change in heart rate, blood pressure, or BMI. CONCLUSION: Guided, independent exercise and surveillance can be an effective tool in primary care practice to help patients reach the recommended levels of exercise for both age and health status.