| http://www.w3.org/ns/prov#value | - Subjects were excluded if they had any acute medical conditions, resting heart rate <50 or >110 beats/min, seated systolic blood pressure >200 mm Hg or seated diastolic blood pressure >110 mm Hg, resting pulse oximetry <90%, severe aortic stenosis, recent or active angina, recent myocardial infarction or revascularization (within 3 months), need for an ambulatory aid such as a wheelchair, crutches
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