(iii) Extended physical examination and measures obtained in sub-study Additional measures obtained from a subset of participants included a sixty-minute physical examination (anthropometric measures, lung function, aortic blood pressure, pulse wave [augmentation] index, pulse wave velocity and ankle brachial index), 31-hour ambulatory ECG, tri-axial accelerometry and sleep measures. Sub-study participants also completed an extended health questionnaire which included questions on diet and sleep.