Mortality in Middle-aged Adults

Steps per Day and All-Cause Mortality in Middle-aged Adults in the Coronary Artery Risk Development in Young Adults Study

CPD Hours: 1
Current as at 13 June 2022
Steps per day is a meaningful metric for physical activity promotion in clinical and population settings. To guide promotion strategies of step goals, it is important to understand the association of steps with clinical end points, including mortality. This study explores if regular physical activity is one of the most important behaviours people can do to improve or maintain good health.

Tags:

Investigate the number of steps required to enhance health

Course Content

Normal ageing leads to endothelial dysfunction and arterial stiffening implicated in cognitive decline. Cerebral blood flow also declines with aging. Inactivity is one of the biggest problems among the older adult population and increases the risk of sarcopenia and chronic diseases. Elevated blood flow during exercise produces laminar shear stress which is known to enhance endothelial function and to be slowing age-related arterial stiffness. Participation in regular physical activity, for example, is considered a core element for glycaemic control and diabetes management.

Epidemiological evidence demonstrates that replacing periods of sitting, particularly prolonged sitting time, with stepping is associated with improved glucose and insulin metabolism. Recent experimental studies in adults with T2D have also shown that interrupting prolonged sitting with frequent short bouts of light-intensity physical activity such as stepping, can lead to a substantial reduction in acute post-meal glycaemic responses. In the free-living setting, interrupting sitting time with regular standing, for example, has resulted in improved 24-hour glucose levels compared to engaging in structured exercise alone.

Wearable activity trackers are electronic devices that facilitate self-monitoring of information related to health. Consumer wearables and smartphone devices commonly offer an estimate of energy expenditure to assist in the objective monitoring of physical activity to the general population. And, since self-management of chronic diseases requires treatment or behavioural modification, support tools are needed to maintain a practice in daily life. Interventions through wearables and/or smartphone apps are effective in promoting physical activity in the middle-aged population. Daily step counts are an easily interpretable, trackable, and simple measure of physical activity volume and have become more familiar and accessible to the public with an increase in wearable devices.

Steps per day is a meaningful metric for physical activity promotion in clinical and population settings. To guide promotion strategies of step goals, it is important to understand the association of steps with clinical endpoints, including mortality.

This study explores if regular physical activity is one of the most important behaviours people can do to improve or maintain good health. The purpose of this study was to examine the use of tracker devices to record daily activities and their association with mortality.

Learning Outcomes

In this session, you will:

  • Investigate the number of steps required to enhance health
  • Explore the national guidelines for physical activity
  • Review if there was any difference in results between men or women
  • Understand if step monitoring devices impact compliance

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