I have a Page on the benefits of walking as well as numerous posts on various aspects of the subject. I have called it numerous times, “The Cinderella of the Exercise World” because it is so unappreciated. The following is from the Optimal Aging Portal of McMaster University.
Walking speed (gait speed) or mobility is necessary for most tasks that humans undertake. Slowing of walking speed is associated with aging in all persons. Walking speed has also been associated both with how long a person will live (survival) and with changes that occur when older persons are having difficulty or become unable to do tasks. In research studies walking ability has been assessed by tests where persons are either asked to walk at their usual speed (sometimes called self-selected walking speed) OR fast walking speed where a person is instructed to walk as fast as they can safely.
How fast do I need to walk to cross the road safely?
To undertake various activities within the community that involve walking, the average distances required to walk vary from 200-600 metres. The task that usually concerns older persons most in relation to walking speed is how quickly they need to walk in order to cross a road safely. The critical speed cited for this task is 1.14 meters/second and has been broken down in the following way:
- Crossing a 2 lane road (4 metres/lane) in 10 seconds (5 seconds per lane),
- And 3 seconds to get up and down off either curb (1.5 seconds per curb).
- The critical speed is 8 metres/7 seconds = 1.14meters/second.
The speed we are able to walk decreases as we age. There are several reports that indicate some normal ranges for older persons. For example, general walking speeds for community activities are 1.2-1.4 metres/sec until 80 years and 1.0-1.8 metres/second until 90 years and older.
Older persons who have a walking speed of less than 1 metre/second have reported ceasing involvement in any regular physical activity. Self-selected walking speed associated with frailty has been reported as less than 0.65 metres/second if you are short (i.e. = 159cm) and 0.75m/sec if you are taller (height >159cm).