Typically, a user can push a manual wheelchair at a speed of 1 to 2 miles per hour.
This speed range is widely regarded as the common operating speed for a manual wheelchair under normal, safe, and sustainable conditions.
Yes, manual wheelchairs do require considerable physical exertion.
One of the core challenges of manual wheelchairs is that:
Users must be prepared to push the wheelchair themselves.
From a physical exertion perspective, a manual wheelchair cannot truly be considered a "labor-saving" device.