Analysis of information sources in references of the Wikipedia article "Hand truck" in English language version.
A complete or fully assembled hand truck is a hand-propelled barrow consisting of a vertically disposed frame having a handle or more than one handle at or near the upper section of the vertical frame; at least two wheels at or near the lower section of the vertical frame; and a horizontal projecting edge or edges, or toe plate, perpendicular ...
When cornering a hand truck, however, the force is applied at an oblique angle to the handle and truck, and there is less muscle capacity available for the task. Much of the work is done by the small shoulder and forearm muscles, so the perceived effort is higher than when the biceps, triceps, larger shoulder muscles, and upper trunk muscles are involved. The preferred handle height for straight horizontal pushing is at about eIbow height, or about 91 cm (35 inches) above the floor ...
