A treadmill is a device generally for walking or running or climbing while staying in the same place. Treadmills were introduced before the development of powered machines, to harness the power of animals or humans to do work, often a type of mill that was operated by a person or animal treading steps of a treadwheel to grind grain. In later times, treadmills were used as punishment devices for people sentenced to hard labour in prisons. The terms treadmill and treadwheel were used interchangeably for the power and punishment mechanisms. More recently, treadmills are not used to harness power, but as exercise machines for running or walking in one place. Rather than the user powering the mill, the machine provides a moving platform with a wide conveyor belt driven by an electric motor or a flywheel. The belt moves to the rear, requiring the user to walk or run at a speed matching that of the belt. The rate at which the belt moves is the rate of walking or running. Thus, the speed of running may be controlled and measured. The more expensive, heavy-duty versions are motor-driven (usually by an electric motor). The simpler, lighter, and less expensive versions passively resist the motion, moving only when walkers push the belt with their feet. The latter are known as manual treadmills. According to Sports & Fitness Industry Association, treadmills continue to be the largest selling exercise equipment category by a large margin. As a result, the treadmill industry counts with hundreds of manufacturers throughout the World.

Textauszug zu Treadmill aus Wikipedia (Lizenz)

Treadclimber / Treppenlaufband
Treadclimber / Treppenlaufband

Das Bild „Treadclimber / Treppenlaufband“ von Marco Verch kann unter Creative Commons Lizenz genutzt werden. Es ist auf Flickr in voller Auflösung verfügbar.

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Aufgenommen am 10.04.2016 mit der Kamera NIKON D90 und diesen Einstellungen: f8.0 - 1/15 - 17.0 mm (25 mm) - ISO3200

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