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Exercise Bike Versus Treadmill

author image Amanda Willis, DPT, PT
Amanda Willis is a practicing physical therapist in Little Rock, Ark., who specializes in adult orthopedic conditions. She received a Bachelor of Science in health science and her doctoral degree in physical therapy at the University of Central Arkansas. She currently practices at the University of Arkansas for Medical Sciences.
Exercise Bike Versus Treadmill
woman jogging on treadmill Photo Credit Estudi M6/iStock/Getty Images

Bikes and treadmills are both effective forms of cardiovascular exercise. Both come in a variety of sizes, brands and models, and both can come with adjustable settings for resistance, programs and times. Many models include pulse rate indicators on the handles. But when it comes to choosing which machine is best for you, it's important to know about the major differences that will affect you.

Machine Parts

Exercise Bike Versus Treadmill
man on exercise bike Photo Credit Wavebreakmedia Ltd/Wavebreak Media/Getty Images

A treadmill can accommodate the size of most people, while a bike has more stringent size requirements. While both machines have weight limits, a bike -- especially recumbent versions -- may not always accommodate larger persons. The space between the seat and the main control panel may not be wide enough for a larger person, and the seat may also not provide enough support for a larger person to sit comfortably. In addition, most bikes require the knee to bend close to 90 degrees, so people with special knee conditions that limit bending may not be able to make a full revolution.

Body Parts

Exercise Bike Versus Treadmill
woman walking on treadmill Photo Credit Antonio_Diaz/iStock/Getty Images

Treadmills simulate walking on flat or inclined surfaces, which will cause some force to be exerted through the legs and into the spine. People who do not have issues with walking will generally do fine when using a treadmill. People with special spine or lower extremity conditions may prefer a bike over a treadmill, because a bike reduces stress and impact on the ankles, knees, hips and spine. Because you are in a seated position, the bike is a relatively nonimpact exercise machine, ideal for someone with severe arthritis or back problems. In addition, a bike would be ideal for someone with upper extremity conditions, since that part of the body is relatively inactive on a bike.

Staying On

Exercise Bike Versus Treadmill
woman on exercise bicycle Photo Credit Jupiterimages/Stockbyte/Getty Images

A fall from a treadmill is one of the most common injuries that can occur with exercise equipment. Even when holding onto the rails of a treadmill, people often get distracted. Even people without balance issues can sometimes lose their footing once in a while, and this only needs to happen once for a fall to occur. There is a safety clip that will shut the machine off if you get too far away from the front -- on most machines -- but don't count on this to stop before a fall has started. In addition, walking on a treadmill puts a significant amount of weight through the spine and joints of the leg, so people with issues relating to the spine and lower extremities may find a bike to be a better fit.

Burning Off

Exercise Bike Versus Treadmill
woman walking on treadmill Photo Credit kzenon/iStock/Getty Images

In general, people tend to burn more calories on a treadmill than a bike. This is because on a treadmill you are weight-bearing and you are more likely to move your arms and torso. This in turn means more muscle activation and more calories burned. On recumbent bikes, the upper body is usually inactive. Bikes that are upright with moving arm handles do get the arms and torso moving, but they still don't offer the benefits of full weight-bearing as provided by the treadmill. This is not to say that you couldn't burn as many calories on a bike; you will just have to work a little harder by turning up the intensity level on the bike.


Exercise Bike Versus Treadmill
woman using an exercise bicycle at home Photo Credit Mark Bowden/iStock/Getty Images

Financial considerations are major factors when choosing between a bike and a treadmill. Although both can be found at reasonable prices, treadmills tend to be a bit more expensive. If purchasing a piece of equipment for your home, space can be an issue. A treadmill will take up more space than an exercise bike and will be much heavier and more difficult to move, which is another convenience factor to consider.

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