Despite the increasing variety of cardiovascular machines available, treadmills remain the most popular exercise machine as of 2010, according to national retailer Dick's Sporting Goods. As a result, fitness equipment manufacturers produce numerous treadmill models with different settings, programs, construction styles and materials. Among the factors you should consider when shopping for a treadmill are speed, incline, computer capabilities and warranty. One element that sometimes is overlooked is the weight restriction.
Considerations
Body weight alone isn't the only consideration -- you also should take into account the type and duration of exercise you'll be doing on the treadmill. For example, running can produce an impact that's much greater than your actual body weight, while walking doesn't produce as much impact. Likewise, if you're using the treadmill regularly to train for a marathon, you may want to choose one with a higher weight restriction, because it's likely to be more durable.
Features
Treadmill features that go into determining weight restrictions include deck size, deck materials, belt motor and incline motor. Durable deck materials measuring 1 inch thick will have a higher weight allowance than deck materials measuring 1/2 inch thick. Motors with 2.5 horsepower or more produce enough power to handle heavier weights. Treadmills with incline options require strong motors to push the deck up while you're exercising.
Identification
While equipment manufacturers will note the recommended weight restriction on the box and on treadmill, you should also review the materials and the overall construction. Look for treadmills with an aluminum frame construction instead of plastic or plywood. The aluminum increases the strength and durability of the treadmill without adding weight.
Effects
Choosing a treadmill that doesn't have a high enough weight restriction will not only decrease the treadmill's performance but could also put excessive pressure on the belt and motor that will ultimately reduce the lifespan of the treadmill. Using the treadmill without following the weight restriction could also void any manufacturer warranties for repair or replacement.
Recommendation
TreadmillReviews.net recommends choosing a treadmill with a weight restriction at least 50 to 75 lbs. heavier than your body weight. Treadmill weight restrictions generally range from about 250 to 400 lbs., with the most durable treadmills rated at 500 lbs.
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