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Cash Helps People Make Healthy Lifestyle Changes

Study Shows That Cash Incentive Can Get People off the Couch
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WebMD Health News
Reviewed by Louise Chang, MD

May 29, 2012 -- Knowing you need to make healthy lifestyle changes like exercising more and eating less fat is, as most anyone knows, a lot different from actually doing it.

Now new research shows that cold, hard cash may help more people make -- and maintain -- such changes.

According to the study, adults were more likely to eat better and spend less time channel surfing on the couch when they kept a digital record of their diet and activity -- and received $175 for meeting their health goals during the three weeks of the study.

The findings appear in the Archives of Internal Medicine.

The new study included 204 adults aged 21 to 60. All ate a diet high in saturated fat and low in fruits and vegetables when the study began. They also got little exercise each day and had high amounts of inactive leisure time.

Participants were placed into four groups, asking them to:

  • Eat more fruits and vegetables and exercise more.
  • Decrease the amount of unhealthy fat in their diet and spend less time on the couch.
  • Eat less fat and exercise more.
  • Eat more fruit and vegetables and decrease couch time.

A Little Cash, a Lot of Changes

Study participants uploaded information on their progress into a hand-held device, which was then sent to a coach. Those who met their goals after three weeks got $175.

Once the three-week study was completed, participants then got $30 to $80 for sending data to their coach for five months. They were no longer asked to meet health and fitness goals, just to report on their daily activities and eating patterns.

Yet the changes stuck.

  • The servings of fruits and veggies increased from 1.2 per day on average when the study started to 5.5 at the end of three weeks. They leveled off to 2.9 at the five-month follow-up.
  • Time spent on the couch decreased from an average of 219.2 minutes per day before the study to 89.3 minutes at the end of three weeks and then to 125.7 at the end of the follow-up period.
  • The average number of calories from artery-clogging saturated fat fell from 12% of daily calories to 9.4% at the end of the three-week study, and rose slightly to 9.9 % at the five-month follow-up.
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