Another group kept paper diaries. A third group kept no log.
The study found that families in the text messaging group had a decline in TV and computer time.
The study is in the Journal of Nutrition Education and Behavior.
Text messages used to encourage kids to diet, exercise
Every day for eight weeks, the families of 18 children between 5 and 13 were sent text messages asking how much time the child had spent exercising that day, how much time was spent in front of a TV or computer, and whether the child had any sugary drinks that day.
