Polzien Kristen M, Jakicic John M, Tate Deborah F, Otto Amy D
Physical Activity and Weight Management Research Center, University of Pittsburgh, Department of Health and Physical Activity, 140 Trees Hall, Pittsburgh, PA 15261, USA.
Obesity (Silver Spring). 2007 Apr;15(4):825-30. doi: 10.1038/oby.2007.584.
The objective was to examine the efficacy of adding a technology-based program to an in-person, behavioral weight loss intervention.
Fifty-seven subjects (BMI=33.1+/-2.8 kg/m2; age=41.3+/-8.7 years) participated in a 12-week intervention with random assignment to Standard In-Person Behavioral Weight Control Program (SBWP) or Intermittent or Continuous Technology-Based Program (INT-TECH, CON-TECH). SBWP subjects received seven individualized weight loss sessions encouraging dietary and exercise modifications. INT-TECH and CON-TECH subjects received all SBWP components; additionally, these groups used a SenseWear Pro Armband (BodyMedia, Inc.) to monitor energy expenditure and an Internet-based program to monitor eating behaviors. These features were used by INT-TECH subjects during weeks 1, 5, and 9 and CON-TECH subjects weekly throughout the intervention.
Intent-to-treat analysis revealed weight loss of 4.1+/-2.8 kg, 3.4+/-3.4 kg, and 6.2+/-4.0 kg, for SBWP, INT-TECH, and CON-TECH groups, respectively (CON-TECH>INT-TECH, p<or=0.05).
These results indicate that the technology-based program needs to be used continuously throughout the intervention period to significantly impact weight loss. Future studies should examine the long-term and independent effect of this technology on weight loss, and for whom this intervention format is most effective.
本研究旨在探讨在面对面行为减肥干预中加入基于技术的项目的效果。
57名受试者（BMI = 33.1±2.8kg/m²；年龄 = 41.3±8.7岁）参与了一项为期12周的干预，随机分配至标准面对面行为体重控制项目（SBWP）或间歇性或持续性基于技术的项目（INT-TECH，CON-TECH）。SBWP组的受试者接受了七次个性化减肥课程，鼓励他们改变饮食和运动习惯。INT-TECH组和CON-TECH组的受试者接受了SBWP的所有内容；此外，这些组使用SenseWear Pro臂带（BodyMedia公司）监测能量消耗，并使用基于互联网的程序监测饮食行为。INT-TECH组的受试者在第1、5和9周使用这些功能，CON-TECH组的受试者在整个干预过程中每周使用。
意向性分析显示，SBWP组、INT-TECH组和CON-TECH组的体重减轻分别为4.1±2.8kg、3.4±3.4kg和6.2±4.0kg（CON-TECH>INT-TECH，p≤0.05）。
这些结果表明，基于技术的项目需要在整个干预期内持续使用，才能对体重减轻产生显著影响。未来的研究应考察该技术对体重减轻的长期和独立影响，以及这种干预形式对哪些人最有效。
