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Summarizing The Weight Management Wisdom: What Works in Weight Management? Phillip J. Brantley, PhD Pennington Biomedical Research Center A Typical Pattern of Weight Loss & Regain in Behavioral Interventions Long-term outcomes for behavioral weight loss treatment (Kramer et al., 1989)

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summarizing the weight management wisdom what works in weight management

Summarizing The Weight Management Wisdom: What Works in Weight Management?

Phillip J. Brantley, PhD

Pennington Biomedical Research Center

a typical pattern of weight loss regain in behavioral interventions
A Typical Pattern of Weight Loss & Regain in Behavioral Interventions

Long-term outcomes for behavioral weight loss treatment (Kramer et al., 1989)

review of behavioral weight loss treatment perri corsica 2002
Review of Behavioral Weight Loss Treatment (Perri & Corsica, 2002)
  • Reviewed nine studies with follow-ups of two years or more (2-12 years)
  • Initial weight loss across studies ranged from 4.5 to 14.3 kg (M=8.3 kg)
  • Every study met the IOM criterion for maintenance at one year (>5% reduction)
  • Net loss across studies at final follow-up averaged 3 kg with only 2 of 9 meeting IOM Criterion at final follow-up
weight loss maintenance trial
Weight Loss Maintenance Trial
  • A multicenter, randomized clinical trial to determine the effectiveness of two innovative behavioral interventions, compared to an advice only control group in maintaining weight loss
wlm sites
WLM: Sites
  • Clinical Sites
    • Pennington Biomedical Research Center
    • Duke University Medical Center
    • Johns Hopkins School of Medicine
    • Kaiser Center for Health Research
  • Coordinating Center
    • Kaiser Center for Health Research
  • Project Office
    • NHLBI Prevention Scientific Research Group
reasons for weight regain
Reasons for Weight Regain
  • Loss of motivation
  • Life stressors
  • Hunger/cravings
  • Obesogenic environment
  • Obesity is a chronic, possibly lifelong problem
factors associated with weight maintenance
Factors Associated with Weight Maintenance
  • Extended Treatment
  • Treatment Intensity
  • Continued Contact
  • Level of Physical Activity
  • Motivational Enhancement
  • Maintenance Specific Skills
  • Other
extended treatment
Extended Treatment

Perri et al (1989) compared a standard 20 week program with an extended 40 week program. Clients in the extended treatment increased their weight losses by 35% during weeks 20-40.

Follow-up data showed that after the extended treatment was concluded, clients reduced theiradherence and began to regain weight. (Perri, Nezu, Patti, & McCann, 1989)

review of extended behavioral treatment perri corsica 2002
Review of Extended Behavioral Treatment (Perri & Corsica, 2002)
  • Reviewed 13 studies that extended group treatment more than 6 months using weekly or biweekly sessions (35-65 sessions over 40-78 weeks
  • Extended Treatment groups averaged maintaining 96 % of weight loss compared to 66% in controls
major problem with with extended treatment low adherence
Major Problem with with Extended Treatment: Low Adherence
  • Attendance for 1st six months was 65%, for next 12 months it averaged 25%

Jeffery et al (1993)

  • PREMIER similar rates
factors associated with weight maintenance11
Factors Associated with Weight Maintenance
  • Extended Treatment
  • Treatment Intensity
  • Continued Contact
  • Level of Physical Activity
  • Motivational Enhancement
  • Maintenance Specific Skills
  • Other
kicking it up a notch
“Kicking it up a notch”
  • Structured meal plans and portion controlled diets early on
  • Home based or supervised exercise
  • Motivational strategies,e.g., recruit with friends, group competition
factors associated with weight maintenance14
Factors Associated with Weight Maintenance
  • Extended Treatment
  • Treatment Intensity
  • Continued Contact
  • Level of Physical Activity
  • Motivational Enhancement
  • Maintenance Specific Skills
  • Other
telephone prompts wing et al 1996
Telephone Prompts(Wing et al, 1996)
  • Weekly telephone prompts used to promote self-monitoring of body weight and food intake over a 12 month post-treatment period.
  • Contacts were made by non-interventionists who did not offer counseling or guidance.
  • Although telephone prompts were associated with less weight regain (r=-.52), they did not enhance maintenance of weight loss compared to no-contact control condition.
telephone and mail contacts by interventionists perri et al 1984
Telephone and Mail Contacts by Interventionists (Perri et al, 1984)
  • Most telephone and mail contacts were made by the interventionist who conducted the initial weight loss intervention
  • Group who received post treatment contacts maintained greater weight loss
internet technology to promote weight maintenance
Internet Technology to Promote Weight Maintenance
  • Internet programs using email and Internet Web sites have been shown to improve diabetes management, promote physical activity and improve quality of life in patients with HIV/AIDS
  • Studies look promising for weight maintenance (e.g., Harvey-Berino et al, 2002;2004; Tate 2006; WLM Protocol)
  • Only people who already use internet will participant…will it maintain weight for extended time period ?
factors associated with weight maintenance18
Factors Associated with Weight Maintenance
  • Extended Treatment
  • Treatment Intensity
  • Continued Contact
  • Level of Physical Activity
  • Motivational Enhancement
  • Maintenance Specific Skills
  • Other
physical activity weight loss
Physical Activity & Weight Loss
  • Even though physical activity is NOT the most efficient method of LOSING weight, it appears to be CRUCIAL to maintaining weight loss.
  • It may be more than calories burned … exercise may enhance mood or motivation for caloric control ?
factors associated with weight maintenance20
Factors Associated with Weight Maintenance
  • Extended Treatment
  • Treatment Intensity
  • Continued Contact
  • Level of Physical Activity
  • Motivational Enhancement
  • Maintenance Specific Skills
  • Other
motivational enhancement methods
Motivational Enhancement Methods
  • Financial Incentives
  • Social Support
  • Motivational Interviewing
financial incentives
Financial Incentives
  • Jeffery et al, 1993 Paid participants $25 per week over an 18 month period to loss and maintain weight…did not improve
  • Kramer et al, 1986 Collected $100 from participants at start of weight loss…at beginning of maintenance either gave it back, paid it contingent on attendance or paid it contingent on weight maintenance… no difference
social support
Social Support
  • Modest support for including spouses or significant others
  • Support triggered by financial incentives for group weight loss is promising (Kramer et al, 1986: Perri et al, 1988)
  • Also promising is allowing groups of friends to participate together in weight loss (Wing and Jeffery, 1999)
motivational interviewing
Motivational Interviewing
  • Interaction style: interact with participants based on their level of motivation (“stage of change”)
  • Elicit change statements and realistic plans…Build confidence…avoid lecturing
  • Impacts treatment outcome by promoting better adherence (better attendance, more participation)

Zweben & Zuckoff in Miller and Rollnick, 2002

factors associated with weight maintenance25
Factors Associated with Weight Maintenance
  • Extended Treatment
  • Treatment Intensity
  • Continued Contact
  • Level of Physical Activity
  • Motivational Enhancement
  • Maintenance Specific Skills
  • Other
maintenance specific skills
Maintenance Specific Skills
  • “Strategies that are effective for maintaining an energy deficit in a period of weight loss may be different than those involved in maintaining a stable energy balance around a lower weight”

Jeffery et al, 2000

relapse prevention training
Relapse Prevention Training
  • Teaches people to avoid or cope with slips and relapses
  • Slips lead to negative psychological reactions that precipitate a return to pretreatment patterns
  • RPT in initial treatment phase isn’t very effective for maintenance
  • Appears more effective during maintenance phase of Tx
factors associated with weight maintenance28
Factors Associated with Weight Maintenance
  • Extended Treatment
  • Treatment Intensity
  • Continued Contact
  • Level of Physical Activity
  • Motivational Enhancement
  • Maintenance Specific Skills
  • Other Maintenance Tools
problem solving
Problem Solving
  • Systematic method for coping with barriers or problems
  • Uses: Problem Identification, Generation of Alternatives, Selection of Best Solution, Implementation, Evaluation
  • Leader can do it or facilitate it
  • Successful use in weight maintenance by Perri et al
self monitoring
Self-Monitoring
  • Food and activity monitoring is one of best predictors of success in weight loss….unclear of its role in maintenance
  • Nearly all extended treatment studies promote recording of food intake and weight
  • National Weight Control Registry…weigh at least weekly…attempt to eat reduced fat and calories
what does not work by alone
What does not work by alone?
  • Individual monetary incentives
  • RPT without contact
  • Telephone prompts by non-interventionists
  • Personal trainers
  • Frequent group meetings
  • Supervised group exercise
  • Reliance on meal replacements
what works
What works?
  • Multi-component Program
    • Continued contact providing accountability and motivation
    • Physical activity promotion
    • RPT by interventionist
    • Problem solving
    • Weekly weighing
    • Reduced calorie and fat diet