The Effect of a Diet- and Exercise- Related Weight Control Intervention Program on Obesity in Adult Aged 40 and Over

The Association of Obesity With Food Intake and Metabolic Syndrome in Adult Aged 40 and Over and the Effect of a Diet- and Exercise- Related Weight Control Intervention Program on Obesity

The purpose of this study is to assess study subjects' adherence to different weight control intervention programs and the effect of intervention programs on physical and biochemical examinations, physical fitness, food intake and exercise behaviors and the prevalence of metabolic syndrome and its components' abnormalities.

Study Overview

• Status: Completed
• Conditions: Obesity; Metabolic Syndrome
• Intervention / Treatment: Behavioral: Individualized education; Behavioral: Grouped education

Detailed Description

Obesity and metabolic syndrome increase the risk of developing cardiovascular disease. Besides, they prevail around the world and certainly become the most important health problems globally. Dietary intake and exercise are regarded as the first line approach to reduce the occurrence of obesity and metabolic syndrome. The purpose of this study is to assess study subjects' adherence to different weight control intervention programs and the effect of intervention programs on physical and biochemical examinations, physical fitness, food intake and exercise behaviors and the prevalence of metabolic syndrome and its components' abnormalities.

This is a two-year project. In the first year, we estimated the prevalence of obesity and metabolic syndrome and explored their relationship with dietary intake and exercise status using the cross-sectional framework in subjects aged 40 years and over from Taichung Community Health Study. Then, we conducted a randomized controlled trial to evaluate the effects of three types of weight control educational intervention programs. Obese subjects were randomly allocated into "individualized health education group", "fellowship health education group" and "mail-delivered health education group". The sample size for these three groups was 79, 81, 80, respectively. All subjects received one of three 6-month interventions and were followed up for 1 year and were assessed at 6-month interval.

This study adopted the criteria of WHO for Asia area and the Department of Health (DOH), Executive Yuan, Taiwan to define the obesity. The prevalence of obesity for WHO definition modified for Asians and DOH among Taichung residents aged forty years old and over is 37.34% and 18.79%, respectively. For the effectiveness of weight control educational programs, after 6-month intervention, reductions in weight, BMI, waist, hip, arm, and bad diet habit were observed in all groups. And after 6-month intervention, reductions in BMI is significantly greater in the individualized and fellowship weight control groups than in the "health education group". After 6-month educational intervention, metabolic syndrome in the individualized and fellowship health education groups decreased from 78.48% and 72.84% to 60.76% and 61.73%, respectively, which corresponded to reductions of 17.72% and 11.11% of baseline metabolic syndrome.

Our study's findings indicate that individualized and fellowship health education groups modify food intake and exercise behaviors, and further reduce body composition, level of biomarkers and prevalence of metabolic syndrome and its components abnormalities.

• Study Type: Interventional
• Enrollment (Actual): 240
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Taiwan
  • Taichung, Taiwan
    • Department of Famility Medicine,China Medical University Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 40 years to 75 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Those with overweight or central obesity (body mass index >= 24 kg/m2) and/or waist circumference >= 90 cm in men or >= 80 cm in women.

Exclusion Criteria:

• Those with impaired hearing,
• Those who are handicap,
• Those living outland,
• Those who are older than 75 years old, and
• Those participates that cannot keep to regular follow-up in this study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Health Services Research
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Individualized education; Individualized consultation of health problem, dietary intake and exercise	Behavioral: Individualized education; We conducted a randomized controlled trial to evaluate the effects of three types of weight control educational intervention programs. Obese subjects were randomly allocated into "individualized health education group", "group weight control education" and "mail-delivered health education group".Obese subjects who were randomly allocated into "individualized health education group" received consulting services provided by a doctor, nutritionist and fitness expert. The interventions were 12 sessions over 6 months.
Experimental: Grouped education; Grouped consultation of health problem, dietary intake and exercise	Behavioral: Grouped education; We conducted a randomized controlled trial to evaluate the effects of three types of weight control educational intervention programs. Obese subjects were randomly allocated into "individualized health education group", "group weight control education" and "mail-delivered health education group".Obese subjects who were randomly allocated into "grouped health education group" attended 12 sessions of group intervention over 6 months.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Weight, BMI, total body fat and waist circumference	3,6 and 12 months since intervention

Secondary Outcome Measures

Outcome Measure	Time Frame
Metabolic syndrome and its components	3,6 and 12 months since intervention

Collaborators and Investigators

• Sponsor: China Medical University Hospital
• Collaborators: Department of Health, Executive Yuan, R.O.C. (Taiwan)
• Investigators: Study Chair: Cheng-Chieh Lin, Ph.D., China Medical University Hospital,Taiwan

Study record dates

Study Major Dates

• Study Start: March 1, 2007
• Primary Completion (Actual): February 1, 2009
• Study Completion (Actual): February 1, 2009

Study Registration Dates

• First Submitted: December 24, 2009
• First Submitted That Met QC Criteria: December 28, 2009
• First Posted (Estimate): December 29, 2009

Study Record Updates

• Last Update Posted (Estimate): December 29, 2009
• Last Update Submitted That Met QC Criteria: December 28, 2009
• Last Verified: December 1, 2009

More Information

Terms related to this study

• Keywords: Obesity; Metabolic syndrome; Food intake; Weight control educational intervention
• Additional Relevant MeSH Terms: Pathologic Processes; Glucose Metabolism Disorders; Metabolic Diseases; Disease; Overnutrition; Nutrition Disorders; Overweight; Body Weight; Insulin Resistance; Hyperinsulinism; Syndrome; Obesity; Metabolic Syndrome
• Other Study ID Numbers: DOH97-TD-F-113-96002