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Investigating the effect of physical activity on weight loss

The impact of a theory-based educational program using the Health Belief Model and Motivational Interviewing on physical activity in women with high body mass index covered by the comprehensive health centers of Arsanjan county

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
IRCT
Registry ID
IRCT20250922067326N1
Enrollment
114
Registered
2025-09-28
Start date
2025-10-23
Completion date
Unknown
Last updated
2025-10-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Overweight. Encounter for other general examination

Interventions

Intervention 1: Intervention Group: The intervention will consist of several sessions delivered over a specific period, such as 8 weeks. The educational methods and the number of sessions required wil

Sponsors

Shiraz University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
20 Years to 50 Years

Inclusion criteria

Inclusion criteria: Women aged 20 to 50 (the age limit of 50 was chosen because menopause occurs after 50, which may cause issues for clients that require different interventions). Obese or overweight with a Body Mass Index (BMI) greater than 25, not postmenopausal, without metabolic diseases, without hormonal problems, willing to participate in the study and sign the informed consent form

Exclusion criteria

Exclusion criteria: Absence from more than two training sessions.Lack of willingness to continue and withdrawal from further cooperation.Leaving the research environment for any reason.Incomplete filling out of the questionnaires.If a participant sustains an injury or develops an illness during the study that prevents them from continuing

Design outcomes

Primary

MeasureTime frame
Physical activity. Timepoint: At the beginning of the intervention and 2 months after the intervention. Method of measurement: The data collection tool in this study was a questionnaire, which consisted of four sections. The first section included demographic questions, comprising 15 items such as height, weight, age, pregnancy history, and level of physical activity. The second section of the questionnaire contained constructs from the Health Belief Model. The perceived susceptibility construct included 4 items, the perceived severity construct had 5 items, the perceived benefits construct had 5 items, the perceived barriers construct had 5 items, and the self-efficacy construct also had 4 items, all on a Likert scale (1=Strongly Disagree, 5=Strongly Agree). Additionally, the cues to action construct consisted of 5 questions answered as Yes or No (1=Yes, 0=No). The validity and reliability of this tool were confirmed in the study by Khani Jahouni et al. (2016). The validity of the questionnaire items, assessed using the Lavshe table index, indicated favorable content validity of the questionnaire.The third section included the Global Physical Activity Questionnaire (GPAQ) to assess physical activity. This questionnaire contains 16 questions in three sections: work-related activity in the first section, travel-related activity in the second section, and leisure-time activity in the third section. Respondents are also asked to specify the number of hours of physical activity they engage in per day. Physical activity is categorized as moderate and vigorous in this questionnaire. The validity and reliability of this questionnaire were confirmed in the study by Mazahari et al. (2022). In a reliability assessment during a pilot study on 20 individuals similar to the target population using the test-retest method, a Cronbach's alpha of 0.878 was obtained.The fourth section will utilize the Sports Motivation Questionnaire, which includes 24 questions.

Secondary

MeasureTime frame
Body Mass. Timepoint: Before the intervention and two months after the completion of the intervention. Method of measurement: It will be assessed through the measurement of height and weight and tracking their changes.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactZahra Rahimi

Shiraz University of Medical Sciences

zahrarahimi137509@gmail.com+98 71 4352 3662

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026