Preliminary Efficacy of a Strength Training Intervention on Exercise Adherence and Weight Among Pre-Menopausal Women

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

39 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-12-30

Study Completion Date

2023-12-10

Brief Summary

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The purpose of this study is to examine the feasibility and acceptability of a strength training-based intervention on exercise adherence among low active (defined as engaging in physical activity 90 minutes or less per week), pre-menopausal women ages 40-50, along with the effect on weight and various psychosocial measures. Participants will be randomly assigned to a strength training-based intervention or a wait-list control each lasting three months (participants in the no contact, wait-list control condition will have the option of receiving the strength training-based intervention following the three months).

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Detailed Description

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Participants will be randomly assigned to a strength training-based exercise intervention or a no contact, wait-list control each lasting three months (participants in the no contact, wait-list control will have the option of receiving the strength training-based intervention following the three months). The strength training-based exercise intervention will be delivered via group-based Zoom sessions, motivational email messages, and a website. Participants will take part in two group-based Zoom exercise sessions (40-minute exercise sessions and 20 minutes of motivational counseling) and two individual exercise sessions per week for six months. Exercise sessions will include a combination of various aerobic (e.g., jogging in place, high knees) and muscle strengthening exercises (e.g., burpees, push-ups, lunges, body weight squats) designed to keep heart rate in the 60-85% range of maximum heart rate. Participants will choose from a variety of options for their two individual sessions (e.g., online exercise video, jogging or walking outside, prescribed exercise session listed on the website, or any other exercise) and modifications for each exercise will be made depending on the participant's ability and current fitness and strength level (e.g., wall push-ups vs. knee push-ups vs. regular push-ups). Participants will be instructed to stop exercising if problems occur and will receive training and handouts on how to recognize problems such as angina and myocardial infarction symptoms.

Self-Determination Theory (SDT) and habit formation theory will guide the content of the counseling portion of the Zoom sessions and the motivational features of the study website and text messages. Motivational counseling will be focused on increasing motivation to exercise and habit formation. The goal is to achieve integrated regulation and therefore, the health counselor will focus on positive affective response to exercise sessions and discuss how being physically active is becoming part of their self-identity. The goal will be high intrinsic motivation (i.e., individuals engage in exercise due to inherent pleasure) since it is related to higher levels of exercise. Strength training-based participants will also receive access to a mobile phone-friendly study website and will receive emails. Both the website and email messages will contain motivational content to complete the exercise sessions. The motivational website will also include an online log to track completion of home-based sessions and options for individual-based exercise sessions.. Assessment of exercise adherence, weight, and psychosocial variables will occur at baseline and three months.

Conditions

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Physical Inactivity Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Strength training-based exercise

The strength training-based exercise intervention will be delivered via group-based Zoom sessions, motivational text messages, and a website. Participants will take part in two group-based Zoom exercise sessions (40-minute exercise sessions and 20 minutes of motivational counseling) and two individual exercise sessions per week for three months. Exercise sessions will include a combination of various aerobic and muscle strengthening exercises designed to keep heart rate in the 60-85% range of maximum heart rate. Motivational counseling will be focused on increasing motivation to exercise and habit formation. Strength training-based participants will also receive access to a mobile phone-friendly study website and will receive email messages. Both the website and email messages will contain motivational content to complete the exercise sessions.

Group Type EXPERIMENTAL

Strength training-based exercise

Intervention Type BEHAVIORAL

Participants will take part in two group-based Zoom exercise sessions and two individual exercise sessions per week for three months. Exercise sessions will include a combination of various aerobic (e.g., jogging in place, high knees) and muscle strengthening exercises (e.g., burpees, push-ups, lunges, body weight squats) designed to keep heart rate in the 60-85% range of maximum heart rate. Participants will choose from a variety of options for their two individual sessions (e.g., online exercise video, jogging or walking outside, prescribed exercise session listed on the website, or any other exercise) and modifications for each exercise will be made depending on the participant's ability and current fitness and strength level. Participants will be instructed to stop exercising if problems occur and will receive training and handouts on how to recognize problems such as angina and myocardial infarction.

No contact, wait-list control

Participants in the no contact, wait-list control intervention will participate in assessments at baseline and three months. Following the six month assessment, participants will have the option of receiving the strength training-based intervention as described above.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Strength training-based exercise

Participants will take part in two group-based Zoom exercise sessions and two individual exercise sessions per week for three months. Exercise sessions will include a combination of various aerobic (e.g., jogging in place, high knees) and muscle strengthening exercises (e.g., burpees, push-ups, lunges, body weight squats) designed to keep heart rate in the 60-85% range of maximum heart rate. Participants will choose from a variety of options for their two individual sessions (e.g., online exercise video, jogging or walking outside, prescribed exercise session listed on the website, or any other exercise) and modifications for each exercise will be made depending on the participant's ability and current fitness and strength level. Participants will be instructed to stop exercising if problems occur and will receive training and handouts on how to recognize problems such as angina and myocardial infarction.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* 1\) pre-menopausal women ages 40-50 years; (2) engaging in 90 minutes or less of exercise per week; (3) no exercise contraindications; (4) adequate space at home to complete exercise sessions and capacity to use Zoom via a mobile device or computer; (5) available to attend two zoom-based sessions a week; (6) be able to read, understand, and speak in the English language (7) willing to be randomly assigned to either study condition (8) access to iPhone 8 or later with iOS 16 or later

Minimum Eligible Age

40 Years

Maximum Eligible Age

50 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes