Obesity, Physical Inactivity
Conditions
Keywords
strength training, group-based exercise, pre-menopausal, exercise adherence
Brief summary
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).
Detailed description
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.
Interventions
BEHAVIORALStrength 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.
Sponsors
University of Minnesota
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
FEMALE
Age
40 Years to 50 Years
Healthy volunteers
Yes
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
Exclusion criteria
* Specific
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Exercise Adherence | from date of randomization until the date of three month assessment; up to three months | Apple Watch |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Weight | from date of randomization until the date of three month assessment; up to three months | Withings Smart Scale |
Other
| Measure | Time frame | Description |
|---|---|---|
| Motives for Physical Activity Measure- Revised (MPAM-R) | from date of randomization until the date of three month assessment; up to three months | questionnaire; the Motives for Physical Activity Measure- Revised (MPAM-R) is a 30-item scale that examines five motives for physical activity participation including enjoyment/interest, competence/challenge, social interaction, appearance, and fitness. Composed of 30 items, 7-point Likert scale with 1= not at all true for me to 7= very true for me. Maximum score=210; minimum score=30. Higher score=higher motivation. |
| Physical Activity Self-Efficacy | from date of randomization until the date of three month assessment; up to three months | questionnaire; physical activity self-efficacy measuring how confident of exercise. 5 items. 5-point Likert scale with 1=not at all confident to 5= extremely confident. Maximum value of 25, minimum value of 5 with higher scores indicating higher level of self-efficacy |
| Physical Activity Enjoyment Scale (PACES) | from date of randomization until the date of three month assessment; up to three months | questionnaire; Physical Activity Enjoyment Scale (PACES) is an 18 item scale that assesses enjoyment for physical activity by asking participants to rate how you feel at the moment about the physical activity you have been doing using a 7-point bipolar Likert scale from 1 (I enjoy it) to 7 (I hate it). Higher scores indicate higher enjoyment with range of 18-126 being possible. |
| Social Support for Physical Activity | from date of randomization until the date of three month assessment; up to three months | questionnaire; Social Support for Physical Activity measures perceived social support based on two subscales; family and friends. 13 items. 5-point Likert scale with 0=none and 4=very often. Maximum score= 52; minimum score=0. Higher levels indicate higher level of perceived social support for physical activity. |
| Exercise Feeling Inventory Survey | from date of randomization until the date of three month assessment; up to three months | questionnaire; Exercise Feeling Inventory Survey (EFI) measures feeling states that occur during acute PA bouts. Four feeling states are assessed including revitalization, positive engagement, physical exhaustion, and tranquility. 12 items. 5-point Likert scale; 0= do not feel and 4=feel very strongly. Maximum Score= 48; minimum score=0. Higher score= higher feeling. |
| Outcome Expectations or Exercise | from date of randomization until the date of three month assessment; up to three months | questionnaire; Outcome Expectations for Exercise measures the degree to which individuals agree to statements regarding benefits of exercise. 9 items. 5-point Likert scale with 1= strongly disagree to 5= strongly agree. Maximum value= 45; minimum value= 9 with higher score indicating higher outcome expectations related to exercise. |
| Behavioral Regulation in Exercise Questionnaire (BREQ-2) | from date of randomization until the date of three month assessment; up to three months | questionnaire; the Behavioral Regulation in Exercise Questionnaire (BREQ-2) is a 19-item questionnaire that includes five subscales (intrinsic motivation, identified regulation, introjected regulation, external regulation, and amotivation. This scale is on a 5 point Likert scale ranging from 0 (not true for me) to 4 (very true for me). The minimum score is -24 and the maximum score is +20. Higher positive scores indicate more autonomous motivation whereas lower negative scores indicate less autonomous motivation. |
Countries
United States
Outcome results
None listed