Community-based Intervention Effects on Older Adults' Physical Activity
| Status: | Recruiting |
|---|---|
| Healthy: | No |
| Age Range: | 70 - Any |
| Updated: | 7/13/2018 |
| Start Date: | November 17, 2017 |
| End Date: | May 1, 2022 |
| Contact: | Siobhan K McMahon, PhD |
| Email: | skmcmaho@umn.edu |
| Phone: | 612-625-3225 |
Community-based Intervention Effects on Older Adults' Physical Activity and Falls (R01)
The research team will conduct a 2 x 2 factorial experiment testing the individual and
combined effects of two empirically and theoretically relevant sets of behavior change
strategies on community-dwelling older adults' physical activity. To do this the
investigators will randomize participants >= 70 years old (n = 308) to 1 of 4 experimental
conditions. All conditions include an evidence-based physical activity protocol endorsed by
Centers for Disease Control and Prevention (CDC) for use by all older adults, including those
with frailty and multiple co-morbidities and the commercially available physical activity
monitor (e.g., Fitbit) to augment intervention delivery. Intervention components that are
experimental and vary by condition are the sets of behavior change strategies which will be
combined with the physical activity protocol and the physical activity monitor. Condition 1
has no specific behavior change strategies; Condition 2 includes an intervention component
comprised of 5 interpersonal behavior change strategies, such as facilitating social support
and social comparison; Condition 3 includes an intervention component comprised of 5
intrapersonal behavior change strategies, such as setting personally meaningful goals; and
Condition 4 includes both sets of behavior change strategies -- 5 interpersonal strategies
combined with 5 intrapersonal behavior change strategies.
combined effects of two empirically and theoretically relevant sets of behavior change
strategies on community-dwelling older adults' physical activity. To do this the
investigators will randomize participants >= 70 years old (n = 308) to 1 of 4 experimental
conditions. All conditions include an evidence-based physical activity protocol endorsed by
Centers for Disease Control and Prevention (CDC) for use by all older adults, including those
with frailty and multiple co-morbidities and the commercially available physical activity
monitor (e.g., Fitbit) to augment intervention delivery. Intervention components that are
experimental and vary by condition are the sets of behavior change strategies which will be
combined with the physical activity protocol and the physical activity monitor. Condition 1
has no specific behavior change strategies; Condition 2 includes an intervention component
comprised of 5 interpersonal behavior change strategies, such as facilitating social support
and social comparison; Condition 3 includes an intervention component comprised of 5
intrapersonal behavior change strategies, such as setting personally meaningful goals; and
Condition 4 includes both sets of behavior change strategies -- 5 interpersonal strategies
combined with 5 intrapersonal behavior change strategies.
To fully examine the effects of these experimental components, The investigators have
delineated Primary, Secondary and Exploratory Aims:
Primary Aim: Determine which experimental intervention component(s) increase PA among
community-dwelling older adults post-intervention: immediately, 6 months, and 12 months.
Hypothesis: Participants receiving the interpersonal set of behavior change strategies
(conditions 2 and 4) will have clinically meaningful increases in PA post- intervention (at
all 3 time-points), compared to participants not receiving these strategies (conditions 1 and
3).
Secondary Aim: Determine which experimental intervention component(s)decrease fall occurrence
and increase quality of life (QOL) among community-dwelling older adults 12 months
post-intervention. Hypotheses: Participants receiving the set of interpersonal behavior
change strategies will have clinically meaningful reductions in falls and increases in QOL,
12 months post-intervention, compared to participants not receiving these strategies.
Exploratory Aim: Evaluate experimental intervention component effects on targeted
psychosocial constructs (social support; readiness; self-regulation) and physical constructs
(functional leg strength and balance), which are theorized as mechanisms of change--and
whether these mechanisms mediate the effects of experimental intervention components on PA
and falls. Hypotheses: Receiving the interpersonal behavioral change strategies, relative to
not receiving these strategies, will elicit increases in targeted psychosocial constructs and
increases in physical constructs, which in turn will mediate the intervention's effects on PA
behavior and falls.
delineated Primary, Secondary and Exploratory Aims:
Primary Aim: Determine which experimental intervention component(s) increase PA among
community-dwelling older adults post-intervention: immediately, 6 months, and 12 months.
Hypothesis: Participants receiving the interpersonal set of behavior change strategies
(conditions 2 and 4) will have clinically meaningful increases in PA post- intervention (at
all 3 time-points), compared to participants not receiving these strategies (conditions 1 and
3).
Secondary Aim: Determine which experimental intervention component(s)decrease fall occurrence
and increase quality of life (QOL) among community-dwelling older adults 12 months
post-intervention. Hypotheses: Participants receiving the set of interpersonal behavior
change strategies will have clinically meaningful reductions in falls and increases in QOL,
12 months post-intervention, compared to participants not receiving these strategies.
Exploratory Aim: Evaluate experimental intervention component effects on targeted
psychosocial constructs (social support; readiness; self-regulation) and physical constructs
(functional leg strength and balance), which are theorized as mechanisms of change--and
whether these mechanisms mediate the effects of experimental intervention components on PA
and falls. Hypotheses: Receiving the interpersonal behavioral change strategies, relative to
not receiving these strategies, will elicit increases in targeted psychosocial constructs and
increases in physical constructs, which in turn will mediate the intervention's effects on PA
behavior and falls.
Inclusion Criteria:
- ≥70 years of age
- English speaking
- Low levels of PA (below recommended guidelines)
- Self-reported fall risk as guided by the CDC, Steadi fall risk screener
- One or more falls in the last year
- Unsteadiness when standing or walking
- Worries about falling
- Participants who self-report the following symptoms will require clearance from a
primary provider (as guided by the Exercise and Screening for You Questionnaire)
- Pain, tightness or pressure in chest during PA (walking, climbing stairs,
household chores, similar activities) that have not been checked and/ or treated
by a healthcare provider
- Current dizziness that have not been checked and/ or treated by a healthcare
provider
- Current, frequent falls that have not been checked and/ or treated by a
healthcare provider
Exclusion Criteria:
- Lower extremity injury or surgery within the past 6 weeks
- Inability to walk
- Formal diagnosis of neurocognitive impairment or dementia
We found this trial at
1
site
Minneapolis, Minnesota 55455
Principal Investigator: Siobhan K McMahon, PhD
Phone: 218-290-3422
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