Changes in Habitual Physical Activity and Inactivity

NCT ID: NCT01580930

Last Updated: 2012-04-20

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 57 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2010-03-31
• Study Completion Date: 2011-05-31

Brief Summary

The purpose of this study is to determine if individuals involved in exercise training change habitual activity and inactivity behavior outside of exercise training. Eligible participants were randomly assigned to one of four groups: control, exercise training, sedentary time reduction, or exercise training plus sedentary time reduction. It was hypothesized that participants in the exercise training group will compensate for exercise training by reducing free-living physical activity behavior and increasing sedentary time. Participant free-living behavior was monitored for one week at baseline, 3, 6, 9 and 12 weeks using an activPAL wearable monitor.

Conditions

Habitual Physical Activity; Sedentary Time

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Control group

Group had outcome measures collected and were instructed to not change activity and sedentary time behavior

Group Type: NO_INTERVENTION

No interventions assigned to this group

Exercise

Participants performed 5 days per week, 40 min per session of exercise training under direct supervision of personal trainer.

Group Type: EXPERIMENTAL

exercise training

Intervention Type: BEHAVIORAL

12 weeks, 5 days of week, 40 min per session of exercise training

Sedentary time reduction

participants were give strategies to reduce sedentary time

Group Type: EXPERIMENTAL

sedentary time reduction

Intervention Type: BEHAVIORAL

participants provided with strategies to decrease sitting

exercise plus sedentary time reduction

Participants completed exercise training (5 days per week, 40 min per session) plus were given sedentary time reduction intervention

Group Type: EXPERIMENTAL

exercsie training plus sedentary time reduction

Intervention Type: BEHAVIORAL

12 weeks of exercise training (5 days a week, 40 min per session) plus given strategies for reducing sitting time

Interventions

exercise training

12 weeks, 5 days of week, 40 min per session of exercise training

Intervention Type: BEHAVIORAL

sedentary time reduction

participants provided with strategies to decrease sitting

Intervention Type: BEHAVIORAL

exercsie training plus sedentary time reduction

12 weeks of exercise training (5 days a week, 40 min per session) plus given strategies for reducing sitting time

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

Eligible participants were those at increased risk of cardiovascular disease, based on meeting two of the following three criteria:

1. Pre-hypertensive: resting blood pressure between 125-160 mm Hg systolic and/or 85-100 mm Hg diastolic,

2. overweight/obese: body mass index (BMI) between 25 and 45 kg∙m-2,

3. high central adiposity: as defined by elevated natural waist circumference (> 102 cm [males] > 88cm [females]), a surrogate measure of visceral fat

4. low aerobic fitness (VO2 peak ≤ 50th percentile of age and sex specific norms)

5. exercising less than three days per week for less than 20 minutes per session for the preceding six months

Exclusion Criteria

• major orthopedic limitations,
• wheelchair use or musculoskeletal problems that affected mobility,
• life-threatening illness (e.g., terminal cancer),
• chronic diseases (e.g., diagnosed heart disease, diabetes, emphysema) or
• any condition for which a physician did not recommend exercise. Participants were excluded if they had gastric bypass or lap-band surgery within the last year, were taking medication for type II diabetes (e.g. metformin) or beta-blocker medication for high blood pressure.

• Minimum Eligible Age: 20 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

National Heart, Lung, and Blood Institute (NHLBI)

NIH

Sponsor Role: collaborator

University of Massachusetts, Amherst

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

UMass Amherst Physical Activity and Health Lab

Amherst, Massachusetts, United States

Countries

United States

Other Identifiers

RC1HL099557

Identifier Type: NIH

Identifier Source: secondary_id

View Link

Kozey-Keadle

Identifier Type: -

Identifier Source: org_study_id