The Blossom Project: "BlossomUP" Methods to Decrease Sedentary Time in Pregnancy

Summary

Multiple studies have demonstrated a very low prevalence of women meeting physical activity and weight gain recommendations during pregnancy. Additionally, previous Blossom Project studies have shown that when pregnant women engage in a 20 minute walk each day, they spend significantly more time sitting in addition to longer bouts of sitting resulting in increased total sedentary time. We are going to test which method works best to decrease sitting time, and how those methods effect metabolic parameters such as insulin resistance and blood glucose. This study will consist of three groups, each utilizing a commercially available fitness tracker, Fitbit. Group 1 (SR): will reduce sedentary time by interrupting prolonged sitting. Group 2 (WALK): will reduce sedentary time via walking. Group 3 (UC): will continue on with their normal daily routine; usual care.

Conditions

• Sedentary Lifestyle
• Diabetes Mellitus, Gestational

Interventions

OTHER

Limit accumulation of sedentary time

Participants in this group receive a Fitbit Alta activity monitor, worn on the wrist for the entire intervention. The Alta is a fitness tracker designed to help individuals track their sedentary and physical activity behaviors when paired with an external device (e.g. iPhone, computer). The Sensewear armband and ActivPAL are not worn as part of the intervention; they are assessment tools used at the beginning and end of the study. Each participant will have a Fitbit account set up with a Blossom Project username code to ensure privacy of the participant's identity. Participants will be asked to achieve a goal of 250 steps/hour. Using the "reminder to move" function, if a participant has not reached the hourly goal at 50 minutes, the Alta will vibrate, cueing the participant to walk.

OTHER

Walk

Participants in this group receive a Fitbit Charge activity monitor. There is no "reminder to move" function on this band. The Charge, worn on the wrist for the entire intervention is a fitness tracker designed to help individuals track their physical activity when paired with an external device. The Sensewear armband and ActivPAL are not worn as part of the intervention; they are assessment tools used at the beginning and end of the study. Each participant will have a Fitbit account set up with a Blossom Project username code to ensure privacy of the participant's identity. Participants will be asked to meet current pregnancy physical activity recommendations; walking 30 minutes, most days of the week (150 minutes/week). Participants can use the app to view their "active minutes."

OTHER

Normal daily routine; Usual Care

Participants in this group will not be provided with a Fitbit Charge activity monitor, as participants will be asked to simply continue on with their normal daily routine. The Sensewear armband and ActivPAL are not worn as part of the intervention; they are assessment tools used at the beginning and end of the study.

Sponsors & Collaborators

• Iowa State University

  lead OTHER

Principal Investigators

• Christina Campbell, PhD · Iowa State University

Study Design

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

45 Years

Sex

FEMALE

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2016-02-29

Primary Completion

2016-12-31

Completion

2016-12-31

Countries

• United States

Study Locations