Women's Health Initiative Silent Atrial Fibrillation Recording Study (WHISH STAR)

Women's Health Initiative Strong and Healthy Silent Atrial Fibrillation Recording Study

The purpose of the WHISH STAR study is to investigate whether or not those who are randomized to exercise intervention have higher rates of atrial fibrillation on review of medical records and, in a subset, on screening with a cardiac ECG patch monitor. We will also study whether those with a known history of AF have any changes in AF hospitalizations due to exercise.

Study Overview

• Status: Completed
• Conditions: Atrial Fibrillation
• Intervention / Treatment: Behavioral: Physical Activity

Detailed Description

The Silent Atrial Fibrillation Recording study (STAR) study is an ancillary study of the NIH-funded Women's Health Initiative Strong and Healthy (WHISH). The purpose of the Women's Health Initiative Strong and Healthy study (WHISH) is to investigate if light to moderate exercise decreases incident atrial fibrillation (AF) among women over 65 who have no baseline AF. The purpose of the STAR study is to investigate the effect of exercise intervention on incident atrial fibrillation ascertained with diagnostic codes. In a subset of women, subclinical atrial fibrillation will be ascertained with cardiac patch ECG monitoring technology (iRhythm's ZIO® XT Patch). This subgroup of WHISH study participants will undergo an 8 day cardiac patch recording at baseline, six (6) months, and one (1) year.

• Study Type: Interventional
• Enrollment (Actual): 1257
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • California
    • Stanford, California, United States, 94305
      • Stanford University School of Medicine

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 65 years to 100 years (Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Female

Description

Inclusion Criteria:

• Subjects already enrolled in the parent WHISH study.
• Subjects who are at high risk of developing atrial fibrillation.

Exclusion Criteria:

• Subjects who have had atrial fibrillation at baseline.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Physical Activity Intervention; The Physical Activity Intervention Group will receive guidance on being physically active, including aerobics, flexibility, balance, strength, and decreased sedentary time. The primary resource is the National Institute of Aging Go4Life exercise and physical activity materials. The materials are based on the United States national guidelines for physical activity for older adults. Participants will wear the Zio patch monitor (electrocardiographic loop monitoring device) for 8 days at baseline, as well as at 6 months and again at one year, for a total of 3 times.	Behavioral: Physical Activity; The PA intervention will consist of a multimodal activity program of aerobics, balance, strength, flexibility. The intervention will involve encouraging participants to increase all forms of PA throughout the day and to decrease sedentary time, such as sitting. This may include activities such as leisure sports, gardening, use of stairs instead of escalators, leisurely walks with friends, and less use of remote control devices.The intervention is conducted primarily by mail with website support and resources available.
No Intervention: Usual Activity Control; Participants will wear the Zio patch monitor (electrocardiographic loop monitoring device) for 8 days at baseline, as well as at 6 months and again at one year, for a total of 3 times. Participants carry about their normal activities during this period.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Change in Incidence of Atrial Fibrillation Due to Exercise	One year
Number of Participants without Clinically Diagnosed Atrial Fibrillation (AF) Found to have Silent AF with Prolonged ECG Patch Monitoring	One year

Collaborators and Investigators

• Sponsor: Stanford University
• Investigators: Principal Investigator: Marco Perez, MD, Stanford University

Study record dates

Study Major Dates

• Study Start (Actual): September 8, 2017
• Primary Completion (Actual): February 11, 2020
• Study Completion (Actual): February 11, 2020

Study Registration Dates

• First Submitted: May 4, 2022
• First Submitted That Met QC Criteria: May 4, 2022
• First Posted (Actual): May 9, 2022

Study Record Updates

• Last Update Posted (Actual): May 9, 2022
• Last Update Submitted That Met QC Criteria: May 4, 2022
• Last Verified: May 1, 2022

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Heart Diseases; Cardiovascular Diseases; Arrhythmias, Cardiac; Atrial Fibrillation
• Other Study ID Numbers: 40082

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No