Trial Outcomes & Findings for Web-based Physical Activity Intervention to Promote Physical Activity (NCT NCT05803304)

Participants were recruited through Emory University in Atlanta, Georgia, USA. Participant enrollment began October 16, 2023 and all follow-up assessments were completed by March 13, 2025.

Web-based Physical Activity Intervention to Promote Physical Activity

Participants wore a physical activity tracker, the ActiGraph GT3X+ accelerometer, around their waist for 7 days at Baseline and Month 6 to assess the number of minutes of moderate-to-vigorous physical activity (MVPA) per week.

Participants wore a FitBit physical activity tracker on their wrist to assess the number of minutes of moderate-to-vigorous physical activity (MVPA) per week.The FitBit wrist activity tracker was worn for at least 10 hours per day while awake.

Adherence to PA Guidelines is defined as achieving ≥150 minutes of moderate-to-vigorous physical activity (MVPA) per week. The number of participants adhering to ≥150 minutes of MVPA per week between the Baseline and Month 6 assessments were examined.

Daily step count is measured with a FitBit physical activity tracker worn on the wrist for at least 10 hours per day while awake.

The algorithm provides sex and race-specific estimates for the first CVD event for black and white men and women. Scores are calculated using age, diabetes status (no or yes), sex, smoking status (no or yes), total cholesterol, HDL cholesterol, systolic blood pressure, and treatment for hypertension (no or yes). Dried blood spot (DBS) samples for total cholesterol and HDL cholesterol - the lipid values required to calculate the 2013 ASCVD Risk Calculator Score - were collected from participants at Baseline and Month 6. ASCVD scores range from 0-100% with higher scores representing poor cardiovascular health status.

Waist circumference is measured in inches.

Weight is measured in pounds (lbs). The change from Baseline to Month 6 was assessed for both study arms.

Systolic blood pressure is the amount of pressure the heart generates when pumping blood through the arteries to the body. Normal systolic blood pressure as lower than 120 millimeters of mercury (mmHg).

Diastolic blood pressure is the amount of pressure in your arteries when your heart is at rest between beats. Normal diastolic blood pressure as lower than 80 mmHg.

Life's Essential 8 is a way to assess cardiovascular health developed by the American Heart Association. Life's Essential 8 has 8 components: diet, physical activity, exposure to nicotine, sleep, body mass index (BMI), blood lipids, blood glucose, and blood pressure. Each component is scored with an algorithm and scores range from 0 to 100. A composite score of overall cardiovascular health can be generated and it also ranges from 0 to 100. A score of 0 indicates a low health score, a score of 50 indicates moderate health, and a score of 100 is the highest health for each of the 8 components as well as the overall score.

The hemoglobin A1c test result reflects average blood sugar level over the past three months. Specifically, the A1c test measures what percentage of hemoglobin is coated with sugar (glycated). Values below 5.7% are normal, values between 5.7% and 6.4% indicate prediabetes, and values of 6.5% and higher indicate diabetes. Dried blood spots (DBS) were collected for assessing HbA1c at Baseline and Month 6 per protocol.

Adiponectin is a hormone released by adipose tissue, and other body tissues, that assists with insulin sensitivity and reducing inflammation. Normal ranges vary depending on sex and BMI and in general lower levels are associated with health conditions of obesity, Type 2 diabetes, and atherosclerosis. In people with a BMI of less than 25, the normal range for males and females is 5 to 37 micrograms per milliliter (µg/mL). In those with a BMI of 25 to 30 the normal range for males is 5 to 28 µg/mL and the normal range for females is 4 to 20 µg/mL. In people with a BMI over 30 the normal range for males is 2 to 20 µg/mL and the normal range for females is 4 to 22 µg/mL.

Cholesterol is waxy substance which is produced by the liver or comes from food that is consumed. Cholesterol concentrations are commonly used as a marker for cardiovascular disease risk. Healthy levels of total cholesterol are 125 to 200 milligrams (mg) per deciliter (dL). Dried blood spot (DBS) samples for total cholesterol were collected from participants per protocol at Baseline and Month 6.

Dried blood spot (DBS) samples for LDL cholesterol were collected from participants per protocol at Baseline and Month 6. Healthy levels of LDL cholesterol are below 100mg/dL.

HDL cholesterol is the "good" cholesterol because it is a type of fat that removes cholesterol from blood, thereby preventing build up. Healthy levels for HDL cholesterol are 40mg/dL or higher in adult males and 50 mg/dL or higher in adult females. Dried blood spot (DBS) samples for HDL cholesterol were collected from participants per protocol at Baseline and Month 6.