Effect of Ethnicity on Changes in VO2max and Cardiac Output in Response to Short-Term High Intensity Interval Training

California State University, San Marcos

Status: Completed

Conditions: Improved VO2max and Cardiac Output in Response to Training

Treatments: Other: High intensity interval training

Study type: Interventional

Funder types: Other

Identifiers

NCT04449016

1200680-2

Details and patient eligibility

About

The purpose of this study was to determine if ethnicity alters training responsiveness to a low dose of high intensity interval training in inactive women.

Full description

Prior to the session, women completed a 4-minute warmup at 10 % PPO. Each subject completed 9 sessions of HIIT over a 3-week period which consisted of eight to ten 1-minute bouts of cycling at 85% PPO with 75-second recovery between bouts at 10 % PPO. This protocol is well-tolerated in inactive individuals. Continuously during each session, heart rate was monitored using telemetry. On days 1, 3, 6, and 9 of training, the physical activity enjoyment scale (PACES) was completed. VO2max and cardiac output max were assessed prior to training, as well as post.

Enrollment: 22 patients

Sex: Female

Ages: 18 to 45 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Women
• Between the age of 18-45
• Healthy and non-obese (BMI < 30 kg/m2)
• Perform less than 150 minutes per week of exercise in the last 12 months
• 100% Caucasian or 100% Hispanic

Exclusion criteria

• Injured
• Obese
• Active
• Mixed ethnicity

Trial design

Primary purpose: Prevention

Allocation: Non-Randomized

Interventional model: Sequential Assignment

Masking: None (Open label)

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22 participants in 2 patient groups

Caucasian

Experimental group

Description:

Participants performed 9 sessions of HIIT over 3 weeks, utilizing progressive overload by increasing the number of bouts by 1 each week. They started with 8 bouts on week 1, 9 bouts on week 2, and 10 bouts on week 3.

Treatment:

Other: High intensity interval training

Hispanic

Experimental group

Description:

Participants performed 9 sessions of HIIT over 3 weeks, utilizing progressive overload by increasing the number of bouts by 1 each week. They started with 8 bouts on week 1, 9 bouts on week 2, and 10 bouts on week 3.

Treatment:

Other: High intensity interval training