200 Participants NeededMy employer runs this trial

Lower Body Pressure for Athlete's Heart

(TULiP Trial)

DP
Overseen ByDesi P Fuhr, MSc
Age: 18 - 65
Sex: Any
Trial Phase: Academic
Sponsor: University of Alberta
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial explores how the heart and lungs of highly trained athletes respond to changes in blood flow compared to less fit individuals. Researchers will test this by applying lower body positive and negative pressure (air pressure around the legs) to alter the blood returning to the heart, similar to the effect of standing up. The goal is to understand how fitness levels influence lung and heart responses. Individuals who exercise regularly and do not have chronic diseases like asthma or heart issues may be suitable candidates for this trial. As an unphased study, this trial provides a unique opportunity to advance scientific understanding of cardiovascular health in athletes.

What prior data suggests that this method is safe for athletes?

Research on treatments using lower body pressure shows they are generally safe for people. Early results suggest this method can alter blood flow and heart rate without major risks. The treatment applies air pressure to the legs, like a gentle vacuum, and is usually well-tolerated.

One study used this technique to change blood flow to the heart and found it safe, with no significant side effects. It primarily affected heart rate and blood distribution, which are normal body responses. This method resembles natural changes in the body, such as moving from lying down to standing up.

Overall, the treatment is designed to be low-risk, as it mimics common body movements. Existing studies support its safety concerning blood flow and heart function.12345

Why are researchers excited about this trial?

Researchers are excited about the use of lower body positive and negative pressure for managing athlete's heart because it offers a non-invasive approach to addressing cardiovascular health. Unlike standard treatments that might focus on medications or lifestyle changes, this method uses changes in air pressure around the lower body to influence heart function and circulation. This unique mechanism could provide a new way to support heart health in athletes, potentially improving performance and recovery without the need for drugs or surgery.

What evidence suggests that lower body pressure is effective for athlete's heart?

Research has shown that applying pressure to the lower body can influence how blood returns to the heart. This method mimics the body's response when transitioning from lying down to standing. Studies have found that athletes' hearts possess unique features, such as larger and more efficient chambers, which enhance endurance. These features might also impact how blood vessels in the lungs respond to changes in blood flow. By applying pressure around the legs, the trial aims to explore these changes and gain a better understanding of heart function. Early findings suggest this approach could help explain why athletes' hearts react differently compared to non-athletes.678910

Who Is on the Research Team?

MK

Michael K Stickland, PhD

Principal Investigator

University of Alberta

Are You a Good Fit for This Trial?

This trial is for healthy adults, both athletes with regular endurance training and people who do not exercise regularly. Participants should have no major health problems affecting the heart or lungs.

Inclusion Criteria

I am between 18 and 40 years old.

Exclusion Criteria

I am pregnant and not using birth control.
Severe obesity (body mass index >35 kg/m2)
Self-reported blood donation or transfusion in the past 60 days due to potential impact on study findings
See 4 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

1 day
1 visit (in-person)

Central Blood Volume Manipulation and DLCO

Participants perform DLCO tests at various levels of lower body positive and negative pressure and head tilt.

1 day
1 visit (in-person)

DLCO with Exercise

Participants perform DLCO maneuvers during exercise at varying intensities to increase central blood volume.

1 day
1 visit (in-person)

Ultrasound with LBNP/HUT, LBPP/HDT, and Exercise

Participants undergo echocardiography and carbon monoxide rebreathe protocol during interventions.

1 day
1 visit (in-person)

Computed Tomography

Participants undergo a CT scan to assess pulmonary vascular and airway structure.

1 day
1 visit (in-person)

Follow-up

Participants are monitored for safety and effectiveness after interventions.

4 weeks

What Are the Treatments Tested in This Trial?

Interventions

  • Lower body positive and negative pressure

Trial Overview

The study compares how trained (athletic) and untrained individuals' lung blood vessels respond to changes in leg air pressure, which alters blood flow back to the heart. Air pressure is applied around the legs using a special device.

How Is the Trial Designed?

1

Treatment groups

Experimental Treatment

Group I: All participantsExperimental Treatment1 Intervention

Find a Clinic Near You

Who Is Running the Clinical Trial?

University of Alberta

Lead Sponsor

Trials
957
Recruited
437,000+

Citations

Case Reports of the Athletic Heart

His blood pressure in clinic is 121/60 mmHg, BMI 25.7 kg/m2, with no abnormalities on physical exam. Labs show a total cholesterol of 244 mg/dL, HDL 91 mg/dL, ...

Cardiac Adaptation in Performance Athletes: A Systematic ...

Electrical modulation in the athletic heart induces neurological modifications leading to sinus arrhythmia, bradycardia, early repolarisation, ...

Athletic Heart Syndrome: What It Is, Symptoms and ...

Learn about athletic heart syndrome (AHS) and its impact on athletes' heart health. Understand the symptoms, risks, and diagnostic tests for ...

(PDF) Differentiation between athlete's heart and dilated ...

Combining these parameters to define a 'normal' test reduces the false negatives to 5 (14.2%) with only 2 (8%) false positive results.

The Athlete and the Heart

The athlete's heart may demonstrate four-chamber enlargement and mild left ventricular hypertrophy, but normal diastolic function and B- ...

Level of Athlete's Health and Blood Pressure Variability

Table 1 shows the average data of the analysis of measurements of the parameters of the body structure of athletes of the studied groups. Table ...

Study: Young athletes at risk for elevated blood pressure ...

Young athletes who participated in multiple sports displayed the highest rates of HTN with a 28.3% prevalence, closely followed by basketball ...

Athletic Heart Syndrome

Physiological changes that occur with training include lowered blood pressure and heart rate, enhanced contraction and relaxation of both ...

Effect of Lower Body Negative Pressure on Phase I ... - IRIS

We used lower body negative pressure (LBNP) to increase blood distribution to the heart by muscle pump action and reduce resting vagal activity.

DIAGNOSTIC OF THE ATHLETE'S HEART AND FACTORS ...

On the other hand, among people intensively involved in sports, the risk of sudden death is 2 times higher than in the general population. The most common ...