PERFORMANCE & METABOLIC ASSESSMENTS
Hard science, big results
Service Description
Resting Metabolic Scan – RMR + Body Composition Find out how many calories you burn at rest, understand your specific caloric needs, and reveal potential metabolic dysfunctions that can be caused from poor nutritional strategies. With over 67% of endurance athletes are at risk of RED-S (relative energy deficiency in sport), this is a common issue that has health and performance repercussions. Pre‑test prep: (best done in morning) No food, caffeine, or alcohol 5 h prior; no smoking 2 h; no hard workouts 12 h. Results within 72 h (with findings, body composition, and 5 days meal plan and training ideas) ⸻ VO₂max Assessment This is the classic ramp test done the treadmill or bike trainer. We measure how much oxygen you can process from easy to full effort, then translate that into precise training and pacing zones. Not only It’s the single best way to confirm your aerobic ceiling and track long‑term fitness gains, your Vo2max is one of your best indicator for metabolic health. So test, train, and retest! Results in 24h. ⸻ Performance Recovery Profile (PRP) This test zeroes in on how fast you can hit red‑line power and bounce back to do it again—critical for HYROX, CrossFit, tactical road races, and short course races. After a few hard efforts we track VO₂, blood lactate, and muscle oxygen (SmO₂) during a defined recovery window. For competitive athletes, the ability surge can be the difference between 1st and 5th in a race, and knowing where your limiters are, and how resilient you are to these surge can results in smarter race decisions. Result in 72h. ⸻ 3‑Minute All‑Out (DARK) Test Three minutes blindfolded at absolute max effort, no pacing strategy just full sprint. From that single effort we get Critical Power, anaerobic capacity (W′), and VO₂max. This is the fastest test I have, I am not going to lie, it is gruesome and painful - but in 180 seconds you get a lot of info. Results in 24h. ⸻ PRO Full‑Stack Profiling The most comprehensive one I can offer: this is a acyclic test with multiple muscle oxygen and hemoglobin monitoring, lactate testing, v02 profile and more. Not only you get spot on zoning, but also a comprehensive overview of your limiters, as well as running economy/cycling efficiency through the entire test. With this you and your coach have a clear road map on where are the best areas to develop as an athlete. Especially if paired with running or aero testing. Results in 72h/
Cancellation Policy
YOUSULI PERFORMANCE TESTING — WAIVER & INFORMED CONSENT Yousuli LLC ("Yousuli") offers physiological performance testing including VO2max and Training Zone (Zoning) assessments. These tests involve progressive increases in exercise intensity up to and including maximal effort. MEDICAL WARNING: These tests are NOT recommended if you have high blood pressure, known heart disease, history of cardiac events (heart attack, stroke, arrhythmia), chest pain at rest or during exercise, history of fainting or dizziness during exercise, uncontrolled respiratory conditions, recent surgery or injury limiting exercise, pregnancy, or any condition for which your physician has advised against vigorous exercise. If unsure, consult your physician before booking. Yousuli reserves the right to refuse testing to anyone presenting contraindications. ASSUMPTION OF RISK: By booking and participating, you acknowledge that maximal exercise testing carries inherent risks including abnormal heart rhythms, heart attack, stroke, fainting, nausea, muscle or joint injury, and in rare cases death. You voluntarily participate with full knowledge of these risks. You confirm you are in good health and capable of vigorous exercise to exhaustion, or have obtained physician clearance. You will immediately inform the administrator if you experience chest pain, severe shortness of breath, dizziness, or unusual symptoms. You may stop the test at any time. RELEASE OF LIABILITY: To the fullest extent permitted by law, you release and discharge Yousuli LLC, its owners, employees, agents, and affiliates from any liability, claims, or causes of action arising from your participation, including personal injury, illness, or death, except in cases of gross negligence or willful misconduct. This covers risks of maximal exercise testing, use of equipment, and any training recommendations based on results. PARTICIPANTS: Must be 18+. Under-18 requires written parental consent with guardian present. By participating you consent to photos/video during testing for Yousuli marketing unless you inform the administrator otherwise beforehand. By completing this booking you confirm you have read and understood this document, are not aware of any medical contraindication, and voluntarily accept the risks described above. Yousuli LLC maintains professional liability insurance. This is not medical advice. Performance tests are fitness assessments, not medical diagnostic procedures.
Contact Details
info@yousuli.co
Walnut, CA, USA