Hear from the Endurance Lab team about how these services can enhance your training and help you achieve your fitness goals.

Kaiser Permanente Endurance Lab

Welcome to our Sports Medicine Center and Endurance Lab located in Golden 1 Center, home of the Sacramento Kings. Here, our comprehensive sports medicine care is complemented by our specialized Endurance Lab, where we use advanced physiological testing and biomechanical assessments to help athletes reach their fitness goals. Whether you are training for your next triathlon, aspire to be a professional athlete, or are a recreational fitness enthusiast, our program will help produce winning results with state-of-the-art equipment and science-based programs available to members and non-members.1

Our Staff

Our Endurance Lab is led by Dr. Jason Brayley and Susan Joy, Co-directors of the Kaiser Permanente Sports Medicine Center, and Julie Young, an elite athlete.

  • Jason Brayley, MD

    Medical Director, Sports Medicine and Athletic Performance, Chief of Sports Medicine, Greater Sacramento, Co-Director Sports Medicine Center

    Jason Brayley, MD, earned his medical degree from Loma Linda University and completed his fellowship in sports medicine at the Cleveland Clinic Foundation. He has served as a team physician for multiple high school and collegiate teams, including seven years as a team physician in professional cycling. He is board certified in Family Medicine and Sports Medicine. Dr. Brayley is a team physician for the Sacramento Kings.

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  • Susan Joy, MD

    Co-Director, Kaiser Permanente Sports Medicine Center

    Susan Joy, MD, attended the University of Connecticut School of Medicine after she graduated from Amherst College. She received her specialty training in primary care sports medicine at Cleveland Clinic. Dr. Joy is board certified in Family Medicine and holds a Certificate of Added Qualification in Sports Medicine. She has served as a team physician at the high school, collegiate Division I and III, and professional level.

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  • Julie Young, MS

    Sports Science Specialist

    Julie Young is a former US National team and world tour pro cyclist. Through her extensive race career at the elite international level, Julie Young brings firsthand knowledge of science-based, individualized training programs combined with nutrition, mental conditioning and race tactics to produce winning results.

    Julie is considered one of America’s most dominant European stage racers of her era as a 12-year US and World Tour Pro Cyclist, a US National A-Team Cyclist, and 6-time UCI Road World Championship Team Cyclist. Currently, she is focused on cyclocross and mountain bike events. Her recent accomplishments have been on her single speed mountain bike: placing first overall in the pro/amateur division of the Tahoe Trails race, 1st overall amateur Carson Epic, and winning the women’s division and placing 6th overall in the Pro category at the Leadville 100.

    Her expertise gained while working with the sport’s most prominent physiologists and coaches provides a solid background in a variety of training methodologies. Julie has a Master of Science degree in Sports Science and Human Performance. She is also a certified Specialized Body Geometry Bike Fit Technician, and a certified Medicine of Cycling Bike Fitter. She studied and mentored at Exos Training Center, formerly Athletes’ Performance, and completed a six-month fellowship in Advanced Functional Biomechanics of the Lower Quarter with Dr. Chris Powers at the USC-affiliated Movement Performance Institute.

    Julie is a graduate of UCLA, where she earned status as a NCAA Academic All-American.

    As one client shared “I’m achieving things that I’ve never done before. Julie helps me see my potential.”

The Endurance Lab is an integral part of my training as a professional cyclist. The comprehensive testing and assessments are key to understanding body dynamics and efficiency, and how I need to train to reach the highest levels in my sport.

Caroline Nolan

Endurance Lab client

Large modern reception area with blond wood floors and large lit up artwork of an athlete jumping with the word Thrive behind the desk
Rehabilitation open space and equipment room has images of athletes and TVs hanging from the ceiling; exercise machines, weights, mats and balls along the walls; and artificial turf running through the center
State-of-the-art digital radiography room
Rehabilitation space with 74-foot long sprint lane running through the center of the room and Kaiser Permanente branded exercise machines in the foreground

Golden 1 Center

Our flagship facility at Golden 1 Center includes a 7,000-square-foot gym, on-site imaging, nine physical therapy rooms, sport-specific rehabilitation with simulated environments, and our Endurance Lab.

Our Services

We offer a selection of competitively priced services as a part of our broad fitness assessments.

Performance Metabolic Efficiency Assessment

Metabolic efficiency measures how well your body utilizes its fat stores as an energy source during exercise. Burning fat as fuel can be significantly improved by phasing nutrition with training. As an endurance athlete, ingesting as many calories as you are expending is impossible. The key is to improve your ability to effectively tap fat stores for fuel, and push utilization of this energy source out at increasing intensities. This can benefit every endurance athlete from road cyclists and trail runners to triathletes.

This test will inform you of:

  • Caloric expenditure at various heart rates, and pace or watts
  • Peak fat burning zone based on heart rate, and pace or watts
  • Lactate levels for your various metabolic zones
  • Methods to increase fat utilization and preserve carbohydrate stores, decreasing the amount of fuel replenishment required
  • Phasing nutrition with training to maximize fitness results

Our Pricing

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Service Price
Performance Metabolic Efficiency Assessment $ 290.00
Lifestyle Metabolic Assessment $ 200.00
Resting Metabolic Rate Assessment $ 175.00
Vo2 Max Testing $ 175.00
Lactate Testing $ 175.00
Motion Capture Gait Analysis $ 275.00
2D Motion Capture Bike Fit – Road / Mountain Bikes $ 275.00
2D Motion Capture Bike Fit – Time-Trial Bikes $ 300.00
3D Motion Capture Bike Fit – Road / Mountain Bikes $ 350.00
3D Motion Capture Bike Fit – Time-Trial Bikes $ 400.00
**Prices are subject to change. Please call (916) 326-8217 or email SMC-Endurance-Lab@kp.org.

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  1. 1 Services and products described here are provided on a fee-for-service basis. These services and products are not provided or covered by Kaiser Foundation Health Plan, Inc. (Health Plan), and you are financially responsible to pay for them. Clinical services are provided by providers or contractors of The Permanente Medical Group, Inc. Results of services may vary among patients and cannot be guaranteed. Health Plan and Kaiser Foundation Hospitals may receive compensation for providing facilities and/or other support in connection with these services. These services are not meant to replace any covered services under your health plan benefits. If you are a Kaiser Permanente member, please check your Evidence of Coverage for specific covered health plan benefit information.