ACE Experts

ACE content is derived from the diverse expertise we have on our team. Professionals from healthcare, fitness, nutrition, behavior change, exercise science, education and workplace wellness lend their expertise to help us create articles and videos aimed at helping you best serve the people who come to you for guidance.


Jason R. Karp, Ph.D.

Jason R. Karp, Ph.D.

Jason Karp, Ph.D., is the 2011 IDEA Personal Trainer of the Year, 2014 recipient of the President’s Council on Fitness, Sports & Nutrition Community Leadership award, and creator of the REVO2LUTION RUNNING™ certification. He has authored more than 400 published articles in international running, coaching and fitness magazines, is the author of eight books, including 14-Minute Metabolic Workouts and Run Your Fat Off, and speaks at fitness conferences and coaching clinics around the world.

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Wendy Sweet, Ph.D.

Wendy Sweet, Ph.D.

Wendy Sweet, Ph.D., is a 30-year veteran of the personal-training industry in New Zealand. She is well known for her contributions to personal trainer education throughout Australia and New Zealand and was the recipient of the Australian Fitness Educator of the Year Award in 2015. She recently completed her doctorate degree, which focused on women who are transitioning through menopause and their experiences in the context of exercise and nutrition advice from health and fitness professionals. From this research, she has developed specific lifestyle-change programs to help women transition through menopause naturally without the need for hormonal therapies. You can find more information about her work at www.mymenopausetransformation.com.

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Michael J. Norwood, Ph.D.

Michael J. Norwood, Ph.D.

Dr. Michael J. Norwood is both a performance psychology consultant and a fitness expert. He has been researching and consulting in the area of human performance since 1994. He earned his doctorate degree in performance psychology with major areas of emphasis in exercise physiology and counseling psychology from the University of Kansas, where he also served as the Director of the Peak Performance Clinic. Dr. Norwood was later instrumental in co-developing a comprehensive curriculum for personal trainers and massage therapists at the Professional Fitness Institute, where he served as the Director of Education. He launched his optimal performance consulting practice and has inspired and encouraged a long list of students, athletes of various sports and levels, Fortune 500 executives, entertainers, business owners and busy families in the areas of functional health, fitness and personal mastery. Dr. Norwood lives in San Diego, Calif., where he’s currently working on bringing his philosophy and teaching methodologies of optimizing human performance online.

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Brian Tabor

Brian Tabor

Brian Tabor, CEO of Strong Made Simple, is a personal trainer, author, speaker, ACE Certified Health Coach and National Champion Strongman competitor. Having earned his M.S. in Exercise Physiology from San Diego State University, he creates easy to follow fitness solutions empowering people and their communities to be stronger.

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Dr. Marty Miller

Dr. Marty Miller

Marty Miller is the Director of Education and Training for Technogym USA. Who has more than 20 years experience in sports medicine, performance enhancement and injury prevention. His academic credentials include a BS in Sports Medicine and Physical Education from Canisius College (NY) and a MS in Exercise Science & Injury Prevention from California University of Pennsylvania, and received his Doctorate in Health Sciences from AT Still University in Mesa, AZ. Marty is a Certified Athletic Trainer (ATC) with the National Athletic Trainers' Association (NATA), a Performance Enhancement Specialist (PES), Corrective Exercise Specialist (CES), and a Mixed Martial Arts Conditioning Specialist (MMASCS). 

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Jan Schroeder, Ph.D

Jan Schroeder, Ph.D

Jan Schroeder, PhD, is the Chair of the Department of Kinesiology at Long Beach State University, where she teaches applied exercise physiology. She has written 60+ articles on exercise physiology/fitness. She is also a certified group exercise instructor who teaches weekly in the private sector.  

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Debra Wein

Debra Wein

Debra Wein, CEO and founder of Wellness Workdays, is a nationally recognized expert on health and wellness and speaks regularly on worksite wellness topics. She designs corporate wellness programs for organizations across the country, including New Balance, EMD Serono, Cape Cod Healthcare, Putnam Investments, and Brown University. Debra holds undergraduate and graduate degrees from Cornell and Columbia Universities.

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Meg Root

Meg Root

Meg Root, M.S. is an ACE Certified Health Coach and Medical Exercise Specialist. She holds a Master’s Degree in Kinesiology with a focus in Integrative Wellness from Point Loma Nazarene University, and works as a Health Coach for Wellness Coaches USA in addition to writing regularly for ACE, IDEA Fitness Journal and other publications. Meg has worked in the destination spa and wellness industry for over 25 years and specializes in taking a positive, feel-good approach to helping people adopt and maintain healthier lifestyles.

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Cassandra Padgett

Cassandra Padgett

Cassandra Padgett is an ACE Certified Health Coach and a PN1 Nutrition Coach. She has experience coaching in corporate wellness and health insurance settings and is currently a clinical health coach and senior health cducator for a childhood obesity prevention program in San Diego, Calif. Cassandra is passionate about helping families optimize health through simple nutrition changes and mindful eating. She holds a master’s degree in health promotion and education from the University of Utah, and a bachelor’s degree in public health from Brigham Young University. 

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Graham Melstrand

Graham Melstrand

Graham Melstrand develops opportunities and relationships that advance ACE health policy positions and fitness industry standards. He assesses legislative positions at all levels of government that align with the ACE mission, and he monitors existing and emerging legislation and regulatory policy, informing ACE of the potential impact they have on the exercise professional, the public, and other stakeholders. He creates relationships with key policymakers and collaborative organizations and serves in an advisory capacity on a number of boards and committees including: past-president of the board for the Coalition for the Registration of Exercise Professionals (CREP), within the Commission on Accreditation of Allied Health Education Programs (CAAHEP), he sits on the Committee on Accreditation for the Exercise Sciences (COAES) and on the Facility Certification Committee of the Medical Fitness Association (MFA). Melstrand holds a bachelor's degree in physical education/athletic training from California State University, Long Beach. As a competitive cyclist, he participated in the U.S. Olympic Trials (1984, 1988) and was a member of the U.S. National Team Development Program (1983 - 1990).

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Margarita Cozzan

Margarita Cozzan

Margarita Cozzan, M.S., a Registered Dietitian since 2009, has a Master of Science degree in Nutrition and has been an ACE Certified Personal Trainer since 2006. With more than 15 years of experience in coaching and supporting lifestyle change, Margarita has supported clients in variety of settings including an outpatient bariatric surgery clinic, skilled nursing and rehabilitation facilities, doctors’ offices, spas, and gyms.

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Christin Everson

Christin Everson

Christin Everson is an ACE Certified Health Coach, Group Fitness Instructor, Personal Trainer as well as a Behavior Change Specialist. She holds a Master’s degree in Kinesiology from Indiana University and a Bachelor’s degree in Psychology from the University of Oregon. Christin has 10 years of experience running successful fitness programs and currently works for Seattle University as an Assistant Director for University Recreation as well as an Adjunct Professor for the Kinesiology department. Christin is passionate about socially-just and inclusive fitness programming.

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Nancy Clark

Nancy Clark

Sports nutritionist Nancy Clark, MS, RD counsels both casual and competitive athletes at her private practice in the Boston area. Her best-selling Sports Nutrition Guidebook is available starting August 2019 in its new sixth edition at www.nancyclarkrd.com. For online education, see www.NutritionSportsExerciseCEUs.com.

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Rebekah Rotstein

Rebekah Rotstein

Buff Bones® creator Rebekah Rotstein, PMA®-CPT is a movement educator and certified Pilates instructor who presents at conferences, resorts and symposia around the world on topics of bone health, anatomy and movement. Visit her online at www.buff-bones.com.

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Rebekah Rotstein

Rebekah Rotstein

Buff Bones® creator Rebekah Rotstein, PMA®-CPT is a movement educator and certified Pilates instructor who presents at conferences, resorts and symposia around the world on topics of bone health, anatomy and movement. Visit her online at www.buff-bones.com. 

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Vicki Hatch-Moen and Autumn Skeel

Vicki Hatch-Moen and Autumn Skeel

Vicki Hatch-Moen and Autumn Skeel, co-founders of Total Body Tabata, have developed a fitness program that has become a turning point in their lives. Autumn’s nursing degree and Vicki’s Kinesiology & Dance degrees laid the ground work for their health and fitness careers.  With a combined 40 years’ experience teaching group fitness classes, Autumn and Vicki created Total Body Tabata with the exerciser as their focus. By using exercise science woven into a recipe that fitness instructors can deliver with fun, variety and safety, everyone works at their peak effort and gets fitter faster. It’s a “never-get-bored” workout for both the exerciser and instructor. Vicki Hatch-Moen: ACE, AFAA & NASM Provider, Balletone™ Master Trainer, ACE Group Fitness Instructor, ACE Personal Trainer, Lesmills BODYSTEP™ & BODYPUMP™ Instructor, efisportsmedicine GRAVITY(totalgym) Trainer, TRX™ Suspension Trainer, Barre Above™ Instructor & Owner of Tailor Made Training.   Autumn Skeel: ACE, AFAA & NASM Provider, ACE group fitness, Barre Above™ and Schwinn cycle certified.  

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Shane Kinkennon

Shane Kinkennon

As Chief Operating Officer (COO), Shane Kinkennon is responsible for ACE’s strategic and operating planning, operations management, human capital management, leadership development, and adherence to rigorous business-management practices. Kinkennon oversees the organization’s operations function as well as its issue advocacy, communications, public affairs, community engagement, and other areas of work. Hired as ACE Chief Strategy Officer in June 2017, Kinkennon became COO in July 2018. Before joining ACE, he served as project lead for the ACE-funded Prescription for Activity (PfA) Task Force—a national group of business, academic, philanthropic, and government experts spanning preventive-care, disease prevention, care delivery, public health, and fitness. 

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Shannon Fable

Shannon Fable

Shannon Fable, 2013 IDEA and 2006 ACE Instructor of the Year, is the Executive Vice President of Learning & Product Development for the FIT4MOM® franchise. For more than two decades, she has helped impressive brands such as Anytime Fitness, Schwinn®, Power Systems, ACE, Silver Sneakers, and BOSU® as a fitness business and programming consultant.  An experienced educator, freelance writer, and certified Book Yourself Solid® Business Coach, she helps fitness entrepreneurs navigate the industry and make more money.  Fable serves as Chair of the ACE Board of Directors and is the founder and co-owner of GroupEx PRO®, a cloud-based group fitness management tool.

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Jonathan Ross

Jonathan Ross

His “800 Pounds of Parents” directly inspired Jonathan’s prolific fitness career.  He is a multiple Personal Trainer of the Year Award-Winner (ACE, IDEA, and PFP Magazine), creator of Funtensity, brain fitness expert, blogger and master trainer for the American Council on Exercise (ACE). His book, Abs Revealed, delivers a modern, intelligent approach to abdominal training. A former astronomer, Jonathan used to study stellar bodies – now he builds them!

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Natalie Digate Muth

Natalie Digate Muth

Natalie Digate Muth, MD, MPH, RD, is the ACE senior consultant for healthcare solutions, a practicing pediatrician and registered dietitian. Recognized as a Certified Obesity Specialist, Natalie has written for more than 50 publications and, in 2012, published her first book, 'Eat Your Vegetables' and Other Mistakes Parents Make: Redefining How to Raise Healthy Eaters.

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Cedric X. Bryant

Cedric X. Bryant

As chief science officer for ACE, Cedric X. Bryant, Ph.D., FACSM, represents the organization as an international lecturer, writer and expert source. He has written more than 250 articles and columns for various publications, and he has written, co-written or edited 30 books. Dr. Bryant is an authoritative source on health and fitness for several media outlets including the Washington Post, The New York Times, Time magazine, and CNN. He also currently serves on numerous advisory boards including the Institute of Medicine Obesity Solutions Roundtable, the Osteoarthritis Action Alliance Physical Activity Workgroup, and the Medical Fitness Association's Certification Committee.

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Chris Freytag

Chris Freytag

Chris Freytag is an accomplished blogger, author, speaker, and the ACE senior consultant for health and fitness. A long-time ACE Certified Professional, she has been training and teaching fitness classes for over 20 years. Chris is the founder of GetHealthyU.com, a fast-growing digital publishing company within the healthy living space and is a contributing editor for Prevention Magazine. 

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Chris McGrath

Chris McGrath

Chris McGrath is the founder of Movement First, a New York City-based health and fitness education, consulting and training organization. With more than 20 years' of experience, Chris specializes in sports performance, injury prevention, post-rehabilitation and wellness coaching. An ACE senior consultant for personal training, he is a well-respected national presenter and adjunct professor at Long Island University in Brooklyn, NY.

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Nancey Tsai

Nancey Tsai

An assistant professor of neurosurgery at the Medical University of South Carolina, Dr. Nancey Tsai is a respected orthopedic surgeon who completed her residency at Stanford University. She emphasizes the importance of health coaching in the medical profession as a means for providers to better connect with patients.

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Todd Galati

Todd Galati

A long-time exercise professional, Todd Galati currently serves as senior director of allied health and exercise science for ACE. In addition to a master's degree in kinesiology, he holds a bachelor's in athletic training and all four NCCA-accredited ACE certifications. Throughout his many years of experience, Todd has served as a professor, program director, research physiologist, personal trainer and coach.

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Elizabeth Kovar

Elizabeth Kovar

Elizabeth Kovar, MA, has studied yoga in five different countries. Her master's thesis, "Creating Yoga Programs for People with Movement Disabilities," was implemented on a 12-week study for people with Stage 1-2 Parkinson's disease. Based in Seattle, she serves as fitness coordinator at a local recreation center.

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Gina Crome

Gina Crome

Gina Crome is a registered dietitian and ACE Certified Professional. Her career promoting healthy lifestyles developed after losing 172 pounds on her own. For 20 years, Gina's mission has focused on guiding individuals toward a better quality of life. She holds a master's degree in clinical psychology as well as a master's of public health in nutrition from Loma Linda University.

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Jessica Matthews

Jessica Matthews

Jessica Matthews, M.S., E-RYT500 is faculty in kinesiology and integrative wellness at Point Loma Nazarene University and professor of yoga studies at MiraCosta College, where she helps to grow and mentor the next generation of health and wellness professionals. A dynamic speaker, respected educator, fitness industry veteran and featured wellness expert, Jessica is a trusted and recognized go-to media resource, regularly contributing to numerous publications and outlines on topics ranging from fitness and yoga, to health coaching and career development. Additionally, she serves as ACE’s senior advisor for health and fitness education, and is the lead editor and author of the ACE Group Fitness Instructor Handbook: The Professional’s Guide to Creating Memorable Movement Experiences. You can connect with her at www.jessica-matthews.com, @fitexpertjess (Twitter and Instagram) and www.facebook.com/fitexpertjess.

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Lawrence Biscontini

Lawrence Biscontini

Lawrence Biscontini, MA, is an award-winning group fitness instructor recognized worldwide for his innovative programming. He was the first mindful movement specialist to win multiple awards from ACE, IDEA & Inner IDEA, Can Fit Pro and ECA. Lawrence has created nutritional menus for spas from Manhattan to Mykonos, and has appeared many times on national TV.

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Jacqueline Crockford

Jacqueline Crockford

Jacque Crockford, MS, CSCS, is an ACE Certified Personal Trainer and Exercise Physiology Content Manager at ACE. She has been a personal trainer and performance coach for over 14 years. Jacque grew up in the fitness industry, participating in YMCA sports and teaching gymnastics and swimming from a young age. She was on Kansas State University’s women’s rowing team, and she currently competes in triathlons throughout the country. Jacque has been featured in several publications, including LA Times, New York Post, Health, USA Triathlon, SHAPE and Women’s Health.

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Pete McCall

Pete McCall

Pete McCall, MS, CSCS, is an ACE Certified Personal Trainer and long-time player in the fitness industry. He has been featured as an expert in the Washington Post, The New York Times, Los Angeles Times, Runner's World and Self. He holds a master's degree in exercise science and health promotion, and several advanced certifications and specializations with NSCA and NASM.

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Shana Verstegen

Shana Verstegen

Shana Verstegen is a world champion lumberjack athlete, fitness competitor, gymnast and competitive runner. Based in Wisconsin, she serves as fitness director at Supreme Health and Fitness in Madison. Her success in log rolling and boom running has prompted appearances on ESPN, ABC Wide World of Sports and the Outdoor Life Network.

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Ted Vickey

Ted Vickey

Ted Vickey, MS, is the ACE senior consultant for emerging technologies and a long-time ACE Certified Personal Trainer. Referred to as "one of the most connected men in fitness," Vickey served as executive director of the White House Athletic Center under three presidents before starting FitWell Inc., a fitness management consulting company.

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Sabrena Jo

Sabrena Jo

Sabrena Jo, M.S., has been actively involved in the fitness industry since 1987. As a certified group fitness instructor, personal trainer, and health coach, she has taught group exercise and owned her own personal-training and health-coaching businesses. Jo is a former full-time faculty member in the Kinesiology and Physical Education Department at California State University, Long Beach. She has a bachelor's degree in exercise science as well as a master's degree in physical education/biomechanics from the University of Kansas. Jo is the Director of Science and Research Content for the American Council on Exercise (ACE) and a relentless pursuer of finding ways to help people start and stick with physical activity. Jo has a passion for the aerial arts and in her spare time enjoys hanging upside down from fabric and flinging her partner around in their acrobatic routines.

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Anthony Wall

Anthony Wall

As the Director of Strategic Partnerships for the American Council on Exercise (ACE), Anthony Wall, MS, oversees all ACE’s international strategy and ACE’s partnerships with organizations delivering education and professional development opportunities. He is also responsible for the quality control of all Continuing Education programs for the more than 67,000 ACE health and fitness professionals. Mr. Wall serves as a member of the Physical Activity Innovative Collaborative of the National Academies of Medicine and as Education Committee member for the Medical Fitness Association. He recently completed a 2-year term as a SPRI Education Advisor.

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Justin Price

Justin Price

A sought after pain relief expert, Justin Price specializes in biomechanics and correct exercise. He has been featured in Time magazine, Newsweek, The New York Times, the Wall Street Journal, WebMD, Discovery Health and numerous other publications. His techniques, culminated in The Biomechanics Method he created, are used in over 25 countries.

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Billie Frances

Billie Frances

A Board-certified Life Coach, Billie Frances, MA, serves as a licensed therapist and founder of California-based Guiding Mindful Change. A contributor to the ACE Behavior Change Specialty Certification and related texts, she offers valuable insight into behavior change and coaching strategies.

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Amanda Vogel

Amanda Vogel

Amanda Vogel, MA human kinetics, is a certified fitness instructor and the owner of fitnesswriter.com, a website that teaches fitness pros how to make money writing and blogging about health and fitness. Amanda is a Hootsuite-certified social media consultant for the fitness industry and a presenter at top conferences, including IDEA World and NASM Optima. In addition to blogging at FitnessTestDrive.com about fit tech, workout gear and exercise clothes, she writes for popular magazines, including IDEA Fitness Journal, Best Health and Reader’s Digest. Find her on Instagram at @amandavogelfitness.  

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