Do you want a Personal Trainer to come to your home or office gym?

Who We Are

We Bring Concierge Personal Training to Your Home or Office.

Personal Training

We design programs tailored to meet the goals of you and your lifestyle. Using our backgrounds as doctors of physical therapy, we help people transform their physiques, all while maximizing long-term health, injury and disease risk.

Anywhere

in the Boston area.

Get Personal Training For:

  • At ONYX, we focus on optimizing body composition by addressing both fat percentage and total muscle mass. Our tailored programs combine evidence-based exercise regimens, nutritional guidance, and lifestyle modifications to create a comprehensive approach to wellness and performance. We utilize assessments to establish baseline metrics and monitor progress, ensuring each individual receives personalized strategies that promote fat loss while encouraging muscle growth. Our emphasis on sustainable practices fosters long-term results, contributing to enhanced overall health and longevity. Each step is designed to empower individuals in achieving their specific body composition goals.

  • At ONYX Physical Therapy, we focus on enhancing cardiorespiratory endurance through targeted training that optimizes VO2max, the maximum amount of oxygen your body can utilize during intense exercise. VO2max is a critical indicator of aerobic fitness and plays a significant role in overall health. Higher levels of VO2max are associated with increased longevity and a prolonged healthspan, meaning individuals can maintain their vitality and functional capacity for longer periods.

    Research shows that improved VO2max can lower the risk of chronic diseases, such as heart disease, diabetes, and metabolic syndromes, by promoting better cardiovascular health and efficient metabolic functioning. By incorporating tailored exercise programs that challenge and elevate your cardiorespiratory system, we aim to help you achieve higher VO2max levels, ultimately leading to enhanced well-being and a reduced risk of disease.

  • At ONYX Physical Therapy, we recognize that strength is a vital predictor of longevity and overall health. Our specialized programs are designed to enhance your strength based on your personal goals and areas of focus. Whether you're aiming to develop upper body power, core stability, or lower body endurance, our tailored approach ensures that you receive the targeted training necessary for optimal results. By improving your strength, you not only enhance your physical performance but also work towards reducing the risk of age-related decline and mortality. Invest in your health today and build a foundation for a longer, stronger future.

  • At ONYX Physical Therapy, we understand that every sport and activity presents unique challenges and demands. Our tailored approach focuses on enhancing your performance while minimizing injury risk specific to your chosen discipline. Through personalized assessments and specialized training programs, we address the physical requirements of various sports, integrating strength, flexibility, and endurance strategies. Our expert team employs evidence-based techniques to optimize your movement patterns and build resilience against injuries, ensuring you can perform at your best safely. Whether you're an athlete or a recreational participant, we are committed to supporting your journey to peak performance.

  • At ONYX Physical Therapy, we understand that flexibility and mobility are essential components of overall health and performance. Our specialized programs focus on tailored assessments and targeted exercises designed to improve range of motion, reduce stiffness, and enhance physical functionality. By incorporating techniques such as dynamic stretching, myofascial release, and controlled movements, we empower individuals to unlock their body's potential. Whether you're an athlete aiming for peak performance or someone seeking to maintain an active lifestyle, our expert guidance and innovative approach ensure that you achieve greater flexibility and mobility safely and effectively. Experience the difference with ONYX and move freely in every aspect of your life.

  • At ONYX, our exercise and personal training services are designed to promote longevity and enhance overall well-being. We understand that maintaining a healthy lifestyle is a lifelong commitment, and we tailor our fitness programs to meet the unique needs of each individual.

    Our approach combines strength training, cardiovascular conditioning, and flexibility exercises, all carefully selected to improve functional movement, bone density, and cardiovascular health. Through our personalized training sessions, clients receive one-on-one attention from experienced trainers who focus on form, technique, and progression, ensuring that every workout is effective and safe.

    We emphasize the importance of consistency and building sustainable habits. Our trainers work closely with clients to establish realistic goals, monitor progress, and make necessary adjustments to keep motivation high and results on track. In addition to physical training, we incorporate lifestyle guidance, nutrition advice, and stress management techniques, understanding that longevity is affected by multiple factors beyond just exercise.

Why choose ONYX for Personal Training?

We Teach At Local Universities and Health Science Schools

Choosing a combined physical therapist and personal trainer who teaches at a Doctor of Physical Therapy (DPT) school ensures you're receiving care from someone at the forefront of the field. We instruct at Massachusetts General Hospital Institute of Health Professions, and Northeastern University Bouvé College of Health Sciences. Our role in educating future clinicians reflects a deep understanding of best practices and a commitment to high standards of care. This expertise can lead to more precise assessments, innovative treatment strategies, and better long-term outcomes for patients.

We Specialize in Orthopedics and Sports

Selecting a physical therapist who has completed a residency ensures specialized expertise in preventing injury and maximizing performance. Our residency-trained therapists underwent advanced training in orthopedics, working with surgeons directly. They have a deep understanding of the human body allowing for more precise and effective treatment, while lowering risk for complications.

We are Strength and Conditioning Coaches

Choosing a physical therapist who is also a Certified Strength and Conditioning Specialist (CSCS) ensures a unique blend of rehabilitation and strength training expertise. This dual qualification allows the therapist to not only address injuries but also design programs that enhance overall physical performance. They understand how to safely progress clients from rehabilitation to peak function, bridging the gap between recovery and higher level activity. This approach is especially valuable for active individuals seeking to return to sport stronger and more resilient.

Owner and Lead Therapist

Dr. Kyle Mahoney, PT, DPT

Education

Sports Physical Therapy Residency - University of Southern California

Doctor of Physical Therapy - University of St. Augustine for Health Sciences

BS, Exercise Science - University of Connecticut

Academic Appointments

Adjunct Faculty - Northeastern University

Lab Instructor - Massachusetts General Hospital Institute of Health Professions

Doctor of Physical Therapy

Certified Strength and Conditioning Specialist

  • Kyle Mahoney is a Sports Residency Trained Doctor of Physical Therapy and Certified Strength and Conditioning Specialist. He is an Adjunct Professor of Physical Therapy at Northeastern University and Lab Instructor Massachusetts General Hospital Institute of Health Professions. In addition, Kyle serves as an advisor to Meloq, a return to sport device company that creates state of the art of force dynamometers and force plates. His Sports Physical Therapy Residency was completed at the University of Southern California, where he worked with the Los Angeles Angels of Anaheim, and acted as a Lead Strength Coach and Physical Therapist for East Los Angeles College. In addition, he served as the lead physical therapist for the 2019 United States World University Games team. Prior experiences also include internships at Andrews Sports Medicine in Birmingham, Alabama, and EXOS in Phoenix, Arizona, where hundreds of professional athletes in the NFL, NHL, MLB, and NBA receive sports medicine care. Kyle was a strength and conditioning coach intern from 2011-2015 for the Connecticut Huskies, including the National Champion Men’s Basketball program in 2014.

    Former Teams and Organizations

    • University of Connecticut Huskies: Men’s and Women’s Basketball, Men’s and Women’s Tennis, Volleyball, Men’s and Women’s Soccer

    • University of Southern California: Club Sports Teams, Kauffman School of Dance

    • University of California Los Angeles (UCLA) Bruins: Men’s and Women’s Tennis

    • East Los Angeles College: Men’s Football, Men’s Basketball

    • United States World University Games: Track and Field, Tennis, Rhythmic Gymnastics, Water Polo, Judo, Swimming and Diving

Get Concierge Personal Training in Your Home or Office, Now:

You won't find a more knowledgeable, dedicated, passionate and trustworthy PT than Kyle. I am a professional triathlete who specializes in long course racing. Kyle is the reason I am now back to racing, pain free, and stronger than ever. He not only saw me for in-person sessions, but also created weekly rehab and strength programs, working closely with my triathlon coach to be sure it was aligned with my swim, bike and run training. I cannot recommend Kyle enough.”

Alice Alberts, Professional Triathelete

We teach others in the world of sports and orthopedics.

What people say about ONYX…

“I have been working with Kyle for a year doing strength training and it’s completely changed my life.” - Kara Rainey

Get Concierge Personal Training in Your Home or Office, Now:

Testimonials

“As a healthcare professional myself I appreciated your approach. The good results I am seeing is a direct result of your guidance and inspiration you give me. ”

Matthew Pernick, Pharmacist

“I highly recommend Kyle as not only an excellent source of recovery, but as a person with honesty and integrity. You can trust his advice and council 100%.”

Danny Caverly, PGA Director of Instruction

“Kyle brings a unique skill set of physical therapy and sports training, which has finally gotten me on the right track. Perhaps even more significant, is his personality and caring approach to his craft. Kyle is an excellent listener who truly cares about his patients. He's a wonderful person, who I am very thankful to know. I highly recommend him!”

Michael Pierce, Lawyer

“He was professional, punctual, thorough and overall just an amazing therapist. Definitely recommend for anyone looking for optimal results!!”

Jenn Gilmartin, World Beauty Fitness and Fashion Pro

“After years of battling bilateral knee issues and undergoing six surgeries—including a tibial tubercle osteotomy I never fully recovered from—I began working with Kyle at my lowest point. In just six weeks, he has completely transformed my outlook and capabilities. Kyle is an incredible listener, highly intentional, and technically skilled, tailoring every session to my specific needs. His thorough assessments and continuous adjustments to my program have been nothing short of excellent. I feel stronger than I have in years (both physically and mentally). I can't recommend him enough and I’ve worked with over a dozen physical therapists. He’s the best one.”

Abigail DeLaney, Director of Operations and Talent Aquisition