Welcome to D4.

We’re so happy you’re here.

  • Person smiling, wearing a suit jacket, outdoors.

    Alex Ladan, BS, MA

    Exercise Physiology & Sports Nutrition, Sports Scientist

    Alex’s passion for exercise science began years ago when she was competing as a rhythmic gymnast. She grew up in the Chicago suburbs and landed at the University of Illinois where she received her BS. in Kinesiology. While studying in the Integrative Gut Microbiota Lab at UIUC she found her passion for nutritional outcomes research. Her dream of working in the female health space came true during her Masters program at the UNC Chapel Hill where she studied female physiology, sports performance and nutrition in aging women. Alex has continued to engage in work to educate clients on the importance of exercise and nutrition for performance and recovery.

  • Smiling woman with long blonde hair and beige sweater against blue background.

    Dr. Jennifer Doyle, PT

    Physical Therapy, Founder

    Jenny’s vision for D4 is to provide a higher level of care within physical therapy, sports medicine and overall wellness. She graduated from Boston University in 2011 and spent the first 8 years of her career working at Boston Sports Medicine. She then moved to Pennsylvania to support her husband through his orthopedic surgery residency where she founded Rise Up Performance Therapy in 2017. Jenny also started working as a traveling physical therapist for USA Gymnastics in 2022. She now resides in Connecticut where she is building D4 Performance Labs with her two co-owners. Her specialty within physical therapy is working with and training high level athletes, specifically gymnasts, dancers, basketball players and weight lifters.

  • Becky Whooley

    Finance Administrator

    Becky is the friendly voice you will hear over the phone when you have questions about the details of our services and programs. She is also the head of our finance department and here to answer any questions about billing. Becky grew up playing soccer, basketball and track. She has huge love for music and is an incredible singer. She enjoys spending time with her family of four and cocker spaniel dogs. She enjoys traveling to Cape Cod and Vermont whenever she has the chance. She loves to hike, bike and go boating. She has become an integral part of D4 as her passion for helping people to work with our team and learn more about how to best fuel your body has been so important to her.

CONTACT US

Whether you’re curious about our services, need more details, or want to explore a partnership, we’re here to help.