Accredited Exercise Physiologists and health professionals who help people move better, feel good, and take part in everyday life — with objective data behind every recommendation.
Caitlin Hunt is Director of O2 Active Exercise Physiology and co-director of Eric Street Physio in Cottesloe. An Accredited Exercise Physiologist with over 25 years in allied health, Caitlin specialises in musculoskeletal rehabilitation, complex chronic conditions, oncology recovery, women's health and longevity. She works extensively with peri- and post-menopausal women and midlife men, with a particular focus on bone density and chronic disease management. Caitlin sits on the Master of Clinical Exercise Physiology advisory boards at UWA and Curtin, and is a member of the national Exercise Oncology Professionals Advisory Group convened at Edith Cowan University. She designed O2 Active's Phase 3 cardiac rehabilitation program, facilitates Cancer Council WA's Life Now program, and leads the clinic's regional Wheatbelt service. She is also co-founder and Clinical Director of Signal Health, our Longevity Care partner. She is a graduate of the Australian Clinical Entrepreneur Program (AUSCEP), the national clinician-led innovation program run by MTPConnect. She also holds qualifications in Pilates and yoga, and trained in classical ballet for 21 years. Every client begins with a comprehensive baseline assessment and objective outcome measurement, delivered through one-to-one, prescription-based sessions — giving referrers progress they can track.
Annika is a highly experienced Accredited Exercise Physiologist and second-in-charge at O2 Active Exercise Physiology. She holds a Bachelor of Science in Exercise and Sports Science and a Master of Clinical Exercise Physiology, and has extensive experience supporting people of all ages living with complex and chronic health conditions. Her clinical expertise spans neurological and cardiac rehabilitation, musculoskeletal conditions — particularly shoulder, knee and ankle rehabilitation — women's health, osteoporosis and healthy ageing, and she has a strong interest in working with neurodiverse children and adults, tailoring her approach to each person's individual needs, abilities and goals. Annika takes a holistic, evidence-based approach, combining strength training, Pilates-based rehabilitation and functional movement to build physical capacity, confidence, independence and long-term health. Known for her warm, compassionate nature, she prioritises genuine relationships with her clients and empowers them to make sustainable improvements to their health and quality of life.
Steve Selig (PhD, AEP, AES, ESSAF) sits on O2 Active's advisory board for our cardiac programme, and is involved in our programming day to day and in our most complex cases. A cardiac exercise physiologist and retired Chair in Clinical Exercise Science at Deakin University, Steve is one of the most senior figures in the field in Australia. He has served on the Board of Exercise & Sports Science Australia (ESSA) since 2005, led the national advisory groups that developed the professional standards for Accredited Exercise Physiologists, and is first author of ESSA's position statement on exercise training and chronic heart failure. His pioneering research on exercise for chronic heart failure has been cited in the American Heart Association's statement on exercise and heart failure, and in 2016 he was named among the top 25 influencers of exercise and sports science in Australia. For our clients, it means our cardiac program is built on — and overseen by — some of the deepest clinical expertise in the country.
Kelly brings over 17 years of experience in the fitness and wellness industry, with qualifications in Cert III & IV in Fitness and specialised training in Pilates, Yoga, Mindfulness Meditation, and Massage. She is passionate about the mind-body connection and supporting her clients' physical, mental, and emotional well-being. With a background in elite sport—representing Victoria in netball and softball—and 16 years in customer service with Qantas, Kelly combines movement expertise with exceptional people skills. She is known for creating meaningful, lasting connections with her clients.
Liam holds a Master's degree in Clinical Exercise Physiology and a Bachelor of Science in Exercise and Sports Science, alongside Certificates III and IV in Health and Fitness. He has a strong clinical interest in paediatrics and the management of cardiac, neurological, respiratory, musculoskeletal, and metabolic conditions. Liam uses evidence-based exercise prescription, clinical testing, and structured progression to support safe, measurable improvements. He is passionate about helping clients build confidence, improve physical and mental well-being, and achieve meaningful clinical and personal goals through programs tailored to their individual needs over time.
Ben holds a Master's degree in Clinical Exercise Physiology and a Bachelor of Science in Sport Science, Exercise and Health. His professional experience and interests include autoimmune disease management, oncology, healthy ageing, including osteoporosis and sarcopenia, rural health, and working with neurodiverse populations. Ben is passionate about ensuring each client feels heard, understood, and supported throughout their health journey. Using up-to-date research and a personalised approach, he develops sustainable, achievable programs tailored to each person's goals, helping clients build confidence, improve function, and make meaningful long-term changes to their health and well-being.
Riley brings over 8 years' experience in allied health to O2 Active, with a Master of Clinical Exercise Physiology (La Trobe University) and a Bachelor of Applied Science in Exercise and Sports Science (RMIT). His clinical background is in neurological rehabilitation and complex chronic conditions — including cardiac, neurological, and acute presentations — managing clients from referral through to discharge alongside GPs, surgeons and multidisciplinary teams. Riley works across the lifespan, with particular experience in paediatrics, and delivers care one-on-one, in group settings and in hydrotherapy. His earlier work with sports teams in performance environments shapes a structured, outcomes-driven approach that suits clients who expect precision, measurement and results. Outside the clinic you'll find him on the footy field, on the jiu jitsu mats, or fishing.
Rachel is a passionate and driven Exercise Physiologist with a strong foundation in exercise science and clinical rehabilitation. She holds a Bachelor of Science in Exercise and Sports Science and a Master of Clinical Exercise Physiology from the University of Western Australia. Rachel has experience working with a wide range of clients across musculoskeletal rehabilitation, chronic condition management, and mental health. She has a particular interest in using movement as a tool to support physical and emotional well-being and enjoys creating personalised programs that are functional, achievable, and empowering. With a strong sporting background and a calm, supportive approach, Rachel is committed to helping individuals feel confident in their bodies, improve their strength and resilience, and live healthier, more active lives.
Nadine is a yoga and Pilates teacher at O2 Active, leading Matwork Pilates and yoga classes — including Vinyasa and Slow Flow — for participants of every age, ability and level of experience. She completed her 200-hour yoga teacher training in 2023 and her Matwork Pilates training through Pilates ITC in 2025, and keeps building her craft through ongoing study in alignment, adjustment, and injury and pain management. Nadine blends traditional Pilates and yoga with creative, contemporary elements to build strength, mobility, balance and body awareness, and designs classes that connect breath, movement and community — so you leave feeling lighter, stronger and ready for the day. Originally from Germany and now calling Perth home, she's endlessly curious about how the body moves.
Our advisory board exists for one reason: to hold the clinical quality of our testing and exercise prescription to the highest standard. These are oversight and governance roles — our advisors don't take over patient care, and we're not a primary-care practice. Every client keeps their own GP and treating specialists at the centre of their care, and we report back to them at each review.
Dr Colin Coward sits on O2 Active's clinical advisory board as our Medical Advisor — an oversight role, not a treating one. A general practitioner who holds a first-class Physiological Sciences degree and a Medicine degree from the University of Oxford, Colin has spent two decades in general practice across the UK and Australia, with a particular focus on preventative and longevity-focused care. He is Medical Lead at Signal Health, the Perth precision-medicine and longevity clinic we partner with. In his advisory capacity, Colin helps align our testing and exercise prescription with best-practice medical care and supports our clinical governance. He does not see O2 Active's clients as patients or replace a referring doctor: every client's own GP stays at the centre of their care. For referrers, his involvement is simply added assurance that exercise prescription here rests on sound medical foundations — and that we understand exactly where exercise physiology ends and medical care begins.
Book an assessment with one of our Accredited Exercise Physiologists — or talk to our team first.
