Athletes

Jay Sinnott

OWNER OF SYNERGY SUPPLEMENTS

Jay is the owner of Synergy Supplements and Synergy Fitness, and has been involved in the health, fitness and recovery industry for over 12 years. With qualifications as a Gym Instructor, Personal Trainer and Online Coach, Jay has worked with a wide range of clients, helping people improve their health, fitness, performance and overall wellbeing through practical, tailored coaching and ongoing support.

Passionate about both fitness and recovery, Jay understands the importance of supporting the body not only for performance, but for long-term health, confidence and quality of life. His personal and professional experience within recovery has shaped his modern approach to health and fitness, combining training, recovery and lifestyle optimisation to help people achieve sustainable results.

This passion naturally led Jason into the supplement industry, where his mission is to provide premium-quality products people can genuinely trust and benefit from. Whether the goal is fat loss, muscle gain, recovery or overall health improvement, Jay is committed to helping clients perform and feel at their best.

Committed to continuous growth and innovation within the industry, Jay is constantly expanding his knowledge and developing new recovery-focused services, with plans to continue building a professional, modern and results-driven health and fitness brand in Ireland before expanding internationally.


John van den Oosten

WNBF PROFESSIONAL BODYBUILDER

John van den Oosten is a WNBF Professional Bodybuilder with over 10 years of experience in the fitness and bodybuilding industry. Since beginning his competitive bodybuilding journey, he has competed in more than 10 shows across Ireland, Germany and the United States, consistently establishing himself as one of the top competitors on stage. Throughout his career, John has secured 4 first-place finishes, 3 overall titles, and has never placed outside the top 3 in competition. Known for his discipline, conditioning and commitment to natural bodybuilding, John earned his WNBF Pro Card through years of dedication, elite-level preparation and proven performance. His passion for physique development, training and nutrition has made him a respected figure within the natural bodybuilding community.

 


Elaine Harrison

PROFESSIONAL BOXER

Elaine Harrison began boxing at the age of 15 and quickly developed a passion for the sport, going on to win multiple Leinster titles and become a two-time Irish champion during her amateur career. Competing out of Bray, Arklow and later Ardnaree Boxing Club under coach Trevor Nash, Elaine progressed to Elite level and earned the opportunity to train with Ireland’s High Performance Team in Dublin following strong performances in national competition.

Elaine later moved to England to join the British Army, where she continued her boxing career as part of the Army Boxing Team for four years, competing internationally against countries including China, Ukraine, France and Australia. Following a successful amateur and military boxing career, Elaine made the decision to turn professional and is now training under professional coach Luke Kelleher as she continues pursuing her ambitions in the professional ranks.