Our knowledge helps you

get further

Our Knowledge


Our products helps you

get moving

Our Products


Our experience helps you

in rehabilitation

Our Experience


Underwater Bicycle


The EWAC medical underwater bicycle, also known as an aqua bike, is a specialized piece of equipment that is used in water-based rehabilitation to provide a low-impact cardiovascular workout for patients.

The buoyancy of the water reduces stress on the joints and spine, making it an ideal option for patients with injuries or mobility issues. The resistance of the water, and the resistance created by our specially developed resistance mechanism provides a challenging workout that helps to improve cardiovascular fitness and muscle tone.

An underwater bicycle can also be used to help patients improve their balance and coordination. The water provides a stable and secure environment for patients to practice pedaling movements, which can help to improve overall balance and stability.

Additionally, an underwater bicycle can be used for patients who are recovering from injuries or surgeries to the lower extremities such as knee or hip replacement. It also can be used for patients with chronic conditions such as arthritis to help improve flexibility, range of motion and muscle strength.

Overall, the EWAC Medical underwater bicycle is a versatile and effective tool for water-based rehabilitation, helping patients to improve their cardiovascular fitness, muscle tone, balance, and coordination. It provides a low-impact workout that can be customized to suit the needs and abilities of each patient.


The EWAC Medical underwater bicycle is specially designed for cycling exercises in water for rehabilitation purposes. Due to the unique properties of the variable resistance mechanism, the underwater bicycle can be used in any stage of the rehabilitation process.

The frame is made out of polished stainless steel and therefore the bicycle is suitable for use in a pool.


The underwater bicycle is ideal in all stages of rehabilitation. EWAC Medical has developed this underwaterbicycle with its experience in mind, that different stages of rehabilitation require a different amount of resistance. All this functionality is combined in one product.

Find out about our extensive expericence in projects around the world.


Repetative, low impact rotating leg movements are of increadible value in rehabilitation of lower extremities. Due to the warm water, buoyancy and the unique properties of the resistance mechanism, joints can be easily mobilised.

Resistance is speed dependent, so the bicycle can be used in any stage. Take a look at our articles about musculoskeletal, and sports rehabilitation.

Underwater Bicycle





More information

The EWAC Underwater Bicycle is designed for cycling exercises in water for rehabilitation purposes. It is equipped with a unique resistance mechanism, which causes resistance to increase exponentially with the cycling speed. The frame is made of polished 316 stainless steel and therefore suitable for use in a therapy pool.

The unique resistance mechanism closely resembles the conditions actual cycling. Increasing speed takes a considerable effort. Slowing down, the inertia gives the sensation the bike is still going. The resistance increases exponentially with velocity.

Exercising in water increases the efficiency of the heart and because of the heat conductivity; the body is easily cooled while the connective tissue becomes more flexible. Water is a safe and low impact exercise environment. The underwater bicycle is an excellent tool for rehabilitation as well as combatting obesity.

Underwater bicycle

  • Unique resistance mechanism
  • Effort can be derived directly from speed of cycling
  • High grade construction
  • Safe, enclosed turbine
  • Virtually maintenance free
  • Adjustable to patient length
  • Mobile

Training in water

  •  Pleasant and comfortable
  •  Safe and low impact
  •  Faster combustion because of heart efficiency increase
  •  Better cooling through conductivity
  •  Relaxing and pain reducing


Fold Back

Product Videos


Chambers (2023) The Benefits of Aquatic Exercise & Therapy for Individuals with Osteoarthritis of the KneeKwok (2022) The effect of aquatic High Intensity Interval Training on cardiometabolic and physical health markers in women: A systematic review and meta-analysisLim HS (2014) The Influence of Short-term Aquatic Training on Obstacle Crossing in Gait by the ElderlyRewald (2017) Aquatic cycling—What do we know? A scoping review on head-out aquatic cyclingFlávia Yázigi (2013) The PICO project: aquatic exercise for knee osteoarthritis in overweight and obese individualsFelten-Barentz et al (2018), Patient views regarding the impact of hydrotherapy on critically ill ventilated patients: A qualitative exploration studyZotz (2013) Aquatic physical therapy for Parkinson’s diseaseWaller (2017) Effects of high intensity resistance aquatic training on body composition and walking speed in women with mild knee osteoarthritis: a 4-month RCT with 12-month follow-upTaylor (2003) The ventilated patient undergoing hydrotherapy – a case studyATACP (2012) Aquatic Therapy for clients with a tracheostomyWegner (2017) Hydrotherapy for a long term ventilated patient – A case study and implications for practiceMorer (2020) Evaluation of the Feasibility of a Two-Week Course of Aquatic Therapy and Thalassotherapy in a Mild Post-Stroke PopulationCuesta-Vargas (2020) Identification of Tools for the Functional and Subjective Assessment of Patients in an Aquatic Environment A Systematic ReviewYoshihara (2020) Pool walking may improve renal function by suppressing the renin-angiotensin-aldosterone system in healthy pregnant womenGraca (2020) Immediate Effects of Aquatic Therapy on Balance in Older Adults with Upper Limb Dysfunction: An Exploratory StudyChien (2020) Land versus water HIIE (HIIT) effects on muscle oxygenation and physiological parameter responses in postmenopausal women (Scientific Reports by Nature)Hamacher (2018) Thinking While Moving or Moving While Thinking – Concepts of Motor-Cognitive Training for Cognitive Performance EnhancementNiks & ‘t Hoofd (2017) Aquamentia, Introducing a Newly Developed Swimming Intervention for People With DementiaLim (2014) The Influence of Short-term Aquatic Training on Obstacle Crossing in Gait by the ElderlyBarbosa (2014) Effect of Watsu therapy on psychological aspects and quality of life of patients with temporomandibular disorderPérez-de la Cruz (2020) Comparison of Aquatic Therapy vs. Dry Land Therapy to Improve Mobility of Chronic Stroke PatientsHeywood (2018) Force during functional exercises on land and in water in older adults with and without knee osteoarthritis; Implications for rehabilitationAyan (2015): Parkinson systematic reviewVolpe (2014) Comparing the effects of hydrotherapy and land-based therapy on balance in patients with Parkinson’s disease: a randomized controlled pilot studyFelten-Barentz et al (2015), Feasibility and Safety of Hydrotherapy in Critically Ill Ventilated PatientsAssis (2006), A randomised controlled trial of deep water running clinical effectiveness of aquatic excercise to treat fibromyalgia


YouTube videos