Isokinetic Training

Isokinetic Strength Training was firstly introduced by Hislop, Perrine and Thistle in the 1960s.
With the special device, the speed of the equipment remains constant, and the resistance alters based on the exertion of the users. No matter how large or small exertion you carry out, the speed of the movement remains constant. Thus, the muscle contraction is able to achieve its maximum strength effect for every angle of the joints during the muscle strength training.
Isokinetic Strength Training also increases muscle strength, improves explosive power and enhances muscular endurance. It is recognized as the safest and most effective strength training in today’s rehabilitation and sports science.​
However, such equipment is rather costly and difficult to operate; the professionals are required to assist with the proper operation. Thus, such equipment can only be found only in medical centers and training research units, where the researchers apply the equipment and mainly focus on the study of motor system damage and the rehabilitation patient assessment.
Nevertheless, common people are not allowed to enjoy the safe and effective training.


1. Muscle force to be effectively applied:

Isokinetic contraction provides dynamic change of resistance for the maximum muscle contraction; this allows muscles reach their maximum contraction in its exercise range.

2. Decrease for overloading damage:

Isokinetic equipment produces resistance according to the output force of user, and this reduces the risk of overload damage.

3. Resistance of equipment adjusts automatically according to user’s body condition:

When user feels painful or tired, the exertion from user reduces as well; the equipment shall detect the force change right away. When the user stops exerting force, the equipment stops as well to prevent from injuries.

4. Various speed options:

Isokinetic Strength Training provides various speed options for clinician, trainer or user to set the speed (high or low) according to their needs.
High speed allows muscle fiber to contract at high intensity movement in a short period; low speed allows muscle fiber to contract at a low intensity movement in a long period.

5. Reduce the pressure on the joint while exercising:

Strength Isokinetic Training reduces pressure on joint during the exercise and improves the effect & safety level of muscle strength training.

6. Newton’s First Law:

Newton’s First Law of motion states that an object will remain at rest unless an outside force acts on it, or in other cases, while in the steady motion status of isotonic training, the unchanged resistance increases the inertial force of the limbs. As for the isokinetic training, the speed is controlled by the equipment; and the resistance comes from the user, thus, inertia force does not occur.

Isokinetic Strength Training provides adjustable compliance resistance to cope with the strength of user. This increases the safety of training and it can be applied on most of the health issues caused by musculoskeletal system disorder. Isokinetic strength Training increases the strength and endurance of muscle group of the joints.
It reduces the subjective symptoms of users and increases his/her functional activity. Isokinetic Strength Training has become a common treatment for physiotherapy rehabilitation nowadays.
Isokinetic Strength Training is the only training that enables the maximum muscle contraction in any range of motion. It also increases muscle strength, explosive power and muscular endurance. This is a high-safety training method and has significant effect on aged muscles and degenerative joints.
 Isokinetic Strength Training minimizes the pressure on joint during exercise and is a good training method for osteoarthritis patients.
It is crucial to provide space for knee joint movement in the recovery process of articular cartilage. Since articular cartilage has no blood vessels; it can only absorb nutrients from synovial fluid. Joint movement promotes the synovial fluid absorption for articular cartilage.
Isokinetic Strength Training provides help to osteoarthritis patients. Osteoarthritis cannot be cured, but it can be treated. Osteoarthritis patients are advised to undergo Isokinetic Strength Training at an early stage to improve their quality of life and avoid surgery. Isokinetic Strength Training is a major boon to osteoarthritis patients.


The common strength training devices are usually bulky, space-occupied traditional weight blocks training machines that might cause sports injury. Due to its high risk of injury to elderly, it is not a sport that suits everyone. 
In the 1980s, sports manufacturer in USA replaced the traditional weight blocks with “hydraulic cylinder”. However, hydraulic cylinder has the problems of high wear, low durability, one-way resistance etc.
The Advantage of Isokinetic Equipment

1. One equipment with two-way resistance
One equipment equals to two traditional weight training equipment.


2. The exertion controlled by users
No sports injuries at all when user undergoes the training based on his/her own body condition.


3. At any joint angle, the muscle contraction and stretching reaches its maximum.

4. 8 sets as the complete series
8 sets equal to 15 sets of traditional weight training equipment
All muscle groups will be trained.


5. Joyful isokinetic training for the elderly
100% safe, no fear of injury.


6. Space efficient and cost saving.


1. Unique electromechanical control design
Cost saving equipment creates the most effective and the safest strength training
Exercise could be safe and easy.


2. Isokinetic system of TurtleGym has the special resistance design
Various kinds of strength training can be performed with maximum or minimum exertion
2-way direction resistance with great benefits, no injuries at all.


3. Unique electromechanical control design allows the equipment proceeds with constant speed motion, and with adjustable stepless control mechanism.

4. Through the isokinetic exercise, the muscles of users are able to contract at any joint angles.


5. Through the isokinetic exercise, sports injuries could be avoided. Since the traditional weight block equipment may hurt users in the speed adjustment.


6. The isokinetic equipment is especially designed for the female, trainees with sports injuries or patients with degenerative arthritis for muscle training, rehabilitation and fitness requirement.


1. Regarding muscle strength training and joint training for senior citizens, special instruction and operation method are required, so as to avoid unnecessary sports injuries.


2. Physical therapy center or Chinese herbal medicine clinic where the patients are able to proceed with the rehabilitation for myositis, arthritis, osteoarthritis, tendon and ligament injuries.


3. The exercise centers which are especially designed for the female or the elderly, who could apply the equipment to achieve the training benefits in a very short time.

4. Day care center for senior citizens, elder care center, senior citizen gyms and nursing homes shall consider applying the Isokinetic Strength Training Equipment as the training device for the elderly.


5. Personal or small scale health training center, to make sure the effects and safety of the trainee while training.