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Grip Strength

Strength of the grip and strength of the fingers are highly correlated. The contribution of the index finger is about 25% of the total force, the middle finger 35%, the ring finger 25% and 14% of the force is contributed by the pinky. Looking at these values you can see that the radial side or thumb side of your hand contributes about 60% of the hands gripping power and the ulnar side 40%.

Body size and finger length are moderately correlated with strength. Much of the closing power of the hands comes from the extrinsic muscles that make up the forearm, as fingers are moved by tendons which are pulled by these muscles.  It has been shown in studies that as little as a 2 cm change in circumference of the forearm can affect gripping power.

Pendulum grip machine

The absolute best way to increase overall hand strength is training, whereby the musculature is forcibly lengthened, commonly referred to as eccentric exercise or negative only training. Tyler Hobson the designer of Pendulum built the Pendulum Gripper not only to exercise by closing the hand, but developed a tool for lengthening contractions.

Pendulum grip machine

Using the foot pedal on the Pendulum Gripper to assist in negative only training

To maximize hand strength load the gripper with a weight that can be squeezed tight for a full second and then lowered slowly for an 8 count. Quickly the athlete uses their foot to close the gripper and once again hold the weight with no movement for a full second before lowering the weight in 8 seconds.  The hand  must be halfway open on the count of 4. Every inch of the exercise is important, being half way down in four seconds means that the athlete is 1/4 of the way down in 2 seconds and 1/8 of the way down in 1 second.

Eccentric Grip

Each rep is counted from the squeezed position until the index finger becomes almost completely extended as shown

Perfect repetitions is what the coach and athlete are after, the exercise is completed when the lifter can no longer control the decent of the weight at an 8 second pace.  When 8 perfect reps are achieved in exactly 8 seconds, 2 1/2 lbs. can be added.

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Pendulum Grippers ready to be shipped.….waiting to Get the hands Strong


Closed And Open Chain

Open kinetic chain exercises of the lower limb are movements, where the distal segment is unloaded and free to move. The opposite is true of closed kinetic chain exercises, whereby  there is enough resistance to prohibit free motion.

Closed kinetic chain exercises are movements such as squats, Pendulum Squat Pro, leg presses and lunges, while open chain exercises are actions like leg curls, leg extensions and the Pendulum Reverse Glute Ham.

The kinetic chain can be understood as interrelated joints and body parts working with one another during motion. This creates a chain of events that affects the movement of neighboring joints and segments.

The advantage of open chain movements is that they tend to be better at isolating muscle and often are selected for specific rehabilitation and used to accentuate performance. While closed chain movements in general would be classified as more functional and closely approximating movements that are used in sport and daily life.

Pendulum Reverse Glute Ham Machine

Open Chain Reverse Glute Ham

Pendulum Power Squat Pro

Closed Chain Pendulum Power Squat Pro

Pendulum Power Squat Pro XT

Closed Chain Pendulum Power Squat Pro XT

Arkansas Baseball Weight Room
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2-for-2 Method

Some trainers, coaches and athletes use what is called the 2-for-2 Method for increasing training load. The rule is if the trainee can perform two or more repetitions over one’s ‘repetition goal’ in the last set of an exercise, for two consecutive workouts, the weight is added for that particular exercise the next training session.

Bench Rep