4 scenarios:

  1. If you purchased the FlexPro Grip device / app and you change organizations / teams, all data saved in your History will stay with you.  You don’t need to do anything.
  2. If the organization / team you were playing for purchased the device for you, you move to a different organization / team, and your new organization gives you access to a FlexPro Grip device / app, just let us know.  We’ll transfer all data saved in your History to your new organization / team.  
  3. If the organization / team you were playing for purchased the device for you, you move to a different organization / team, your new organization does not provide FlexPro Grip devices / apps to their pitchers, and you wish to purchase your own device, just let us know.  Once you purchase your own device / app subscription, we’ll transfer all data saved in your History to you.   
  4. If you do not wish to purchase your own device but would like your data, let us know. We will send you a file of your data.

Everyone is different, but throughout our testing on hundreds of high school, college, and pro pitchers, most saw increases of greater than 20% in strength, endurance, and rate of force development after just 4 weeks of training 3 times a week on FlexPro Grip.

Each protocol varies slightly, but all protocols, including the warmup and prescribed rest period between reps and exercises, are designed to be completed in 5-12 minutes.

Unfortunately, no.  But we are so confident in FlexPro Grip’s ability to reduce the chance of a UCL tear that we will refund every dollar any player pays throughout his career for both the device and subscription if a player experiences a UCL injury requiring surgery, even if the player previously had surgery for a torn UCL.

To qualify for this guarantee, a player needs only to have completed at least 2 Strength or Endurance Protocol training sessions a week for 2 months prior to sustaining the injury, and provide FPG proof of surgery.

Done sensibly and responsibly, the short answer is absolutely yes.  Keep in mind that just as with any other form of resistance training, soreness or fatigue can occur.  Players who train on FlexPro Grip may experience mild forearm soreness over their first couple weeks of training.  This is the result of FlexPro Grip targeting the very muscle-tendon units that are optimally positioned to protect the UCL and are likely untrained.

One study found that throwing causes the UCL and elbow in players as young as 10 to begin to undergo structural changes.  Another study of over 300 little leaguers found that nearly 65% of those who pitched had a separation of the growth plate where the UCL attaches to their elbow.  Studies like these suggest that the majority of all adolescent baseball players are well on their way to tearing their UCL if they ultimately throw hard enough and / or play long enough, which explains why high school pitchers now comprise more than 50% of all patients who have Tommy John surgery.  If the seeds of a UCL tear are sewn as early as 10, training on FlexPro Grip at a similar age can help build the supporting musculature to provide early protection.

No.  Each device fits all hand sizes and is universal across handedness.

One size fits all hands.  If your hand grows as you age, your device can easily be adjusted to fit your hand.

The components of the FlexPro Grip device that sustain force consist primarily of either carbon fiber or steel.  You can expect the device you are purchasing to last you for your entire career.  But if any part fails for any reason at any time, let us know, and we will repair or replace it free of charge.

You can safely expect to get 8-10 hours of device usage on a single charge.

Research suggests that over 30% of all increases in the properties of the muscle-tendon units capable of protecting the UCL from injury will be lost in as little as 1 month, 55% in 2 months, and 80% in 3 months.  Once you make the commitment to train on FlexPro Grip to protect your UCL, we highly recommend you never take more than a couple weeks off from training.

You have over 20 muscles in your forearm that control flexion, extension, pronation and supination of your wrist and fingers.  However, extensive clinical research has shown that only a few of these muscles are anatomically positioned to support the UCL when the torque on your elbow is the greatest, which is at maximum external rotation or layback.  You can do plate holds, wrist rollers, fingertip push-ups or forearm curls routinely.  You can squeeze tennis balls or hand grips all you want.  You can twirl your hand in a rice bucket every day.  Unfortunately, either the muscles you would be strengthening with these exercises would not play any significant role in protecting the UCL at maximum external rotation, or you would not be able to match the required force consistently in these exercises to cause the muscle-tendon units to adapt in the way that you need for them to better protect your UCL.   

The simple truth is that if doing these exercises could protect the UCL, MLB pitchers would rarely ever tear their UCLs because every organization already does these exercises religiously.  But the fact that over 30% of all MLB pitchers have had Tommy John surgery and, according to published research, over a third of supposedly “healthy” pitchers who have never had TJ surgery have a partial-thickness UCL tear – meaning they could completely tear their UCLs at any time – makes it clear that the MLB has no answer to solve the problem.  

FlexPro Grip works because it is specifically designed to help you optimally target and strengthen the precise muscles that are best positioned to reduce the torque placed on your elbow when you throw, which is the only way to reduce the chance of a UCL tear.

Depending on the exercise being performed and the hand size of the user, the force measurement produced on a FlexPro Grip (FPG) device may not match the force produced on a standard Jamar dynamometer.

This is largely a function of the mechanical design of each instrument. While a Jamar dynamometer reportedly measures pounds or kilograms of force, the instrument only measures the squeezing force of the hand, with finger forces primarily being applied by the Flexor Digitorum Superficialis (FDS).

In contrast, FPG measures the amount of flexion force of the fingers primarily applied by either the FDS or the Flexor Digitorum Profundus (FDP). In our testing, we have found a fairly high correlation between the force users produce on FPG when targeting the FDS, but not as high when users target the FDP. This is not surprising as the FDP is at best minimally engaged when applying gripping force using a Jamar

Studies using a Jamar dynamometer have found wide variations of force being produced based on user
hand size / finger length. The same is true for FlexPro Grip. The reasons are obvious. The larger the size of the hand and the length of the fingers, the longer the levers. Whether someone is using a Jamar dynamometer or FPG device, the settings used on a Jamar dynamometer or the positioning of the finger
receivers on FPG will impact the force output on either device.

Consequently, we simply refer to the number produced whenever a user applies force on FPG device as a unit of force. If you ever want to compare the relative strength of different users, shoot us an email and we’ll explain how you can easily normalize the units of force produced by various users that accounts for different finger (lever) lengths.

Have a question we didn’t answer?

Send us an email and we’ll quickly get back to you.

Evidence based.
Proven results.

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