Finger strength · Dexterity · Control
G Hands is a controller-shaped finger trainer with adjustable resistance. Build strength, dexterity and endurance in 5–15 minutes a day, whether you game, play an instrument, or are working back to everyday grip with your therapist.
Made for
*With your clinician's go-ahead. Using G Hands for physical therapy or rehab? Talk to your doctor or hand therapist first. Read the safety guide
Start light. Add resistance as your strength and control improve.
As a warm-up before you play or practice, or as a short daily routine.
Short, regular sessions beat long, occasional ones.
Who it's for
Get your fingers ready before the first match and keep inputs steady deep into long sessions. G Hands holds your hands in the same position as a controller, so the strength you build carries straight into play.
Guitar, piano, strings, drums: every instrument asks your weakest fingers to keep up. Short daily sets build strength and independence in the ring and little fingers without eating into practice time.
Working back from an injury or surgery? Adjustable resistance means G Hands can fit into a hand-therapy program, but only one your doctor or therapist has set for you.
Muscle map
Past the knuckles, your fingers have no muscle of their own. They're moved by tendons from muscles in your forearm and palm. These are the groups G Hands loads most.
flexor digitorum superficialis & profundus
Forearm muscles whose long tendons curl every finger. They carry most of a sustained grip or a held trigger.
musculi lumbricales
Small palm muscles that bend the knuckle while keeping the finger straight: the motion behind a clean key or button press.
musculi interossei dorsales et palmares
Spread and close the fingers and steady them side to side, so one finger can move while the others hold still.
hypothenar: abductor, flexor & opponens digiti minimi
Move and stabilize the little finger, the outside edge of your grip. In one study, restricting the ring and little fingers together cut grip strength by 55% on average. See the research
Illustrative. Which muscles work, and how hard, depends on the exercise, your grip and your body. 3D model: right hand and forearm, adapted from Z-Anatomy and BodyParts3D (DBCLS), CC BY-SA 4.0.
The research
G Hands builds on published research into finger strength, dexterity and grip. Here's what five peer-reviewed studies found, and what they don't show.
Ring + little finger
The ring + little finger finding
Average loss of grip strength
When researchers restricted both the ring and little fingers, people lost an average of 55% of their measured grip strength (50 people, 100 hands).
The takeaway: these two fingers carry an outsized share of a strong, functional grip. The 55% is the loss measured when they're restricted, not a promise of what training adds.
Methot, Chinchalkar & Richards · 2010 · Canadian Journal of Plastic Surgery · Read the study
Scientific background only · none of these studies tested G Hands
Olafsdottir, Zatsiorsky & Latash · 2008 · Journal of Applied Physiology
What they found
In 12 healthy older adults, six weeks of finger-strength training increased maximal finger force and improved Grooved Pegboard performance.
Why it matters for G Hands
Direct evidence that finger resistance exercise can improve strength and a measured aspect of dexterity.
Methot, Chinchalkar & Richards · 2010 · Canadian Journal of Plastic Surgery
What they found
Restricting the little finger cut grip strength by about 33%. Restricting both the ring and little fingers cut it by 34–67%, an average of 55%.
Why it matters for G Hands
A strong biomechanical reason to train the ring and little fingers. This study measured restriction, not training.
Lundborg & Grooten · 2018 · Medical Problems of Performing Artists
What they found
In 24 professional musicians, an 11-week program increased neck and upper-extremity isometric strength by 11–19% and back-extensor endurance by 25%.
Why it matters for G Hands
Supports resistance exercise for hard-working upper limbs. Finger-specific benefits weren’t measured directly.
Kimoto, Oku & Furuya · 2019 · Scientific Reports
What they found
Trained pianists moved their fingers faster and more independently than non-musicians. Among pianists, speed was partly related to muscular strength.
Why it matters for G Hands
Links finger strength to aspects of dexterity. It compared groups and didn’t test a training device.
Park, Han & Shim · 2015 · Perceptual and Motor Skills
What they found
After resistance training of the wrist muscles, participants held objects with steadier grasping forces and rotational moments.
Why it matters for G Hands
Suggests some hand-coordination measures respond to resistance exercise. The program trained the wrist muscles, not G Hands.
Targeting the ring and little fingers is biomechanically well motivated, and finger-resistance training has improved finger force and selected hand-function measures in published research. No study above tested G Hands, and none shows that training these two fingers alone improves overall hand function.
Free routine
A sample session to show how G Hands fits your day. Start at the lightest resistance and move up only when every rep feels controlled.
01No device. Move slowly from a straight hand to a hook fist, full fist and tabletop. Gets the tendons gliding before you add load.
02Close every finger against the resistance, hold for five seconds, then let go slowly. Keep your wrist straight.
03Press with the ring and little fingers only while the others stay relaxed. Slow on the way down, controlled on the way up.
04Quick, light presses one finger at a time, like a button combo. Go only as fast as each press stays clean.
05No device. Spread your fingers wide, squeeze them together, repeat, then shake your hands loose before you play.
01No device. Move slowly from a straight hand to a hook fist, full fist and tabletop. Gets the tendons gliding before you add load.
02Press with one finger while the other three rest on the grip. The real work is keeping the others still.
03Hold the ring and little fingers down together, release, then hold each one on its own.
04No device. Spread your fingers as wide as is comfortable, then squeeze them together. The side-to-side control behind wide reaches.
05Close fully, then take four seconds to let go. Trains the control you need to release a note cleanly.
We don't publish a rehab routine, because the right one depends on your injury, your surgery and where you are in recovery. Bring G Hands to your next appointment and let your doctor, physical therapist or certified hand therapist decide if, when and how you use it.
Read the safety guideQuestions to ask at your appointment
Stop if you feel pain, numbness or tingling. This routine is general guidance for healthy hands, not medical advice.
The device
Most grip trainers build squeeze strength with the whole hand. G Hands works individual fingers in a natural playing position, so you train dexterity and control, not just crush strength.
Developed through testing and player feedback, from CAD to 3D-printed shells to the grip in your hands. It's tuned to the stabilizing muscles of the ring and little fingers that standard trainers miss.
Safety
G Hands is built for healthy hands getting stronger. If yours are healing, your clinician comes first.
Talk to your doctor, physical therapist or certified hand therapist before you start, and follow their plan for resistance, reps and rest. Don't use G Hands to self-treat an injury or condition.
Medical disclaimer. G Hands is a fitness and training product. It is not a medical device and is not intended to diagnose, treat, cure or prevent any disease or condition. The information on this site is general and is not a substitute for professional medical advice. Always seek the advice of your physician or another qualified health provider with questions about a medical condition, and never disregard professional advice because of something you read here.
A controller-shaped finger trainer with adjustable resistance. It builds finger strength, dexterity and control while your hands stay in a natural playing position.
Console and controller players, esports competitors, musicians, and anyone who wants stronger, better-coordinated fingers. If you are recovering from an injury or managing a hand condition, check with your clinician first.
Only with your clinician’s go-ahead. Talk to your doctor, physical therapist or certified hand therapist before you start, and follow their plan for resistance, reps and rest. G Hands is not a medical device and does not replace professional care.
Most grip trainers build squeeze strength with the whole hand. G Hands works individual fingers through controller-style movements, so you train dexterity and control, not just crush strength.
Behind the approach, yes. Published studies show that finger-resistance training improved finger force and some dexterity measures, and that the ring and little fingers carry a large share of grip strength. No published study has tested G Hands itself yet.
About 5 to 15 minutes. Short, consistent sessions beat long, occasional ones.
As a warm-up before you play or practice, or as part of a short daily routine.
Pre-orders are open now: reserve yours for $35.99, or $39.99 for a Charity Edition in a custom colour. Shipping and tax are added at checkout. Orders ship on a rolling basis, and you get a tracking number by email when yours ships.
All sales are final. Pre-orders are non-refundable, except where a refund is required by applicable consumer protection law (for example, if your order can’t ship on time) or your G Hands arrives damaged, defective or not as described. If that happens, email info@theghands.com and we’ll make it right.
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