Insights

Stories, news, and evidence from the field.

Patient and clinic spotlights, company announcements, and the peer-reviewed research behind our technology — gathered in one place.

Customer Spotlight

Building a world-class gym at Craig H. Neilsen Rehabilitation Hospital

Why two ZeroG systems — and later ZeroG 3D — became the cornerstone of a rehabilitation gym built for the most complex neurological injuries.

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Since its 2020 opening, the Craig H. Neilsen Rehabilitation Hospital set out to meet the most complex neurological injuries with the most advanced technology available. In a recent interview, Randy Carson, PT, DPT, NCS, explains why Aretech technology was — and continues to be — the cornerstone of their rehabilitation gym. The decision to start with two ZeroG Gait and Balance Systems was rooted in a commitment to both patient progression and therapist safety.

Randy points to three essential advantages of ZeroG. Safety: advanced fall protection lets patients "fail safely," building the confidence to attempt difficult movements without fear. Therapist empowerment: by removing the physical burden of preventing falls, therapists can focus entirely on high-level clinical interventions rather than manual spotting. Operational efficiency: a user-friendly design gets patients set up and training in under five minutes.

After four years of success with the original ZeroG, the team integrated Aretech's ZeroG 3-Dimensional BWS System to support non-linear, "real-world" recovery. The upgrade adds 360-degree freedom for multi-directional pivots and complex obstacle courses, functional ADL practice such as navigating around furniture within a protected environment, and high-intensity training that keeps patients engaged at every stage. Together, the track-based ZeroG systems and the new ZeroG 3D ensure that every patient — regardless of where they are in recovery — has access to the best technology in the world.

Patient Story

A firefighter's return after Guillain-Barré

After Guillain-Barré Syndrome left Lakeland firefighter Steve Connors paralyzed, ZeroG helped him relearn to walk and rebuild the strength to return to the job he loves.

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When Lakeland firefighter Steve Connors woke one December morning with tingling in his hands and feet, he knew something was wrong — and told his wife to drive him straight to Tampa General Hospital. What started as inexplicable weakness rapidly became life-threatening, eventually paralyzing his entire body; he was unable to walk, eat, speak, or even breathe on his own. Doctors diagnosed Guillain-Barré Syndrome, a rare disorder in which the immune system attacks the nerves.

As part of his recovery at Tampa General's Rehabilitation Center, Steve trained on Aretech's ZeroG Gait and Balance System with an integrated treadmill. Because the harness rides an overhead track, he and his therapist had the reassurance that he was secure and couldn't fall — the confidence he needed to push his limits. As TGH physical therapist Manuel Garcia-Gaona notes, the system is fully secure and supports patients up to 400 pounds; what once took three therapists to assist now takes just one.

Through hard work and extensive physical therapy, Steve relearned how to eat and walk and is steadily rebuilding his strength. Now in outpatient rehab twice a week and a vocal advocate for the ZeroG, he has his sights set on returning to what he loves — serving as a Lakeland firefighter.

Customer Spotlight

A decade of trust: how Brooks Rehabilitation grew with ZeroG

An early adopter in 2012, Brooks Rehabilitation has logged more than 1,200 hours of ZeroG use every year — and upgraded to Version 3 to keep pushing recovery forward.

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Brooks Rehabilitation was an early adopter, integrating the original ZeroG Version 1 in 2012 — at a time when robotic body-weight support systems were still a new concept in rehabilitation. ZeroG quickly became an essential part of their patients' recovery, and the numbers reflect it: the clinical team has consistently logged over 1,200 hours of ZeroG use every year.

Since 2012, Aretech's ZeroG Gait & Balance System has served as a cornerstone of Brooks Rehabilitation's neurological program in Jacksonville, FL. After a decade of rigorous clinical use with the original system, the team moved into its next chapter by upgrading to ZeroG Version 3 in 2021 — a natural evolution for a group that had spent years building its practice and expertise around Aretech's technology.

With thousands of hours of clinical experience and more than a decade of history, Brooks continues to push the boundaries of recovery — pairing a tenured commitment to patient care with Aretech's evolving technology to maintain a premier standard of rehabilitation.

Patient Story

Maya's story: training with MS and fibromyalgia

How dynamic body-weight support and TRiP help a patient living with multiple sclerosis and fibromyalgia keep moving and build confidence.

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When Maya Rodriguez was 13, black spots began affecting her vision. Soon after came balance issues and unexpected weakness in her leg that caused her to fall. Her symptoms were traced to multiple sclerosis; three years later, she was also diagnosed with fibromyalgia.

By 17, standing, walking, and joining in activities had become difficult, and a fear of falling left her using a transport wheelchair at home and in the community. At Barrow Neurological Institute's Movement Disorders Clinic in Phoenix, she began working with Whitney McGinn, PT, DPT, MSCS.

"I wanted to improve her confidence and endurance with walking in the home and eventually community distances, with an emphasis on dynamic balance."Whitney McGinn, PT, DPT, MSCS — Barrow Neurological Institute

Whitney used Aretech's ZeroG Gait and Balance System as one piece of Maya's intensive therapy. Because ZeroG protects against falling, Maya could safely attempt unsupported activities on her own.

"Being able to walk, learn how to function, and gain strength without the worry and fear gave me so much confidence, because I knew I wasn't going to fall."Maya Rodriguez

In her first session, with dynamic body-weight support set to 25%, Maya walked 172 feet. Over the following sessions the support was adjusted between 7% and 20% depending on the day, and her distance climbed steadily — by her fifth session she walked 1,406 feet, over 1,200 feet more than her first. Near the end of her time at Barrow, she was walking outside on uneven terrain with walking poles. Advanced work included Facilitation mode to push her speed and cadence, and TRiP perturbations to challenge her balance while standing, walking, turning, and seated.

Now 21, Maya completed an Aesthetics program at the East Valley Institute of Technology — where she was voted student of the year — and looks forward to becoming a practicing esthetician.

Customer Spotlight

ZeroG at the Center for Human Performance Optimization

Clinicians at Boys Town National Research Hospital describe how dynamic body-weight support lets patients safely explore movements they wouldn't attempt on their own.

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The staff at the Boys Town National Research Hospital in Omaha, Nebraska describe how Aretech's ZeroG Gait & Balance System is helping their patients at the new Center for Human Performance Optimization.

ZeroG is being used to let patients try activities they aren't confident attempting on their own, in a safe environment with dynamic body-weight support. The robot tracks each patient's movements as they walk with no resistance, for a natural training environment.

"ZeroG gives patients the opportunity to explore movements that they otherwise wouldn't have the opportunity to do."Brad Corr, PT, DPT — Boys Town National Research Hospital
Patient Story

Walking again after a spinal-cord stroke

A Lincoln bodybuilder's climb back — from wheelchair to a single cane — after a rare stroke in the spinal cord, with ZeroG backing every step.

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A rare stroke in the spinal cord left Vigan, a Lincoln bodybuilder, relearning how to move. His recovery has been a steady climb — from a wheelchair to a walker, then to crutches, and now to a single cane — built on an intensive, technology-driven therapy program.

Alongside aquatic therapy and robotic tools like the Lokomat, Vigan trains in Aretech's ZeroG harness, which lets him walk overground without holding on for support. With dynamic body-weight support and fall protection backing every repetition, he can push through demanding work — walking, high knees, and the lunges he loved long before his injury. “I used to love lunges before the accident,” he says.

For an athlete used to giving everything, the mindset hasn't changed. “You get what you put in, so I'm always invested 100%,” Vigan says. Now cleared to return to the gym, he keeps building strength and confidence — a testament to how far overground gait training can carry a determined patient.

Patient Story

"Pure magic": chasing Alexandra's first steps

Born with Pitt Hopkins Syndrome, seven-year-old Alexandra is working toward her first independent steps in ZeroG — and her mom calls the progress pure magic.

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Inside United Cerebral Palsy of Central Arizona in Phoenix, physical therapist Atalie Holem preps seven-year-old Alexandra Anderson to work with the clinic's newest robot. "It allows us to practice balance and walking with the support of a dynamic trolley," Holem says — and for Alexandra, it's giving her the best chance of one day walking on her own.

At 15 months old, Alexandra was diagnosed with Pitt Hopkins Syndrome, a single missing gene on her eighteenth chromosome. She is nonverbal and faces a wide range of physical limitations, and she has never taken an independent first step. Once she's hooked into the harness, though, she can put her walking muscles to work: the ZeroG rides an overhead track, moves with her, and provides exactly as much support as she needs while quietly logging her body-weight support, the falls it prevents, and the distance she covers — all of it progress her team can document.

After a half-hour session, the harness comes off — and Alexandra, her brain and body still firing on memory, takes assisted steps holding Atalie's hand.

"Getting to see her make those steps in the gait trainer, and then when it's off of her, being able to take those assisted steps just holding Atalie's hand — I mean, that is just pure magic."Nicole — Alexandra's mom

The system is the only one of its kind in the Southwest, made possible by a $300,000 investment from donors including the Arizona Diamondbacks Foundation, the Arizona Board of Visitors, and Thunderbird Charities. And the hope it carries is backed by evidence: research shows children who receive robotic gait training alongside conventional physical therapy have a higher chance of gaining independent mobility than those who receive conventional therapy alone.

Patient Story

From 20 feet to 800: Jewel's comeback

After a few weeks of intensive training in ZeroG, a patient who could barely walk 20 feet was covering nearly 800 in a single session — with the golf course back in sight.

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Jewel enrolled in an intensive therapy program on a referral from his doctor and began seeing results almost immediately.

"He walked maybe 15–20 feet tops before having to sit down, because he felt his legs were going to give out."Melissa Dygulski, PT, DPT, NCS — recalling Jewel's first evaluation

After a few weeks of training in Aretech's ZeroG Gait and Balance System, Jewel was able to walk close to 800 feet in a single session — far beyond the goal he had set for the day.

Now the golf course is back in sight, and Jewel has set himself a new goal: to be back out with his buddies this summer. As he puts it, "the score doesn't make a difference." He just wants to play.

Patient Story

No more fear of falling: Cameron's 1,500 steps

At St. Luke's in Spokane, 21-year-old Cameron Tweedy went from a few hundred steps a session to more than 1,500 once the fear of falling was gone.

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At St. Luke's Rehabilitation in Spokane, Washington, 21-year-old Cameron Tweedy was relearning to walk — transitioning from a walker to crutches and managing roughly 400 to 600 steps per session. The hardest part wasn't the effort; it was the fear. Without full sensation in the lower half of his body, every step carried the worry of falling.

That changed when he began training in Aretech's ZeroG Gait and Balance System, which rides a U-shaped ceiling track and suspends him in a harness, providing dynamic body-weight support and fall protection. Within a week or two, Cameron exceeded 1,500 steps in a single session.

"I struggled more with walking with that fear of falling… When I started using the ZeroG, that's when my progression started getting better, because the fear of falling went away."Cameron Tweedy

His care team saw the difference, too. By letting patients feel their own loss of balance without the risk of a real fall, ZeroG frees clinicians to focus on better treatment. As St. Luke's Jake Allstot noted, in their first stretch with the system the team worked with 32 patients and prevented 250 falls — "freedom of movement… with safety at the forefront."

Patient Story

"13 Strong": Alixus Hearn walks again

Told she might never walk again after a car wreck, Northeast Lauderdale softball star Alixus Hearn went "head first" into rehab — and back onto her feet.

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A standout center fielder for the Northeast Lauderdale Lady Trojans, Alixus Hearn wasn't about to spend her life sitting down. On October 2, 2017, a car wreck ejected her from her vehicle and left her paralyzed from the waist down. Doctors told her she might never walk again — but Hearn chose a vigorous rehab program at Methodist Rehabilitation Center in Jackson, Mississippi, and threw herself into it.

Among the technologies that made the difference was Aretech's ZeroG Gait and Balance System. Mounted to an overhead track, it harnessed her upright and let her practice a wide range of movements — walking, balance, sit-to-stand, even stairs — all without the risk of falling. Her comeback came in steps: baby steps that November, then a walker, and eventually a cane she used from February to May. Therapy that once filled three days a week is now down to one.

"Having my mom and dad with me, they kept the positive energy around me. I just put everything in and went head first. I wasn't sitting down until I got better."Alixus Hearn

Backed by her parents and a community that rallied behind the slogan "13 Strong" — for the No. 13 she wore on the field — Alixus is back on her feet and doing what she does best: setting goals and checking them off.

Patient Story

A dad's dream of walking his daughters down the aisle

Paralysed in a car crash, Glasgow dad-of-four Luke Louden went from barely moving to walking 57 metres on ZeroG — and dreaming of his daughters' wedding days.

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In August 2020, Luke Louden — a 32-year-old dairyman from Whauphill in Dumfries and Galloway — lost control of his car near his home and suffered an incomplete spinal injury that left him paralysed. He knew instantly. Doctors told him he had only a slim chance of ever regaining movement in his legs, and for more than two years he watched his hope drain away. "I was really fit and active, so to lose the use of my legs was tough," he said.

That changed when Luke became the first patient in Scotland to train on the ZeroG Gait and Balance System at Glasgow's Queen Elizabeth National Spinal Injuries Unit. The robotic system fully supports him and automatically synchronises with his movements as he works with a single physiotherapist, preventing falls so he can push for more repetitions. "The ZeroG system was hard at first because my limbs didn't know what to do, but then everything became smoother," he said. "I've gone from hardly being able to move to being able to walk 20 metres nonstop at the bars. My record on the ZeroG system is 57 metres." Along the way he's had less pain, fewer spasms, better sleep, and renewed hope.

"The dream would obviously be to walk my girls down the aisle, so I'm going to keep going, to keep trying — for Anna and all my children."Luke Louden
Technology Spotlight

TRiP: turning loss of balance into training

A closer look at Training Responses in Postural rehabilitation — how controlled perturbations build the reactive balance patients need in the real world.

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Most real-world falls happen in motion — while walking and turning, not standing still. Yet traditional therapy often trains balance in place. TRiP (Training Responses in Postural rehabilitation) is built to close that gap.

Integrated directly into ZeroG, TRiP delivers controlled, unanticipated perturbations of varying strength and direction while a patient is walking or holding a posture. Those balance disruptions trigger the compensatory stepping and recovery reactions patients rely on outside the clinic.

Because every session runs with ZeroG's dynamic body-weight support and fall protection, clinicians can provoke a genuine loss of balance — and let the patient practice recovering from it — with no risk of a fall.

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Product

Aretech launches Arcade 3D, interactive game-based therapy for ZeroG 3D

A new suite of therapy games built exclusively for ZeroG 3D, delivering dynamic, postural, and cognitive challenges in a safe three-dimensional workspace.

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Aretech, LLC, the leader in robotic body-weight support systems, announced the launch of Arcade 3D — an interactive suite of therapy games designed exclusively for the ZeroG 3-Dimensional Body-Weight Support System. Aretech debuted Arcade 3D at the American Physical Therapy Association's Combined Sections Meeting in Anaheim, CA.

Arcade 3D delivers dynamic, postural, and cognitive challenges within a safe, three-dimensional workspace, letting patients engage in therapy that is as entertaining as it is effective. It is built around three core pillars: dynamic movement that encourages multi-directional and lateral maneuvers, postural challenge, and cognitive engagement. Configurable games can be adapted across a wide range of functional levels.

"By integrating interactive gaming with the freedom of ZeroG 3D, we're allowing therapists to push boundaries while keeping the experience fun and motivating. Rehabilitation works best when patients are engaged, challenged, and progressing toward meaningful goals."Joseph Hidler, PhD — CEO, Aretech
Milestone

Aretech installs the first ZeroG 3D system

The Kennedy Krieger Institute becomes the first center in the world to treat patients with ZeroG 3D, the first 3-dimensional robotic body-weight support system.

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Aretech, LLC announced the first installation of ZeroG 3D, a 3-dimensional body-weight support system. The Kennedy Krieger Institute became the first center in the world to begin using ZeroG 3D with patients, at its location serving the International Center for Spinal Cord Injury.

The system installed at Kennedy Krieger has a workspace 10 feet wide by 50 feet long. That large area gives staff a wide variety of treatment options — including using a treadmill and other equipment — all while providing dynamic body-weight support and fall protection. Therapists can safely work on gait, balance, and functional activities of daily living, and simulate real-world scenarios such as navigating a kitchen or laundry room.

"Kennedy Krieger has been using Aretech technology at two of their other locations. They are a wonderful organization, and we couldn't be more thrilled that they are the first to be using ZeroG 3D with their patients."Joe Hidler, PhD — CEO, Aretech
Product

Aretech introduces ZeroG 3D

The world's first 3-dimensional robotic body-weight support system — supporting patients up to 450 lbs from a single point across a full 3D workspace — debuts at APTA-CSM.

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Aretech introduced ZeroG 3D at the American Physical Therapy Association's Combined Sections Meeting (APTA-CSM) in San Diego. ZeroG 3D is the world's first 3-dimensional robotic body-weight support system, able to support a patient up to 450 pounds from a single point of support — rather than multiple cables — within the clinician's workspace.

ZeroG 3D allows patients to move unrestricted across a workspace up to 500 square feet, with dynamic body-weight support and fall protection. A wide variety of activities — gait, balance, turning, side-stepping, and navigation — can be practiced safely. Customizable boundaries let clinicians lock the robot along a single plane or define paths of varying widths to limit lateral movement.

"ZeroG 3D will allow me to work on stepping strategies in all directions in a natural way, similar to what is done in the real world."Whitney McGinn, PT, DPT, MSCS — Barrow Neurological Institute
Outcomes

New clinical research shows therapy with ZeroG leads to better patient outcomes

Multiple published studies in acute stroke and traumatic brain injury find significantly higher clinical gains with ZeroG compared to standard of care.

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Aretech announced that multiple published research studies demonstrate that patients who use the ZeroG Gait and Balance System during inpatient rehabilitation achieve significantly higher clinical outcomes compared to traditional standard-of-care therapy. The studies, conducted in patients with acute stroke and acute traumatic brain injury, highlight ZeroG's ability to provide dynamic body-weight support, controlled perturbations, and fall protection.

One peer-reviewed study performed at Gaylord Specialty Healthcare provides the first published evidence for incorporating overground TRiP perturbations into gait rehabilitation following stroke. Patients treated with ZeroG and TRiP achieved significantly higher gains in Berg Balance scores than those receiving standard of care — findings that suggest therapy including ZeroG with TRiP may help lower fall risk.

"We were impressed with the degree of balance improvement in the group that used ZeroG with TRiP during their inpatient rehabilitation."Pete Grevelding, PT, MSPT, NCS — Gaylord Specialty Healthcare

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When we have company news to share, you'll find it here.

Research

TRiP Perturbation Module for Gait & Balance Rehabilitation

A trial of ZeroG's TRiP perturbation module found that adding controlled balance perturbations to body-weight-supported training is safe after stroke — and the group training with TRiP showed greater improvement.

Preliminary evaluation study · 2022
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This preliminary study evaluated ZeroG's TRiP — a balance-perturbation module integrated directly into the track-mounted ZeroG body-weight support system — in patients recovering from acute stroke. At a long-term acute care hospital, inpatients with a Berg Balance Scale score of 21 or greater completed eight body-weight-supported gait and balance sessions over two weeks; one group also trained with TRiP, receiving lateral, anterior, and posterior balance perturbations, while the other did not. Both groups improved on the Berg Balance Scale and the Activities-Specific Balance Confidence scale — and the group training with TRiP showed greater gains. The findings confirm the perturbations were safe and beneficial during post-acute stroke rehabilitation, and provide the rationale and baseline data for a larger follow-up trial.

Research

Therapy with ZeroG leads to better patient outcomes

Across multiple published studies in acute stroke and traumatic brain injury, patients trained with ZeroG achieved significantly higher clinical gains than standard of care.

Peer-reviewed studies in stroke & TBI · 2022
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Multiple published research studies demonstrate that patients who use the ZeroG Gait and Balance System during inpatient rehabilitation achieve significantly higher clinical outcomes than those receiving traditional standard-of-care therapy. The studies — conducted in patients with acute stroke and acute traumatic brain injury — point to ZeroG's combination of dynamic body-weight support, controlled perturbations, and fall protection.

One peer-reviewed study at Gaylord Specialty Healthcare provided the first published evidence for incorporating overground TRiP perturbations into gait rehabilitation following stroke: patients treated with ZeroG and TRiP achieved significantly higher gains in Berg Balance scores than those receiving standard of care — suggesting the approach may help lower fall risk.

"We were impressed with the degree of balance improvement in the group that used ZeroG with TRiP during their inpatient rehabilitation."Pete Grevelding, PT, MSPT, NCS — Gaylord Specialty Healthcare
Research

Dynamic body-weight support and recovery after traumatic brain injury

In an exploratory study, patients who trained with ZeroG after a traumatic brain injury made greater functional gains than those receiving standard of care.

Anggelis E, Powell ES, Westgate PM, Glueck AC, Sawaki L · NeuroRehabilitation · 2019
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This exploratory study examined whether adding dynamic body-weight support (DBWS) — delivered with ZeroG — to inpatient rehabilitation improves outcomes after traumatic brain injury. In a retrospective cohort at Cardinal Hill Rehabilitation Hospital, patients who trained with ZeroG were compared against a standard-of-care (SOC) group treated before the system was installed, using the Functional Independence Measure (FIM) from admission to discharge.

Both groups improved significantly in total FIM by discharge — but the ZeroG (DBWS) group showed greater gains overall, in total FIM as well as the motor and cognitive FIM subscales, than the standard-of-care group.

The authors conclude that dynamic body-weight support has the potential to enable a greater intensity of therapy during inpatient rehabilitation, and to yield better functional outcomes than standard of care for patients recovering from TBI.

Research

Robotic devices for overground gait and balance training

A book-chapter review of overground gait- and balance-training robotics, including the design principles behind systems like ZeroG.

Hidler J, Stienen A, Vallery H · Neurorehabilitation Technology (2nd ed.), Springer · 2016
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This book chapter reviews the landscape of robotic devices for overground gait and balance training, including the engineering principles behind dynamic body-weight support systems such as ZeroG.

It appears as Chapter 23 in Neurorehabilitation Technology (Second Edition), edited by V. Dietz and D. Reinkensmeyer, published by Springer.

Research

Restoring overground walking after paraplegia with a brain-computer interface

A participant with complete paraplegia walked overground using their own brain activity, with ZeroG providing body-weight support and fall protection.

King et al. · J NeuroEngineering & Rehabilitation · 2015
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In this study, the ability to walk was restored following a spinal cord injury using the participant's own brain activity. It marked the first time a person with complete paraplegia was able to walk without relying on manually controlled robotic limbs, as required by previous walking-aid devices.

The participant, who had been paralyzed for five years, walked along a course using a brain-computer interface paired with functional electrical stimulation. The ZeroG body-weight support system was used throughout to prevent falls while the participant performed the walking trials.

Research

Brain-controlled stimulation for overground walking after spinal cord injury

A proof-of-concept showing a person with paraplegia could drive a functional electrical stimulation system to walk overground using only EEG-decoded brain activity.

King CE, Wang PT, McCrimmon CM, et al. · IEEE Eng Med Biol Soc (EMBC) · 2014
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After a spinal cord injury, ambulation is typically replaced by a wheelchair — which over time can lead to numerous comorbidities. This study reports the first electroencephalogram (EEG)-based brain-computer interface (BCI) paired with a functional electrical stimulation (FES) system for overground walking, and assesses its performance in an individual with paraplegia due to spinal cord injury.

The participant first reconditioned his muscles — with a physical therapist and at-home FES endurance training — to build the strength and standing ability needed for gait. He then learned to operate the EEG-based BCI using an "attempted walking" versus "idling" control strategy, which was integrated with the FES system so that his decoded intent triggered the stepping movements as he walked a marked overground course, with body-weight support for safety during testing.

Across sessions, the participant was able to purposefully operate the BCI-FES system continuously in real time. The authors conclude that, if validated in a larger population, this kind of brain-controlled approach could help pave the way toward restoring overground walking after spinal cord injury.

Research

Muscle activation during body-weight-supported walking

An EMG study quantified how increasing body-weight support in ZeroG reduces lower-limb muscle activity during overground walking — useful for tailoring support levels in therapy.

Fenuta AM, Hicks AL · J Rehabil Res Dev · 2014
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This study measured how dynamic body-weight support in ZeroG changes lower-limb muscle activity during overground walking. Researchers recorded electromyography (EMG) from four muscles — tibialis anterior, medial gastrocnemius, rectus femoris, and biceps femoris — in 13 non-disabled adults as they walked at their preferred speed under five levels of body-weight support (0%, 20%, 40%, 60%, and 80%).

As support increased, muscle activity at heel strike fell significantly — by about 33% on average across muscles, with the largest reductions in the rectus femoris (≈63%), medial gastrocnemius (≈36%), and tibialis anterior (≈26%). Higher support also lengthened the gait cycle, mainly by increasing swing-phase time.

By quantifying how different support levels reduce muscle demand, the findings help clinicians understand and tailor how much body-weight support to use during gait training — enough to enable safe practice without unloading so much that key muscles stop doing their work.

Research

Dynamic weight-assist mobility training in infants and toddlers with cerebral palsy

An early study found that dynamic weight-assistance therapy was feasible for infants and toddlers with cerebral palsy — and improved gross motor function in four of five children.

Prosser LA, Ohlrich LB, Curatalo LA, Alter KE, Damiano DL · Dev Neurorehabil · 2012
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This early study tested a novel dynamic weight-assistance technology — the same class of dynamic body-weight support used by ZeroG — for very young children with cerebral palsy. Using a single-subject research design with 6-week baseline, intervention, and treatment-withdrawal phases, five infants and toddlers with CP attended therapy that used dynamic support to let them practice motor skills beyond their current abilities.

Engagement was high: average attendance and engagement rates exceeded 90%, showing the approach was feasible and well tolerated in this very young population. After the intervention, four of the five participants made gains in gross motor function that exceeded their expected rate of development.

The findings offered early, preliminary evidence that dynamic body-weight support can help even infants and toddlers practice — and progress in — functional movement, supporting its use in pediatric rehabilitation.

Research

ZeroG: Overground gait and balance training system

The first peer-reviewed evaluation of ZeroG's dynamic body-weight support and overhead tracking, establishing the performance of the system.

Hidler J, Brennan D, Black I, Nichols D, Brady K, Nef T · J Rehabil Res Dev · 2011
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This paper introduces ZeroG, an overground body-weight support system that allows patients with severe gait impairments to practice gait and balance activities in a safe, controlled manner.

The unloading system provides up to 300 lb of static support and 150 lb of dynamic (constant-force) support using a custom series-elastic actuator mounted to a driven trolley that rides along an overhead rail. The authors evaluated the performance of both the unloading system and the trolley-tracking system using benchtop and human-subject testing.

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Research coming soon.

We're compiling the peer-reviewed evidence behind our technology — check back shortly.