Exoskeletons Used by Port Employees

Logistics and cargo handling activities carried out in the port environment are largely managed manually by workers in order to ensure the required operational standards. With the aim of making their employees’ tasks easier, more efficient and ergonomic, the Autorità di Sistema Portuale del Mar Tirreno Settentrionale (Port System Authority of the Northern Tyrrhenian Sea, AdSP MTS) and the Compagnia Portuale di Livorno (Livorno Port Company, CPL), together with IUVO, a spin-off company of the Scuola Superiore Sant’Anna (Pisa), and Comau have conducted a pilot study – among the first carried out in Europe and in the world – for the adoption of wearable MATE-XT and MATE-XB exoskeletons designed by the 2 companies. MATE-XT helps to reduce the muscle load of the upper limbs during static or repetitive activities, which require workers to keep their arms raised for extended periods of time, while MATE-XB relieves the muscle effort of the lumbar area when handling loads.

The field tests conducted by IUVO and Comau, in collaboration with the port institutions, were carried out over a period of 6 months with 12 workers employed in the port area of Livorno who wore MATE exoskeletons during their daily work. During this period, the positive effects obtained at both a physical and operational level were measured and validated.

Manual, non-automatable activities such as loading-unloading goods, moving heavy loads along the dock, lashing or unlashing containers on board ships can be extremely tiring for the operators. The support of wearable exoskeletons, such as MATE-XT and MATE-XB, helps reduce physical stress and the risk of triggering potentially disabling musculoskeletal diseases over time. To confirm this, in the initial phase of the project, IUVO and Comau conducted accurate instrumental measurements on the muscle activity of the workers. These same workers were asked, through the compilation of dedicated questionnaires, to directly assess the sensation of fatigue perceived with the use of MATE exoskeletons. The end results have been impressive. Not only did the operators warmly embrace these new technologies, they have recognized the positive impact the exoskeletons can have on their activities and performance. In line with data previously collected and verified by IUVO and Comau, together with companies that have been using this technology for several years, it has been shown that the MATE-XT upper limb exoskeleton and the MATE-XB lumbar device can reduce the effort of operators by up to 30%.

The pilot study and the positive results achieved testify to the commitment of the AdSP MTS and the CPL in promoting the health and well-being of port operators, as well as in experimenting with cutting-edge technologies capable of making the working environment safer and more comfortable.

Duilio Amico, CEO of IUVO and Head of Wearable Technologies at Comau, explained “The study conducted together with important institutions such as AdSP MTS and CPL is one of the first in Europe and in the world that aims to evaluate the effect of exoskeleton technologies for the improvement of ergonomics and safety of workers in the port system. This project confirms IUVO and Comau’s commitment to creating an ecosystem for the development and adoption of wearable robotics technologies that promote the well-being of workers.”

Nicola Vitiello, full professor at the Scuola Superiore Sant’Anna and co-founder of IUVO, underscored, “The pilot study launched in Livorno’s sea port was an important opportunity to continue testing and perfecting the wearable robotics solutions developed with Comau directly in the field, in new applications and sectors. The benefits and enthusiasm experienced by those who wear MATE exoskeletons to carry out their tasks are further confirmation of how this innovative technology can be successfully applied in different areas in the future, significantly reducing physical fatigue and improving people’s quality of life.”

Luciano Guerrieri, President of the Autorità di Sistema Portuale del Mar Tirreno Settentrionale, said, “Safety and the protection of workers’ health are fundamental for our institution. The constant attention to these aspects, combined with openness and interest in innovation, has allowed us to be one of the first port systems in the world to test these cutting-edge technologies, with the aim of reaffirming and improving our commitment to the safety and well-being of our employees.”

Enzo Raugei, Chairman of the Compagnia Portuale di Livorno, added, “The well-being of our workers is central to the Company. We are thrilled to have been at the forefront of implementing innovative technologies in our industry and to have been the first to understand their use in the port business. The safety and well-being of our members and employees is a top priority for our cooperative, and this initiative demonstrates our continued commitment to ensuring it.”

Workforce Wearables: Comfort and Mobility

A few years ago, Matthew Marino of HeroWear worked with a warehouse stocker named John who had injured his back and was looking to get back to full duty. John’s job was important to him because he had a family to support. Working as a morning stocker, he was on his feet for 8 hours, pushing and pulling pallet jacks full of goods, constantly lifting, bending, and reaching, to stock his aisles before heading home to help his son. It’s no surprise that John became one of millions of Americans who missed time at work because of back pain.

John agreed to try using a back-assist exoskeleton while on modified duty. Matthew trained and supported him throughout his transition from modified to full duty. He used the exoskeleton until he no longer had any work restrictions from his doctor, and he was approved for full-duty work. He said he could feel the exoskeleton reducing strain in his back when he was bending and lifting. The assistance truly worked. Then one day John gave back the exoskeleton. Even though he said it worked, he didn’t want to use it anymore. Why?

While there was no doubt that the exoskeleton helped, John said it prevented him from doing his job and moving the way he wanted. He couldn’t get close to the items he needed to reach because the exoskeleton interfered. He couldn’t move in tight spaces and in between pallets because the exoskeleton stuck out too far around his body and got caught on shrink-wrap.
It helped relieve back strain, but that didn’t matter. Because it got in the way, John was done with the exoskeleton.

John’s story is a powerful lesson: if you are thinking about adopting new technology or new wearables for your workforce, physical assistance is not the only important factor. Whether it’s an exoskeleton that provides physical support or sensors that promote a safer workday, if wearables prevent workers from doing their job how they want to, adoption will be an uphill battle. That’s why comfortable workforce wearables that don’t restrict freedom of movement are more practical for many industries, especially fast-paced logistics environments. Logistics and warehouse workers need to be able to quickly adapt to any challenges they face to get their job done, which means they need full mobility, and zero distractions.

Lightweight, soft exosuits that are built to comfortably fit any body type and be worn all day have incredible potential to help workers who frequently bend and lift. Those are also the kind of workers that need protection. The wear and tear from the frequent forces and awkward postures their spines must endure during all that bending and lifting really adds up physically – not only over the course of a single day, but over the course of a career.

The good news is there are many new wearables for logistics companies wanting to find ways to protect their employees without sacrificing production. Companies have started using workforce wearables, including rigid exoskeletons or “soft-shell” exosuits, to lower the forces that increase the risk of chronic pain. Geodis began using passive exoskeletons for back support in 2017 and DHL published a report saying that soon delivery people “will be using exoskeletons to safely lift heavy weights.”

These companies and many others are using exoskeletons and exosuits that are already on the market and have been scientifically proven to reduce back strain, fatigue, and risk of injury from bending and lifting. But as we learned from John’s story, it’s critical that they are comfortable and don’t restrict freedom of movement. Thankfully, there are exosuits being implemented that are specifically designed to provide assistance without impacting mobility or comfort.

When it comes to the sensor side of workforce wearables, Walmart and Toyota are testing devices that alert workers who are engaging in risky movements. These devices collect data to give employers insights into which jobs, tasks or workers have the highest levels of injury risk, so that workplace design or equipment changes can be made to improve worker safety. They also provide feedback to workers to train them to avoid risky postures and movements. The testing found a reduction in injury risk across North America using the sensors.

But while exosuits must give user’s freedom of movement to be adopted, sensors have their own user-adoption hurdles: the “creepy factor” that some workers may feel toward data collection – including privacy and workplace-surveillance concerns. These challenges are being addressed by sensor providers and companies through privacy features, proper training, and awareness among workers.

The rise of workforce wearables is exciting because they could help fight a major problem: work-related musculoskeletal disorders (WMSDs). OSHA said WMSDs are frequently the cause of lost or restricted work time and the annual cost from back pain domestically is $253 billion, according to the Bone and Joint Initiative. Amazon has started to direct financial resources to combat WMSDs with its WorkingWell program and Jeff Bezos has said that the company needs to tackle workplace injuries. They had reason to emphasize warehouse safety: Amazon recorded 5.6 injuries per 100 workers in 2019, while the (still-too-high) national average for the warehousing and storage sector was 4.8.

Workforce wearables can help protect workers who may be at-risk of suffering WMSDs, which could turn into chronic pain. But a major hurdle in the “War on WMSDs” is enthusiastic buy-in from the workers to properly use the wearables. We’ve learned from stories like John’s that buy-in is going to be a whole lot easier if the wearables are comfortable and maintain mobility. To enjoy the assistance of workforce wearables, workers must be willing to wear them. When they feel comfortable using a wearable and quickly see the difference it makes by improving their quality of life, the way physical work is done can change forever.

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