Study on Decompression Backpack with Anti Gravity SystemTM: Protecting Spine and Delaying Fatigue

Conducted by Guangzhou Sport University, Engineering Research Center

Guangzhou Sport University released a test result on the patented technology Anti Gravity SystemTM (AGS) in 2016. The AGS patented technology is similar to a suspension system integrated into a backpack. In response to the motions that are generated, this design is slightly springy.

The test indicated that AGS technology resulted in a slower rate of cervical back muscle fatigue, quicker muscle recovery, better stability and improved posture when compared to a traditional backpack without AGS technology. The reason for this is because AGS backpack is able to actively compensate dynamic load.  

Report Conclusion

The decompression backpack based on the concept of Anti Gravity SystemTM shows to be effective in protecting the user's spine and in delaying cervical back muscle fatigue. We could conclude that the AGS backpack under the appropriate pace can potentially reduce the risk of musculoskeletal injuries and muscle fatigue associated with carrying heavy backpack loads while reducing the metabolic cost of loaded walking. - Guangzhou Sport University

Test Method

Biomechanical and physiological measurements were taken from 12 subjects (19 +/- 1.8 years old) who did no strenuous exercise two days prior to the test and are in healthy conditions (no acute or chronic illness). Two trials were conducted two days apart from each other. One was the control group where the participants wore a backpack with no AGS technology. The second group was the test group where the participants wore a backpack with AGS technology. For each trial, the participants carried the same amount of weight (8-10% of their body weight) and walked on a treadmill at 4.5km/h for 30 minutes. The sEMG measurement of the neck extensor, trapezius muscle, latissimus dorsi, and erector spinae muscle were taken along with gait and kinematics analysis. 

Equipment used were: Vicon three-dimensional motion capture and analysis system (Vantage5), German Kistler three-dimensional dynamometer system (Kistler 9281 ca), German Zebras 6m plate type sole pressure test system (zebras FDM system) and 8-channel electromyography (MEGA6000 for sEMG). 


Why AGS?

FX Creations recognized the problem associated with heavy backpacks and hence has been working towards a solution since 2014. At first an AGS shoulder strap was invented. The shoulder strap is made from a highly elastic material so that when the user walks, a springy motion occurs. Based on user feedback, the shoulder strap made the carrying load feel lighter. Over time FX Creations incorporated that suspension idea into their backpacks, hoping to alleviate the problem of heavy backpacks.