Mountain biking is becoming increasingly extreme, with higher speeds and rougher terrain. But while bicycle technology is advancing rapidly, the strain on riders’ brains has often remained an unknown factor. A new helmet sensor called “HIT Connect” now provides objective data on forces acting on the head for the first time—and is designed to warn of the hidden dangers of concussions.

The insidious nature of head injuries in cycling, particularly in high-speed disciplines like downhill or enduro, lies in their delayed onset: symptoms such as dizziness, headaches, or cognitive lapses often don’t appear until hours after a crash. All too often, riders get back on their bikes immediately after a crash because they feel uninjured at first. It is precisely this dangerous guesswork that the technology company HIT aims to put an end to with its new “HIT Connect” sensor.

How the technology works

The system consists of a small, inconspicuous sensor that is attached to the back of standard helmets. Equipped with high-precision accelerometers, the device records both the linear G-forces and the rotational forces acting on the head while riding. The collected data is transmitted to an accompanying smartphone app. There, a simple traffic light system (green, yellow, red) warns of particularly severe individual impacts. Thanks to integrated GPS, it is even possible to track exactly on a Map which sections of the route experienced the greatest stresses.

The underestimated danger of chronic stress

The system’s biggest innovation, however, is the monitoring of so-called cumulative—that is, accumulating—forces. Even without a serious crash, repeated jolts on rough trails take a heavy toll on the brain. According to the developers’ research, subtle cognitive impairments can occur in adult riders starting at a total load of about 300 G-forces. Balance, spatial awareness, and reaction time decline, which drastically increases the risk of serious crashes. Pro downhill riders like Reece Wilson are already using the sensor to pinpoint exactly when the brain is fatigued by this accumulation of small impacts.

Decision-making aid rather than medical diagnosis

The developers emphasize a key message: The HIT Connect is not a medical device and does not diagnose concussions. Its purpose is to shed light on the gray area following a crash or a long day of riding. Where riders previously had to rely on their deceptive gut feeling, the system now provides objective facts.

More information about the product at hitrecognition.com