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OPTOGAIT The Modular System


What is OptoGait



OptoGait is a system for optical detection made by a transmitting and a receiving bar. Each one contains 96 LEDs communicating on an infrared (visible) frequency with the same number of LEDs on the opposite bar. Once positioned on the floor or on the treadmill, the system detects the interruptions of the communication between the bars - caused by the patient’s movement - and calculates the duration and position. During the execution of a running, gait or series of jumps test, the contact and flight times can be measured with an accuracy of 1 thousandth of a second and the position of the interrupted LEDs with a space resolution of 1,041 cm. Starting from this basic data, the dedicated software measures in real-time a series of crucial data for the movement analysis. The absence of mechanical moving parts ensures a long life, accuracy and repetition possibilities.

Quantity and Quality Assessment

OptoGait acquires numerical parameters in real-time for gait, running and jump tests that can be viewed immediately. The easy to read report contains all data, and asymmetries between the two legs are highlighted instantly. OptoGait does not only detect the numerical data, but, via small cameras, which can be freely positioned, it allows the user to acquire images of carried out tests, synchronizing them perfectly with detected events. Without the need for any further synchronization between hardware and cameras, the numerous benefits of cross verification of data and images can be fully used. A more detailed video analysis can be had by further utilizing the dedicated utility (angle, distance calculus, graphic tools, etc.).




The modular system

In this configuration, OptoGait allows to carry out :

  • Gait Tests can consist of simple exercises (moving from A to B), but also of more complex ones, such as ‘roundtrip’ or walking backwards. They can be more complex, if needed, adding obstacles (e.g. plastic cones) or actions to be carried out between the various gait phases (sitting down and getting up before coming back, for example) or simultaneously. Dual task and obstructive task walking, can be easily measured here.
     
  • Running Tests, just like gait tests, can be carried out either starting from a stand or running, to analyze the various phases, how the incremental weariness acts on the patient at each round installing the system on a track, measuring the time of a change of direction and the following acceleration, and so on... (see Run Report below)

Thanks to the practical and innovative assembling system using caps, the modular system is assembled in a few minutes and does not require cables to connect the bars or further net adapters. The length goes from a minimum of 2 meters to a maximum of more than 100 meters.

OPTOGAIT Treadmill System

What is OptoGait



OptoGait is a system for optical detection made by a transmitting and a receiving bar. Each one contains 96 LEDs communicating on an infrared (visible) frequency with the same number of LEDs on the opposite bar. Once positioned on the floor or on the treadmill, the system detects the interruptions of the communication between the bars - caused by the patient’s movement - and calculates the duration and position. During the execution of a running, gait or series of jumps test, the contact and flight times can be measured with an accuracy of 1 thousandth of a second and the position of the interrupted LEDs with a space resolution of 1,041 cm. Starting from this basic data, the dedicated software measures in real-time a series of crucial data for the movement analysis. The absence of mechanical moving parts ensures a long life, accuracy and repetition possibilities.

Quantity and Quality Assessment

OptoGait acquires numerical parameters in real-time for gait, running and jump tests that can be viewed immediately. The easy to read report contains all data, and asymmetries between the two legs are highlighted instantly. OptoGait does not only detect the numerical data, but, via small cameras, which can be freely positioned, it allows the user to acquire images of carried out tests, synchronizing them perfectly with detected events. Without the need for any further synchronization between hardware and cameras, the numerous benefits of cross verification of data and images can be fully used. A more detailed video analysis can be had by further utilizing the dedicated utility (angle, distance calculus, graphic tools, etc.).

Gait and Run Analysis

Positioned on the side bars of any treadmill (simply leaned on or permanently fixed with adhesive-tape), OptoGait becomes a portable lab for small spaces and with reduced costs. The system is compatible with the wide majority of treadmills and no synchronization is necessary to start and carry out a test.

Gait Analysis' data provided in real time are:

  • Stance phase: The stance phase is the supporting phase of each gait cycle. It begins with the contact of the heel and finishes with the set off of the tip of the same foot. It is therefore the time between the first and the last contact of two consecutive supports of the same foot. It is also presented as a percentage of the total gait cycle.
  • Swing Phase: The swing phase begins when the tip of the foot leaves the ground and finishes with the contact of the heel. It is therefore the time between the last contact of the first support of the foot and the first contact of the following support. It is expressed in seconds (sec) and as a percentage of the gait cycle of the same foot. The swing time of one foot corresponds to the single support time of the other foot
  • Single Support: This is the time between the last contact of the current support and the first contact of the following support of the same foot, i.e. the time when only one foot touches the ground. The single support corresponds to the swing time of the opposite foot. It is expressed in seconds and as a percentage of the total gait cycle time
  • Total Double Support: This is the sum of two partial double supports defined DS1 and DS2
  • Step Time: This is the time between the first contact of a foot and the first contact of the opposite foot
  • Initial Double Support: This is the first Double Support Time
  • Terminal Double Support: This is the second Double Support Time
  • Step Length: distance between the tip (toe) of two subsequent feet or the distance between the heel of two subsequent feet
  • Gait cycle: time between the first contact of two consecutive steps of the same foot
  • Stride Length: distance between the tip of two subsequent footprints of the same foot or the distance between the heel of two subsequent footprints of the same foot
  • Speed: Average speed of a single step
  • Acceleration: Speed variations of the two preceding steps
  • Cadence: Rhythm expressed in steps per second
  • Total distance: progressive distance walked/run by a patient
  • Contact Phase: the time between the first contact of the heel and the complete support of the foot; the percentage indicates the value with respect to the total contact time
  • Flat Foot: the time the foot completely touches the ground; the percentage indicates the value with respect to the total contact time
  • Propulsive phase: the time between the lifting of the heel to the complete set off of the tip of the foot; the percentage indicates the value with respect to the total contact time
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