1. PKMAS and Zeno Walkway System ProtoKinetics LLC Michael Rowling Kristen Larsen www.protokinetics.com

2. Zeno Hardware Technical Specifications 16 levels of dynamic pressure
0.4’’ square sensors on 0.5’’ centers over sensing array
Dual control sensing elements avert false firing
Three Layer Walkway (0.5’’ height)
Base Layer:
-Flexible linoleum with sloped rubber edging facilitates
smooth transitions onto walkway
Middle Layer:
-Protects sensing technology and circuitry
-Reduces curling of the edges
Top Cover:
-Carpet or flexible linoleum with a variety of patterns
-Velcro edge lining secures layers
Customization: match your lab and research needs
Top cover Pattern
Size 8’
12’
14’
16’
20’
26’ 2’ x 4’

3. Zeno Walkway Setup The 2x16 Zeno mat ships in two boxes.
To setup, first roll out the base layer. Then, roll the sensing carpet out with its circuitry fitting into the base. Complete the walkway by securing the top cover in place with its Velcro edges.
To record a walk, use the Zeno box to connect the walkway to the USB port of the computer with PKMAS software installed.

4. Powered by PKMAS Software
Data collection, processing, and analysis software for:
Zeno Walkway
GAITRite platinum series
Encryption key for data security
Multiple pass trials
Minimum volume ellipse bounded footprints
114 primary and computed gait parameters
COP, COMe, step/stride length, foot area, Coefficient of Variation, Left/Right Ratio, cadence, Toe In/Out angle, Path Efficiency
Export gait measurements
Develop Custom Protocols
Walking (with or without dual tasking), TUG, Figure 8’s, FSST, 360° turns, Fukuda Step Test, side stepping, unilateral and bilateral stability

5. Syncing Push-button switch
User marks change of event during recording for quick referencing during analysis
Binary square pulse
Zeno Interactive Module
Use with PKMAS for lights and tones
Built-in random delay features
Ideal for gait initiation
Wireless XBEE input
Inclinometer Devices
Cup & Tray Dual Tasking
Track upper body movement( X, Y)
Internal Metronome
40 BPM-208 BPM
Sync Output (3.5mm Stereo Jack)
TTL Pulse
Logitech Video Camera
1-2 cameras
Synchronized video and footfalls

6. PKMAS Angles Projection Angle of Stride
Vector from heel of one foot to consecutive heel of the same foot (degrees)
Useful in non-linear walking to describe movement direction at any point in time
PKMAS step length considers direction of progression for optimal measurement accuracy
Minimum Volume Bounding Ellipse
Computes ellipse with the smallest area that wholly encloses all sensors of a footfall
Ellipse’s major axis used to determine foot placement angle
Reliable over gait patterns with anomalies
Ellipse theory considers the shape of entire footfall
incomplete and asymmetric footfalls will display less error than competitive techniques

7. Center of Mass Estimated
Exclusive COMe algorithm based on velocity and direction of pressure sensor activation
Algorithm tested in varying conditions against state of the art motion capture systems at two major US research institutions
COM data (red) plotted against PKMAS COMe calculation (green).

8. Gait Measurements
Display Gait Measurements table in PKMAS for statistical and step by step quantitative values
Easily navigate from any footfall measure to the first or last contact time on walkway
Measures include:
Toe/Heel Location
Foot length, width, area
Step/stride time, length, width
Stance, swing, gait cycle
Stance, swing, single/double support percent
Velocity, cadence
Foot angle, direction of progression
Left to Right Ratios

9. Exporting to Excel
Export directly from Gait Measurement table to effortlessly create plots
Graphing the Left/Right Ratio provides a meaningful depiction of asymmetrical variables

10. The ProtoKinetics Advantage
PKMAS Platform
Advanced and Accurate Measurements
Verified, Validated and Certified
Capable of processing many walk files that competitors cannot
User-friendly, Precise Documentation
Continuous software growth
Excellent Technical support
Testing Protocols
Incorporate new measurements
Multiple passes and turning trials
Zeno Interactive Module
Zeno Walkway
16 levels of pressure
Protected sensing technology
Available in 2’ and 4’ widths
Certifications
ISO 13485:2003
CE Marked