System 4 Pro™

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Comprehensive testing and evaluation software

Advantage Software 4.X features:

General System

  • LCD touch-Screen Controls with Graphic User Interface
  • On-demand audio and visual aids demonstrate exercise and test patterns
  • Windows 7 platform using Microsoft Access database
  • Network ready – with data synchronization
  • Easy to follow, onscreen wizard guides beginners
  • Advanced features provide flexibility for more experienced users
  • Simulation mode allows full software functionality to teach, review data, enter patient information, print reports from another computer
  • Easy change between English and Metric Units
  • Available in 7 languages: English, German, French, French Canadian, Japanese, Russian and Italian
  • AVI – action video instructions for positioning setups
  • Customizable Facility Setup for "facility default" settings for rest periods, isometric contraction times, scoring values as well as facility name on reports
  • All reports can be printed as PDF’s for EMR attachment.

Biofeedback Screen

  • Biofeedback mode for quick, simple, non-specific patient or protocol operation
  • End by: work, time, reps or fatigue
  • Statistics for: Peak Torque, Total Work, velocity and % Coefficient of Variation
  • Display: Torque vs. Position, Torque vs. Time, as well as positive and negative torque for eccentrics
  • Bar graphs display with independent values for each away and toward motion
  • Active real-time Pie Chart to show percent completion
  • Versatile scaling options: Manual scale setting or Auto scaling setting
  • Complete playback history to view most recent set from beginning to end

Range of Motion Setting

  • Auto ROM setting – sets ROM to a recalled value from previous test or exercise session
  • Mirror ROM setting – sets ROM to saved value of opposite limb
  • Confirm ROM setting –assures patient can complete desired ROM
  • Gravity Correction to automatically compensate for gravity in effected motions
  • Anatomical Reference

Curve Analysis

  • Allows user to view test data on screen in various formats and very specifically
  • Cursor overlay to view specific data at a specific point on a curve or in-between two points
  • Zoom function allows closer evaluation of curve quality
  • Overlay up to 4 curves to compare performance data and curve characteristics
  • Curve legends clearly delineate each rep
  • Choice to display filtered or non- filtered data
  • Choice to display windowed or non-windowed data
  • Toggle between English and metric units
  • Display torque curves against time, position and velocity
  • Rep with peak torque and total work in either direction clearly identified
  • Complete curve information for peak torque, work, power and time to peak torque
  • Annotate curve display and printout
  • Log all data to file to export
  • Curve analysis data log file clearly delineated for each data point as time (msec), Torque, Position and Velocity for file export

Patient Selection/Entry

  • Add, delete and edit patient data on one screen
  • From patient selection list – select patient and go directly to repeating test or exercise session, or to print a report for a specific test

Protocol Features

  • Favorites – Preserve the on-board, pre-installed protocols, while proving the user a place to retain all "custom" protocols they may create.
  • Select, create or edit test or exercise protocols on one screen
  • Select from 35 different joint, pathology clinically documented default protocols
  • Specific protocol available to conduct mixed H/Q Ratio Test and Multiple Angle Comparison Test for hamstring injury prevention and rehabilitation.
  • Assign unique names to all protocols
  • Protocols can be created for Isokinetic, Isotonic, Isometric, Reactive Eccentric or Passive mode
  • Protocols can be concentric or eccentric contraction specific
  • Protocols can be setup to end by: reps, time or worklink protocols for all modes for automated multi-mode operation through all phases of rehab.
  • Pathology specific linked protocols for a complete rehab session of passive, ranging through to strengthening.


  • Six unique report formats – Print or PDF

- Exercise Summary Report – a graphical representation of the patient's status, progress and outcome over time. Plot Strength, Pain, ROM, and other user definable measures from the patient's test and rehab history.
- Graphical Evaluation
- General Evaluation
- Comprehensive Evaluation
- Progress reports
- Narrative cover letter
- Isomap

  • Graphical Evaluation is a simple report that uses color graphics to depict comparisons of peak torque between involved and uninvolved muscle groups, as well as to population normative values Report provides ability to type specific comments; a legend facilitates understanding.
  • General Evaluation includes the most commonly requested numeric data to accompany color graphic data depiction. Ability to comment is also available, as is the legend.
  • Comprehensive Evaluation provides data for 19 parameters in addition to a torque curve for each set.
  • Narrative cover letter is a form letter where the user can select certain phrases to describe the patient's performance and rehab status.
  • Progress Reports are available in the graphic, general and comprehensive report format progress report compares performance on one date with another.
  • Isomap reports provide data from a three-speed bilateral report.
  • The Isomap report illustrates using color intensity where the patient is having difficulty in relation to ROM, speed and contraction.

Database Manager

  • The enhanced Data Export Utility allows users to download all patient test data at one time, including both calculated and raw data.  Choose from .csv or .txt file formats for calculated data.  Raw data is exported as a .txt file, compatible with popular third party research programs, such as MatLab, LabView or BioPac.
  • The Rehab Exported Data Parser facilitates the process of working with exported data. The Data Parser, in the form of an Excel macro, has preformatted header files making it simple to convert .csv files into a report format.
  • Enhanced patient Database sorting – simply search by entering a name, portion of a name or initial.
  • Includes the ability to setup unique patient databases so that patient's /test subject can be separated. A popular feature when a System 4 is used in research.


Normative Data

The System 4 includes normative data values for peak torque to body weight ratios, as well as agonist to antagonist rations for most commonly referenced joints and protocols.

Expanded and updated isokinetic normative data is available for multiple joints including knee, ankle, hip, shoulder, elbow, and wrist from pediatric to adult, ages 5-83.

Advanced Applications
  • EMG Analog Interface Software
    Through the remote access port is an output of analog signals of velocity, torque and position data in real-time directly from the motor control Digital Signal Processor (DSP). In addition to the real-time data, a synchronization pulse is issued whenever the real-time data is updated. The synchronization pulse can be used by the monitoring equipment to know when the real-time data output has changed. Output Frequency, or update rate up to 2000 Hz. Four scaling values allow for optimal signal resolution.
  • Researcher's Tool Kit (optional)
    The System 4 Researcher's Tool Kit is a proprietary software package that provides the advanced user with customized motor control, movement tracking and data analysis.

- Front Panel Control Emulation - full set of controls as available on the front panel, with the addition of finer adjustments such as setting speed to any increment of 1 deg/sec, and setting torque to any increment of 1 ft-lb.

- Additional Control - for data monitoring and system controls, only previously used by the System 4 application.

- Remote Access Port Control - for the analog signal output, defines the scaling of velocity, torque, and position. In addition, the update frequency rate can be specified, along with the output mode, for example, the mode can be set to output the analog signals only when the System 4 is in an active state (START, not in Hold or Idle).

- Data Download for Motion Control - a user provided data file of positional data can be downloaded to System 4, and executed to follow a custom pattern of motion Tools such as MATLAB (from The MathWorks), MathCad (from MathSoft) or Prism (from GraphPad Software) can be used to generate these pattern files.

* Reference document: Harbo T. Brincks J. Anderson H (2012) Maximal isoknetic and isometric muscle strength of major muscle groups related to age, body mass, height and sex in 1978 healthy subjects. Eur J Appl Physiol 112-267-275

For a complete listing of new normative data go to


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