Isokinetic Systems
Biodex isokinetic systems represent the gold standard in objective strength assessment and rehabilitation. Trusted by professional sports teams, leading physiotherapy clinics, and research facilities worldwide, these systems provide the precise, reliable data you need to evaluate performance, guide treatment decisions, and document patient progress.
Accommodating Resistance Throughout The Entire Range
Unlike traditional isotonic exercise with fixed resistance, Biodex isokinetic systems provide totally accommodating resistance that adjusts automatically throughout the entire range of motion. This intelligent resistance responds to:
Changes in musculoskeletal leverage as the joint moves
The muscle’s force-generating capacity at different lengths
Patient fatigue, reducing resistance to enable completion of the full movement
Pain levels, immediately decreasing load to encourage safe movement
This accommodating resistance ensures maximum muscle loading at every degree of movement whilst providing inherent safety for your patients.
Comprehensive Assessment Capabilities
Biodex isokinetic systems enable you to objectively evaluate:
Strength across multiple joint angles and speeds
Endurance with fatigue-resistant protocols
Power for return-to-sport assessment
Range of Motion with precise measurement
Bilateral Comparison to identify deficits and asymmetries
Multiple Operating Modes
Isokinetic Mode
Speed selection from 20 to 450 degrees per second
Independent agonist/antagonist speed settings
Torque capability of 650 foot-pounds
Preset range selection for isolated joint training
Objective measurement of maximal and submaximal work
Eccentric Mode
Advanced training with preset recruitment windows
Patient-controlled safety cancellation
Submaximal work focusing on deceleration
Progressive loading for tendon rehabilitation
Passive Mode
Concentric or eccentric contractions for any muscle group
Maximum eccentric torque thresholds for safety
Controlled pause for static stretching or muscle recruitment
Passive limb movement through preset ranges
Ideal for warming up, joint lubrication, and early rehabilitation
Isometric Mode
Evaluation and training at specific joint angles
No joint movement, safe for early post-surgical use
Objective measurement of force production
Available Systems
System 4 Pro™
The flagship system combining maximum versatility with precision engineering. Features a 360-degree rotating positioning chair for optimal patient stabilisation and accommodation of diverse exercise positions.
System 4 MVP™
A streamlined solution offering core isokinetic functionality with an efficient footprint for space-conscious facilities.
System 4 Quick-Set™
Designed for high-volume clinical environments where rapid patient transitions are essential.
Advantage BX™ Software
Advanced reporting and analytics software that enables comprehensive data management, normative comparisons, and detailed documentation of patient outcomes.
Clinical Applications
Return-to-play assessment and training for professional athletes
Post-surgical rehabilitation following ACL reconstruction, total joint replacement, and rotator cuff repair
Occupational assessment and work conditioning programmes
Research and academic studies requiring objective biomechanical data
Medical-legal documentation of disability and functional capacity
The Advantages of Isokinetic Technology
Safety: Accommodating resistance minimises injury risk
Efficiency: Maximum muscle loading throughout the entire range of motion
Reproducibility: Controlled speed ensures consistent testing conditions
Velocity Spectrum Training: Training at functional speeds with physiological carry-over
Objective Documentation: Reliable, valid data for assessment and progress tracking
Minimal Muscle Soreness: Superior to other exercise modalities
Biodex isokinetic systems provide the objective evidence you need to guide clinical decisions, demonstrate progress, and achieve superior patient outcomes.