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AMTI Tandem Instrumented Treadmill
The AMTI Tandem Instrumented Treadmill features two independent force-measuring belts arranged front-to-back, enabling simultaneous measurement of both feet during natural walking and running. Each belt is equipped with a six-component force platform that captures three forces and three moments at up to 10,000 Hz, providing researchers with the detailed biomechanical data needed for gait analysis, rehabilitation studies, and sports performance research.
What is the AMTI Tandem Instrumented Treadmill?
The AMTI Tandem Instrumented Treadmill is the most popular force-sensing treadmill in biomechanics research, featuring a unique front-to-back (tandem) split belt design. Unlike conventional side-by-side split belts, the tandem configuration eliminates gait alterations caused by widened stance — subjects walk and run naturally, while two independent six-axis force platforms capture complete bilateral ground reaction forces in real time.
Ideal for studying gait under level, uphill, and downhill conditions, the treadmill supports speeds up to 20 km/h and inclinations up to 25% grade. AMTI’s StrideWorks software automatically separates left and right limb forces and streams data directly to all leading motion capture software via USB — no additional hardware interface required.
Key Features
- Front-to-Back Tandem Belt Design: Only 3 mm clearance between belts with precise speed synchronization — subjects walk naturally without widening their stance or straddling a center gap.
- Dual Six-Axis Force Platforms: Each belt is supported by a fully integrated AMTI force plate measuring Fx, Fy, Fz, Mx, My, Mz — with 8800 N vertical capacity and 300 Hz natural frequency.
- StrideWorks Software Included: Automatically transforms front-back force data into left/right limb segregated GRFs in real-time, streaming directly into your motion capture software via USB.
- Adjustable Speed and Inclination: Belt speed 0–20 km/h; inclination 0–25% grade (14°). Reversible belts for both uphill and downhill protocols.
- Ships Fully Assembled: Arrives complete with all software pre-loaded on an AMTI-supplied PC, freestanding with caster wheels for easy repositioning within your capture volume.
- Above Ground or In-Floor Installation: Available as a standard above-ground model (with stairs) or as a recessed pit/in-floor installation flush with the surrounding floor surface.
- Seamless Motion Capture Integration: Simple digital USB connection compatible with all leading motion capture software packages out of the box.
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Technical Specifications
| Force Plate Type | Dual integrated six-axis force plates |
| Vertical Force Capacity | 8800 N (2000 lb) |
| Horizontal Force Capacity | 4500 N (1000 lb) |
| Force Plate Natural Frequency | 300 Hz (Fx, Fy) |
| Linearity | ±0.2% full scale output |
| Hysteresis | ±0.2% full scale output |
| Working Surface (Each Belt) | 75 × 61 cm (30" × 24") |
| Total Working Surface | 150 × 61 cm (60" × 24") |
| Belt Clearance | 3 mm between belts |
| Belt Speed | 0–20 km/h (0–12 mph) |
| Inclination | 0–25% grade (0–14°) |
| Belt Direction | Reversible (forward and reverse) |
| Non-Inclined Belt Height | 30 cm (12") |
| Overall Dimensions | 203 × 114 × 128 cm (80" × 45" × 50") |
| Weight | 400 kg (880 lb) |
| Structure Natural Frequency | 120 Hz |
| Power Requirements | 208 VAC, 3-phase, WYE connected, 20-Amp |
| Data Interface | Digital USB |
| Software | AMTI StrideWorks (pre-loaded on AMTI-supplied PC) |
| Installation Options | Above ground or in-floor (pit) |
Applications
- Gait analysis during walking and running
- Uphill and downhill locomotion studies
- Long-duration fatigue and steady-state movement research
- Sports biomechanics and athletic performance assessment
- Prosthetics and orthotics evaluation
- Rehabilitation research and clinical gait monitoring
Sports and Performance research
Explore All ProductsMarkerless Motion Tracking
Explore All ProductsTandem Instrumented Treadmill Publications
AMTI's instrumented treadmills are widely cited in biomechanics, rehabilitation, and sports science literature. Published studies span bilateral ground reaction force measurement, gait adaptation under inclined conditions, split-belt locomotor adaptation, prosthetic limb evaluation, and clinical rehabilitation protocols.
What is the AMTI Tandem Instrumented Treadmill and what is it used for?
The AMTI Tandem Instrumented Treadmill features two independent force-measuring belts arranged front-to-back, enabling simultaneous measurement of both feet during natural walking and running. Each belt independently measures six force and moment components for complete gait biomechanics analysis.
What research applications is the AMTI Tandem Instrumented Treadmill suited for?
The AMTI Tandem Instrumented Treadmill is suited for gait biomechanics, rehabilitation, neuromotor research, and sports performance studies requiring accurate bilateral force data during natural locomotion. It is used in clinical and academic research settings.
What distinguishes the Tandem configuration from other AMTI treadmill designs?
The Tandem configuration places the two force-measuring belts front-to-back (in the direction of walking), closely matching the natural stride pattern and making it ideal for studies where side-by-side belt placement is not possible or where more natural gait mechanics are required.
Is the AMTI Tandem Instrumented Treadmill available in Israel with local support?
Yes. NBT Ltd is the distributor of AMTI instrumented treadmills in Israel. Our team provides full local support including installation, calibration, and application training for the complete AMTI biomechanics line.
What software and data acquisition systems are compatible with the AMTI Tandem Treadmill?
The AMTI Tandem Instrumented Treadmill integrates with AMTI's acquisition software and third-party platforms including Qualisys QTM, MATLAB, and LabVIEW, enabling synchronized motion capture and force data collection for comprehensive gait analysis.
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