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    • Arqus Extreme performance
    • Miqus Capture more with less.
    • Miqus video Add video to your mocap system
    • Miqus Hybrid Marker-based and markerless tracking
    • MRI Measure inside & outside MRI scanners.
    • Underwater Motion capture for underwater measurements
    • Compare cameras Side-by-side comparison
    Analysis
    • Online reporting All your reports. Safe in the cloud.
    • Qualisys Track Manager (QTM) User-friendly mocap software
    • Baseball Baseball pitching & hitting analysis
    • Cricket Batting and bowling analysis
    • Cycling Full-body cycling analysis
    • Functional assessment Assessment of various activities and tasks
    • Gait Clinical gait & gait research
    • Golf Full swing & putting analysis
    • Running Full-body running analysis
    • Project Automation Framework Write your own analysis modules for QTM
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    • Mocap suits Our full motion capture apparel range
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    About us
    • Qualisys is a leading provider of precision motion capture and 3D positioning tracking system.

      We have supplied a variety of industries with high-end camera systems and expertise for more than 30 years.

      Learn more about us

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      OCEANS 2023 - US…

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      25

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    • Golf Full swing & putting analysis
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    3rd party integrations
    • EMG Measure muscle activity
    • Eye trackers Combine eye tracking & motion data
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    • Instrumented Treadmills Capture forces with high-end treadmills
    Collapse
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Home / Customer story / Pitching Analysis at Nobuhara Hospital

Nobuhara Hospital

Located in Haze Issai-cho, Tatsuno City, Hyogo, Japan, Nobubara Hospital is a specialized hospital for Orthopedics, Rheumatoid Arthritis, Anesthesiology, and Rehabilitation. A full range of treatment is provided to general patients as well as professional athletes, especially in the field of the shoulder joint, based on 50 years of clinical experience and scientific research.

Since 2002, the Biomechanics Laboratory in the hospital has used the Qualisys motion capture system and recorded baseball pitching for injury prevention and performance enhancement. The group annually measures 50 to 100 baseball pitchers, including professional, collegiate, high school, and youth, with data on 650+ subjects performing a baseball pitch.

What is the aim at the Nobuhara Hospital Biomechanics Laboratory?

 

  • To determine treatment policy based on motion analysis results and clinical evaluation
  • To provide scientific feedback on injury prevention and performance enhancement
  • To extract new knowledge from measured data (big data) and its application to clinical use

 

The motion capture studio at the Nobuhara Hospital Biomechanics Research Laboratory includes an installed regulation-sized pitching mound with a distance of 18.44 m / 60.5 ft between the pitching plate and the home plate. As for system setup, 10 Qualisys 7+ cameras and 2 Qualisys 210C high-speed video cameras are set in an indoor studio.

The studio is 26.5 meters (87 ft) long  and 11.6 meters (38ft) wide with a ceiling height of  3.9 meters (12.8ft). The 7+ cameras perform with such high resolution (12 million pixel) for ample coverage of the entire volume, capturing full body movement, even those attached to the fingers.

Nobuhara Hospital Mocap Studio Setup

Pitching Analysis Method at Nobuhara Hospital

The 3D position data of the infrared reflection marker are measured by the Qualisys motion capture system and then kinematic and kinetic analysis are performed using customized scripts in MATLAB created by the Nobuhara Hospital Biomechanics Laboratory.

 

Using a 16-segment rigid body model, kinematic and kinetic variables during baseball pitching are output, such as marker velocity and acceleration, Joint angle and angular velocity-acceleration, the position of the whole-body center of mass, and elbow and shoulder joint reaction force and torque.

The MotionBuilder software is used to animate and graphically visualize baseball pitching and its kinematic and kinetic parameters aiming for easy feedback to pitchers. Pitchers can improve their pitching biomechanics while understanding the magnitude of force and torque exerted on the elbow and shoulder.

The benefit of the 3D motion capture system

  • Two-way communication of quantitative results among players, coaches, and PTs
  • Feedback on injury prevention and performance enhancement
  • Easy comparison between individual players or between players
  • Kinetic and Kinematic data collection and reporting
Pitching Analysis at Nobuhara Hospital - feature photo

“Using Qualisys motion capture, we have found proper and improper pitching biomechanics for increasing or decreasing the risk of shoulder and elbow pain and injury. To biomechanically prevent pitching-related shoulder and elbow pain and injury for all baseball pitchers, we will continue to research optimal pitching biomechanics.”

Hiroshi Tanaka, PhD
Vice Director of the Institute of Biomechanics, Nobuhara Hospital

 

We want to thank the team at Nobuhara Hospital and Institute of Biomechanics, for sharing their work, and for using their Qualisys system to its full potential!

If you are interested in having your lab featured as a Qualisys customer story, please submit a write up using the form below to share your story with us.

  • Tell us a bit about your company / business
  • Please describe the setup of your motion capture space, including number and type of Qualisys cameras, supplemental Qualisys technology, and any integrations you use in cohesion with your motion capture projects.
  • Describe why & how you use our system (maximum 3000 characters).
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