275 – Dynamometers for Low Hand Grip Strength Measurements

This application note reports the performance of BIOPAC hand dynamometers SS25LA and TSD121C at grip forces below 1 kg. These devices are specified to register clench force range 0-50 kgf. Performance was measured using the MP200, MP36/MP36R, and MP45.

An alternative for low grip strength measurements is a Response/Hand Force transducer—SS56L, BN-CLENCH, or TSD114-MRI—which is configured with a high sensitivity pressure transducer. Subjects can squeeze a bulb by hand (or apply pressure via foot, thigh, etc.) to indicate a response. The device can provide reduced hysteresis and improved sensitivity at low levels.

Associated Applications

  • Exercise Physiology - Examine ventilation, oxygen uptake, carbon dioxide production, biopotentials, temp., and biomechanical signals simultaneously. Record wirelessly with BioNomadix.
  • EMG: Electromyography - Record surface, needle, and fine wire EMG—or wireless EMG with BioNomadix. Use real-time integration tools for immediate analysis or use automated EMG analysis routines.
  • Biomechanics - Use BIOPAC equipment for gait analysis, goniometry, ergonomics evaluation, range of motion, EMG, Remote Monitoring or to interface with third-party equipment.

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