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Updated: Feb 11, 2026

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[Development of self-generating lower body negative pressure device].

Chang-bin Yang1, Xi-qing Sun, Yong-chun Wang

  • 1Department of Aerospace Medicine, The Fourth Military Medical University, Xi'an, China.

Hang Tian Yi Xue Yu Yi Xue Gong Cheng = Space Medicine & Medical Engineering
|November 5, 2003
PubMed
Summary

Researchers developed a self-generating lower body negative pressure (LBNP) device that combines exercise with LBNP. This safe and user-friendly apparatus effectively creates negative pressure for potential spaceflight and pilot training applications.

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Area of Science:

  • Biomedical Engineering
  • Aerospace Medicine
  • Physiology

Context:

  • Spaceflight necessitates countermeasures for cardiovascular deconditioning.
  • Anti-G training for pilots requires methods to mitigate physiological stress.
  • Existing lower body negative pressure (LBNP) devices may lack integration with exercise.

Purpose:

  • To develop a novel, self-generating lower body negative pressure (LBNP) device.
  • To integrate LBNP with physical exercise within a single apparatus.
  • To create a safe and user-friendly device for physiological conditioning.

Summary:

  • A flexible, reinforced bellows system was designed to contain the user's lower body.
  • Device operation involves leg extension to elongate the bellows, thereby decreasing internal air pressure.
  • Adjustable valves allowed for controlled generation of negative pressures ranging from -26 to -58 mm-Hg.

Impact:

  • The device successfully integrates exercise and LBNP, offering a combined physiological stimulus.
  • Potential applications include preventing cardiovascular deconditioning during spaceflight.
  • The device may serve as a valuable tool for anti-G training in aviation.
  • The self-generating nature and ease of use suggest broad applicability in physiological research and training.