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6MWT on a new self-paced treadmill system compared with overground.

Nicolas Reneaud1, Pauline Gerus2, Olivier Guérin3

  • 1Université Côte d'Azur, LAMHESS, EUR HEALTHY, 06205, Nice, France; Université Côte d'Azur, CHU de Nice, Cimiez, Plateforme fragilité, 06000, Nice, France; Ted Orthopedics, 37 rue Guibal, 13003, Marseille, France.

Gait & Posture
|November 21, 2021
PubMed
Summary

The self-paced treadmill 6-min walk test (6MWT) offers reliable gait parameters comparable to overground tests. While treadmill distance varied due to U-turns, spatiotemporal data remained consistent, validating its use.

Keywords:
6-minute walk test6MWTGaitLIDARSelf-paced treadmill

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Area of Science:

  • Biomechanics and Movement Science
  • Clinical Exercise Physiology
  • Rehabilitation Technology

Background:

  • The 6-minute walk test (6MWT) is crucial for assessing functional mobility and fatigue.
  • Overground 6MWT requires significant space, limiting its application in certain settings.
  • Treadmill-based 6MWT offers a space-efficient alternative, but its validity needs further investigation.

Purpose of the Study:

  • To compare gait parameters between self-paced (SP) treadmill (TM) and overground (OG) 6MWT in healthy adults.
  • To evaluate the reliability of gait parameters during SP TM 6MWT sessions.
  • To determine if SP TM 6MWT can yield comparable results to OG 6MWT.

Main Methods:

  • Twelve healthy young adults completed one OG 6MWT and two SP TM 6MWTs across two separate days.
  • OG 6MWT was performed in a 20m corridor using an optometric system.
  • SP TM 6MWT utilized an instrumented dual-belt treadmill with LIDAR-based speed control.

Main Results:

  • Gait parameters demonstrated good to excellent within-day and between-day reliability for the SP TM 6MWT.
  • Spatiotemporal gait parameters were similar between OG and SP TM 6MWT modalities.
  • A significant difference in total distance was observed between OG and SP TM 6MWT, attributed to U-turns in the OG test.

Conclusions:

  • The self-paced treadmill 6MWT provides reliable and comparable spatiotemporal gait parameters to overground testing.
  • The SP TM 6MWT is a viable, space-saving alternative for assessing gait performance in healthy individuals.
  • Adjustments for U-turns are necessary when comparing absolute distances between overground and treadmill 6MWT.