Low-profile elastic exosuit reduces back muscle fatigue
We investigated the extent to which an un-motorized, low-profile, elastic exosuit reduced the rate of fatigue for six lumbar extensor muscles during leaning. Six healthy subjects participated in an A-B-A (withdrawal design) study protocol, which involved leaning at 45º for up to 90 s without exosuit...
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| Published in | Scientific reports Vol. 10; no. 1; p. 15958 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
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Nature Publishing Group UK
29.09.2020
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| Abstract | We investigated the extent to which an un-motorized, low-profile, elastic exosuit reduced the rate of fatigue for six lumbar extensor muscles during leaning. Six healthy subjects participated in an A-B-A (withdrawal design) study protocol, which involved leaning at 45º for up to 90 s without exosuit assistance (A1), then with assistance (B), then again without assistance (A2). The exosuit provided approximately 12–16 Nm of lumbar extension torque. We measured lumbar muscle activity (via surface electromyography) and assessed fatigue rate via median frequency slope. We found that five of the six subjects showed consistent reductions in fatigue rate (ranging from 26% to 87%) for a subset of lumbar muscles (ranging from one to all six lumbar muscles measured). These findings objectively demonstrate the ability of a low-profile elastic exosuit to reduce back muscle fatigue during leaning, which may improve endurance for various occupations. |
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| AbstractList | We investigated the extent to which an un-motorized, low-profile, elastic exosuit reduced the rate of fatigue for six lumbar extensor muscles during leaning. Six healthy subjects participated in an A-B-A (withdrawal design) study protocol, which involved leaning at 45º for up to 90 s without exosuit assistance (A1), then with assistance (B), then again without assistance (A2). The exosuit provided approximately 12-16 Nm of lumbar extension torque. We measured lumbar muscle activity (via surface electromyography) and assessed fatigue rate via median frequency slope. We found that five of the six subjects showed consistent reductions in fatigue rate (ranging from 26% to 87%) for a subset of lumbar muscles (ranging from one to all six lumbar muscles measured). These findings objectively demonstrate the ability of a low-profile elastic exosuit to reduce back muscle fatigue during leaning, which may improve endurance for various occupations. We investigated the extent to which an un-motorized, low-profile, elastic exosuit reduced the rate of fatigue for six lumbar extensor muscles during leaning. Six healthy subjects participated in an A-B-A (withdrawal design) study protocol, which involved leaning at 45º for up to 90 s without exosuit assistance (A1), then with assistance (B), then again without assistance (A2). The exosuit provided approximately 12-16 Nm of lumbar extension torque. We measured lumbar muscle activity (via surface electromyography) and assessed fatigue rate via median frequency slope. We found that five of the six subjects showed consistent reductions in fatigue rate (ranging from 26% to 87%) for a subset of lumbar muscles (ranging from one to all six lumbar muscles measured). These findings objectively demonstrate the ability of a low-profile elastic exosuit to reduce back muscle fatigue during leaning, which may improve endurance for various occupations.We investigated the extent to which an un-motorized, low-profile, elastic exosuit reduced the rate of fatigue for six lumbar extensor muscles during leaning. Six healthy subjects participated in an A-B-A (withdrawal design) study protocol, which involved leaning at 45º for up to 90 s without exosuit assistance (A1), then with assistance (B), then again without assistance (A2). The exosuit provided approximately 12-16 Nm of lumbar extension torque. We measured lumbar muscle activity (via surface electromyography) and assessed fatigue rate via median frequency slope. We found that five of the six subjects showed consistent reductions in fatigue rate (ranging from 26% to 87%) for a subset of lumbar muscles (ranging from one to all six lumbar muscles measured). These findings objectively demonstrate the ability of a low-profile elastic exosuit to reduce back muscle fatigue during leaning, which may improve endurance for various occupations. |
| ArticleNumber | 15958 |
| Author | Scherpereel, Keaton L. Zelik, Karl E. Soltys, Juliana C. Yang, Aaron J. Lamers, Erik P. |
| Author_xml | – sequence: 1 givenname: Erik P. surname: Lamers fullname: Lamers, Erik P. email: erik.p.lamers@vanderbilt.edu organization: Department of Mechanical Engineering, Vanderbilt University – sequence: 2 givenname: Juliana C. surname: Soltys fullname: Soltys, Juliana C. organization: Department of Mechanical Engineering, Vanderbilt University – sequence: 3 givenname: Keaton L. surname: Scherpereel fullname: Scherpereel, Keaton L. organization: Department of Mechanical Engineering, Vanderbilt University – sequence: 4 givenname: Aaron J. surname: Yang fullname: Yang, Aaron J. organization: Department of Physical Medicine & Rehabilitation, Vanderbilt University – sequence: 5 givenname: Karl E. surname: Zelik fullname: Zelik, Karl E. organization: Department of Mechanical Engineering, Vanderbilt University, Department of Biomedical Engineering, Vanderbilt University, Department of Physical Medicine & Rehabilitation, Vanderbilt University |
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| SubjectTerms | 639/166 639/166/985 639/166/988 Braces Electromyography - methods Exercise Test Exoskeleton Device Female Humanities and Social Sciences Humans Isometric Contraction - physiology Low Back Pain - therapy Lumbar Vertebrae Lumbosacral Region Male multidisciplinary Muscle Fatigue - physiology Muscle, Skeletal - physiology Physical Endurance - physiology Science Science (multidisciplinary) Young Adult |
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| Title | Low-profile elastic exosuit reduces back muscle fatigue |
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