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Cited by 32Spaceflight effects on biologyLower Extremity Biomechanics and PathologiesSpace Exploration and Technology

The DOI matches its Crossref record; 28 of the 28 references it cites were found in a registry or an index.

Applied horizontal force increases impact loading in reduced-gravity running

Chang, Young-Hui, Hamerski, Chris M., Kram, Rodger·2001·Journal of Biomechanics
DOI 10.1016/s0021-9290(00)00196-2
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Abstract

The chronic exposure of astronauts to microgravity results in structural degradation of their lower limb bones. Currently, no effective exercise countermeasure exists. On Earth, the impact loading that occurs with regular locomotion is associated with the maintenance of bone's structural integrity, but impact loads are rarely experienced in space. Accurately mimicking Earth-like impact loads in a reduced-gravity environment should help to reduce the degradation of bone caused by weightlessness. We previously showed that running with externally applied horizontal forces (AHF) in the anterior direction qualitatively simulates the high-impact loading associated with downhill running on Earth. We hypothesized that running with AHF at simulated reduced gravity would produce impact loads equal to or greater than values experienced during normal running at Earth gravity. With an AHF of 20% of gravity-specific body weight at all gravity levels, impact force peaks increased 74%, average impact loading rates increased 46%, and maximum impact loading rates increased 89% compared to running without any AHF. In contrast, AHF did not substantially affect active force peaks. Duty factor and stride frequency decreased modestly with AHF at all gravity levels. We found that running with an AHF in simulated reduced gravity produced impact loads equal to or greater than those experienced at Earth gravity. An appropriate AHF could easily augment existing partial gravity treadmill running exercise countermeasures used during spaceflight and help prevent musculoskeletal degradation.

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Crossref · 10.1016/s0021-9290(00)00196-2

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  • Chang et al. (2001) found that running at 0.38 g with 20% additional applied horizontal forces increases impact force peaks to magnitudes equal or greater than those observed during running at Earth gravity.

    “Moreover, Chang et al. (2001) found out, that running at 0.38 g with 20% of additional applied horizontal forces increases impact force peaks to magnitudes equal or greater than those observed during running at Earth gravity.”

    From Human Biomechanical and Cardiopulmonary Responses to Partial Gravity – A Systematic Review (2017) · cites this paper as Chang et al., 2001

  • GRF can be modified or increased through increased locomotion velocity, external applied horizontal forces, or reactive jumps.

    “GRF can be modified/increased through increased locomotion velocity (Davis and Cavanagh, 1993), external applied horizontal forces (Chang et al., 2001) or reactive jumps (Kramer et al., 2010).”

    From Human Biomechanical and Cardiopulmonary Responses to Partial Gravity – A Systematic Review (2017) · cites this paper as Chang et al., 2001

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Research works printed but not linked: 1

  1. Davis, 1993, Simulating reduced gravity, Aviation, Space and Environmental Medicine, 64, 557

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Metadata

Authors
Chang, Y.-H., Hamerski, C. M., & Kram, R.
Affiliations
University of California, Berkeley (US)
Corresponding author
Chang, Young-Hui
ORCID
Venue
Journal of Biomechanics
Publisher
Elsevier BV
Published
2001-05
Volume
34
Issue
5
Pages
679-685
ISSN
0021-9290 (ISSN-L)
DOI
10.1016/s0021-9290(00)00196-2
OpenAlex
W2125916101
Cited by
32
References
28
Citations by year
2020: 1 · 2019: 1 · 2017: 3 · 2016: 2 · 2012: 3
FWCI
1.00
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
  • Journal of Biomechanics (publishedVersion)
  • PubMed (publishedVersion)
Funders
University of California Berkeley
Topics
  • Health Sciences › Medicine › Physiology (medical) › Spaceflight effects on biology
  • Physical Sciences › Engineering › Biomedical Engineering › Lower Extremity Biomechanics and Pathologies
  • Physical Sciences › Engineering › Aerospace Engineering › Space Exploration and Technology
Keywords
impact loading, reduced gravity, simulated microgravity, treadmill running, exercise countermeasures, bone degradation, astronauts, impact loading rate, duty cycle, cadence
MeSH terms
Adult, Biomechanical Phenomena, Bone and Bones, Bone Resorption, Female, Humans, Male, Running, Space Flight, Weightlessness Simulation, Weightlessness Countermeasures

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