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Cited by 90Spaceflight effects on biologyEffects of Vibration on HealthCardiovascular and exercise physiology

High-Intensity Jump Training Is Tolerated during 60 Days of Bed Rest and Is Very Effective in Preserving Leg Power and Lean Body Mass: An Overview of the Cologne RSL Study

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Kramer, Andreas, Kümmel, Jakob, Mulder, Edwin, Gollhofer, Albert, Frings-Meuthen, Petra, Gruber, Markus·2017·PLOS ONE
DOI 10.1371/journal.pone.0169793PMC PMC5231329
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Abstract

PURPOSE: Space agencies are looking for effective and efficient countermeasures for the degrading effects of weightlessness on the human body. The aim of this study was to assess the effects of a novel jump exercise countermeasure during bed rest on vitals, body mass, body composition, and jump performance. METHODS: 23 male participants (29±6 years, 181±6 cm, 77±7 kg) were confined to a bed rest facility for 90 days: a 15-day ambulatory measurement phase, a 60-day six-degree head-down-tilt bed rest phase (HDT), and a 15-day ambulatory recovery phase. Participants were randomly allocated to the jump training group (JUMP, n = 12) or the control group (CTRL, n = 11). A typical training session consisted of 4x10 countermovement jumps and 2x10 hops in a sledge jump system. The training group had to complete 5-6 sessions per week. RESULTS: Peak force for the reactive hops (3.6±0.4 kN) as well as jump height (35±4 cm) and peak power (3.1±0.2 kW) for the countermovement jumps could be maintained over the 60 days of HDT. Lean body mass decreased in CTRL but not in JUMP (-1.6±1.9 kg and 0±1.0 kg, respectively, interaction effect p = 0.03). Resting heart rate during recovery was significantly increased for CTRL but not for JUMP (interaction effect p<0.001). CONCLUSION: Participants tolerated the near-daily high-intensity jump training and maintained high peak forces and high power output during 60 days of bed rest. The countermeasure was effective in preserving lean body mass and partly preventing cardiac deconditioning with only several minutes of training per day.

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  • Isometric and dynamic knee extensor torque at differing joint angles and angular speeds are evidence-based predictors for clinically relevant lower extremity functions, but quantitative transferability in multiarticular dynamic conditions is restricted.

    “Although isometric and dynamic knee extensor torque at differing joint angles and angular speeds included in our set of pooled data are evidence-based predictors for clinically relevant lower extremity functions (96), the quantitative transferability in multiarticular dynamic conditions is restricted (97).”

    From Nonuniform loss of muscle strength and atrophy during bed rest: a systematic review (2021) · cites this paper as [97]

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Authors
Kramer, A., Kümmel, J., Mulder, E., Gollhofer, A., Frings-Meuthen, P., & Gruber, M.
Affiliations
  • University of Konstanz (DE)
  • Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR) (DE)
  • University of Freiburg (DE)
Corresponding author
Kramer, Andreas
ORCID
Venue
PLOS ONE
Publisher
Public Library of Science (PLoS)
Published
2017-01-12
Volume
12
Issue
1
Pages
e0169793
ISSN
1932-6203 (ISSN-L)
DOI
10.1371/journal.pone.0169793
PMC
PMC5231329
OpenAlex
W2578476856
Cited by
90
References
0
Citations by year
2026: 6 · 2025: 10 · 2024: 7 · 2023: 3 · 2022: 9 · 2021: 12 · 2020: 17 · 2019: 13 · 2018: 10 · 2017: 3
FWCI
8.70
Type
journal article
Language
en
Open access
Licence
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • elib (German Aerospace Center) (acceptedVersion)
  • KOPS (University of Konstanz) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
European Space Agency (4000113871-15-NL)
Topics
  • Health Sciences › Medicine › Physiology › Spaceflight effects on biology
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Effects of Vibration on Health
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
bed rest, plyometric training, countermovement jump, leg power, lean body mass, body composition, cardiac deconditioning, resting heart rate, microgravity
MeSH terms
Adult, Bed Rest, Humans, Leg, Male, Exercise, Body Mass Index, Head-Down Tilt, Muscle Strength

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