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Cited by 20Spaceflight effects on biologyCardiovascular and exercise physiologyCardiovascular Syncope and Autonomic Disorders

Effects of daily mild supine exercise on physical performance after 20 days bed rest in young persons

Suzuki, Y., Kashihara, H., Takenaka, K., Kawakubo, K, Makita, Y., Goto, S., Ikawa, S., Gunji, A.·1994·Acta Astronautica
DOI 10.1016/0094-5765(94)90114-7
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Abstract

To investigate the effects of daily mild supine exercise on physical performance capacity identified as maximal oxygen uptake rate (VO2max) after 20 days bedrest, 3 male students performed a supine pedaling at 40% intensity of VO2max for one hour every day, while 6 male and 5 female students were control. Before and after the bedrest, muscle mass and strength of exercising leg and cardiovascular responses during -40mmHg lower body negative pressure (LBNP) and moderate upright cycling exercise were measured. Despite the exercise programme VO2max was similarly decreased to the control subjects after bed-rest. The delta VO2max was correlated to delta % left ventricular fractional shortening during LBNP, and also % delta VO2max to % delta stroke volume of the moderate exercise (both p<0.05). The exercise programme should be too weak to maintain cardiovascular functions and thus to present the decrease in VO2max against prolonged bedrest as well as weightlessness stress.

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Crossref · 10.1016/0094-5765(94)90114-7

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20 of 20 references verified0 citation errors · 0 not checkable

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  • The majority of included bed rest studies can be classified as strict bed rest (24/7), but only a few reported an average of 30 min per day sitting in a wheelchair for toileting or showering.

    “The majority of included bed rest studies can be classified as strict bed rest (24/7), but only a few reported an average of 30 min per day sitting in a wheelchair for toileting or showering (41, 67).”

    From Nonuniform loss of muscle strength and atrophy during bed rest: a systematic review (2021) · cites this paper as [41]

  • Two other studies deviated from strict bed rest and allowed 30 min per day of sitting in a wheelchair for toileting or showering.

    “In addition to choosing to include both bed rest modalities (horizontal and head-down tilt), two other studies (41, 67) deviated from strict bed rest (24/7) and allowed 30 min per day of sitting in a wheelchair for toileting or showering.”

    From Nonuniform loss of muscle strength and atrophy during bed rest: a systematic review (2021) · cites this paper as [41]

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Related

Authors
Suzuki, Y., Kashihara, H., Takenaka, K., Kawakubo, K., Makita, Y., Goto, S., Ikawa, S., & Gunji, A.
Affiliations
The University of Tokyo (JP)
ORCID
Suzuki, Y.
Venue
Acta Astronautica
Publisher
Elsevier BV
Published
1994-07
Volume
33
Pages
101-111
ISSN
0094-5765 (ISSN-L)
DOI
10.1016/0094-5765(94)90114-7
OpenAlex
W1980050195
Cited by
20
References
20
Citations by year
2024: 1 · 2023: 1 · 2022: 2 · 2021: 1 · 2017: 2 · 2016: 1 · 2012: 3
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
  • Acta Astronautica (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Spaceflight effects on biology
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Surgery › Cardiovascular Syncope and Autonomic Disorders
Keywords
bed rest, supine exercise, VO2max, physical performance, lower body negative pressure, left ventricular fractional shortening, stroke volume, muscle strength, muscle mass, cardiovascular function, microgravity, countermeasures
MeSH terms
Adult, Bed Rest, Exercise Therapy, Physical Exertion, Female, Heart Rate, Humans, Lower Body Negative Pressure, Male, Muscle Contraction, Myocardial Contraction, Oxygen Consumption, Stroke Volume, Exercise, Supine Position, Muscle, Skeletal

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