Lower-body negative pressure/ergometer exercise in bed rest: Effects on female orthostatic tolerance
Published on: 21st October, 2020
OCLC Number/Unique Identifier: 8689024101
Introduction: Alternatively using gradient lower-body negative pressure (LBNP) and ergometer exercise (LBNP + ergo) under a flight schedule framework was explored to detect its orthostatic capacity maintenance effects in female subjects after 15 days of -6° head-down bed rest (HDBR).
Methods: Twenty-two female university students were divided into a control group (n = 8), an LBNP group (n = 7), and an LBNP + ergo group (n = 7). Ergometer exercise consisted of an interval exercise protocol with 2 min intervals alternating between 41% and 70% VO2max. Gradient LBNP was decompressed in 10 mm Hg intervals to -40 mmHg every 5 min. intermittent ergometer exercise and LBNP were alternatively performed. Tilt test was performed 2 days before HDBR (R-2), on the day of HDBR termination (R+1), and 5 days after HDBR (R+5).
Results: Fifty percent of the participants (11/22) did not pass the tilt test on R+1. The orthostatic tolerance time decreased from 20 to 16.1 ± 2.1 min in the control group, to 10.0 ± 2.7 min in the LBNP group (p = 0.01) and to 16.3 ± 2.0 min in the LBNP + ergo group. The HRs and BPs were at similar level among three groups during tilt test on different test days. Compared with the control group, the LBNP + ergo group had higher SV and CO percentage changes at R+1(p < 0.023) and R+5 (p < 0.00001) during the tilt test.
Conclusion: LBNP combined with ergometer exercises fails to prevent orthostatic intolerance but it induced some positive hemodynamic changes during tilt test after 15 days HDBR.
Search by University/Institution
Enter your University/Institution to find colleagues at HSPI.
Ensuring author's satisfaction with
- Friendly and hassle-free publication process
- Less production time of articles
- Constructive peer-review
- Enhancing journal reputation
- Regular feedback system
- Quick response to authors' queries
Most Viewed Keywords
- Frozen thawed embryo transfer
- Arachnoid cyst
- Poor ovarian response
- Rapidly progressive renal failure
- Dyspepsia
- Osetoclastic giant cell
- HBV or HCV infection in pregnancy
- Hearing loss
- Fibrous dysplasia
- Pharmaco-economic study
- Dental implants
- Refractive anomalies
- 3S-t
- Minimal change disease
- Public health
- COVID-19
- Left Bundle branch block
- Bowel motility disorders
- Fever
- Binamasur
Search Articles by Country
Get all latest articles in all Heighten Science Publications Inc journals by country.
Testmonials
Thank you for your attitude and support. I am sincerely grateful to you and the entire staff of the magazine for the high professionalism and fast quality work. Thank you very much!
USA
Igor Klepikov
Dear colleagues! I am satisfied with our cooperation with you. Your service is at a high level. I hope for a future relationship. Let me know if I can get a paper version of the magazine with my articles from you. I see them on the Internet.
Aksenov V.V
It has been a fabulous journey writing articles for your journal because of the encouragement you people provide for writers from developing nations like India. Kindly continue the same. Looking forward for a long term association.
Badareesh Lakshminarayana
We appreciate the fact that you decided to give us full waiver for the applicable charges and approve the final version. You did an excellent job preparing the PDF version. Of course we will consider your magazine for our future submissions and we will pay the applicable fees then.
Anna Dionysopoulou
To the editorial team at HSPI and the Journal of Clinical Nephrology: Thank you so much for your hard work and collaboration in bringing our article to life. Your staff was responsive, flexible, and communicative and made the process smooth and easy. Thank you!
Alejandro Munoz
Publishing with the International Journal of Clinical and Experimental Ophthalmology was a rewarding experience as review process was thorough and brisk. Their visibility online is second to none as their published articles appear in all search engines. I will encourage researchers to publish with them.
Elizabeth Awoyesuku
The Journal Clinical Nephrology provides a good opportunity for readers to stay updated in the field of clinical nephrology. Additionally - it provides a good opportunity for authors to publish their work. 1. Publication of the accepted manuscripts is sufficiently rapid. 2. The trust factor between the journal and me, as an author, is very important and well preserved. 3. Peer review process very rapid and effective.
Assaf Harofeh Medical Center, Israel
Leonid Feldman
During the process your positive communication, prompt feedback and professional approach is very highly appreciated. We would like to thank you very much for your support.
Can Vuran
Congratulations for the excellence of your journal and high quality of its publications.
Angel MARTIN CASTELLANOS
I am to express my view that Heighten Science Publications are reliable quick even after peer review process. I hope and wish the publications will go a long way in disseminating science to many interested in scientific research.
College of Fisheries, CAU(I), Tripura, India
Ajit Kumar Roy
