Evidence map›Paper›PMID 25251930›Full record

ArticleHigh altitude medicine & biology2014

Rhodiola crenulata- and Cordyceps sinensis-based supplement boosts aerobic exercise performance after short-term high altitude training.

Chung-Yu Chen, Chien-Wen Hou, Jeffrey R Bernard, Chiu-Chou Chen, Ta-Cheng Hung, Lu-Ling Cheng, Yi-Hung Liao, Chia-Hua Kuo

Open access · greenAbstract readControlled Clinical Trial
In one paragraph

Article in High altitude medicine & biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 3 pooled it
1.1field-weighted citation impact, top 24% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 3 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. The effect ofFrontiers in nutrition · 2025
    Pooled it
  3. Pooled it
  4. The Effect of Short-TermNutrients · 2025
    Trial
  5. Trial
  6. Nutrients · 2019
    Trial
  7. Review
  8. Review
  9. Ergogenic Aid by Cordyceps: Does It Work??Current nutrition reports · 2025
    Review
  10. Review
  11. Effectiveness of fermentation broth ofFrontiers in neurology · 2025
    Article
  12. CombinedFrontiers in physiology · 2025
    Article
  13. Combined effects ofFrontiers in nutrition · 2024
    Article
  14. Exercise performance reduction and preventive measures in highland sports.Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Supercritical Carbon Dioxide Extracts ofFrontiers in pharmacology · 2021
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

Chung-Yu Chen1 Department of Exercise and Health Sciences, University of Taipei , Taipei, Taiwan .
Chien-Wen Hou
Jeffrey R Bernard
Chiu-Chou Chen
Ta-Cheng Hung
Lu-Ling Cheng
Yi-Hung Liao
Chia-Hua Kuo
University of Taipei · TWCalifornia State University System · USNational Taipei University of Nursing and Health Science · TWShih Chien University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

High altitude training is a widely used strategy for improving aerobic exercise performance. Both Rhodiola crenulata (R) and Cordyceps sinensis (C) supplements have been reported to improve exercise performance. However, it is not clear whether the provision of R and C during high altitude training could further enhance aerobic endurance capacity. In this study, we examined the effect of R and C based supplementation on aerobic exercise capacity following 2-week high altitude training. Alterations to autonomic nervous system activity, circulatory hormonal, and hematological profiles were investigated. Eighteen male subjects were divided into two groups: Placebo (n=9) and R/C supplementation (RC, n=9). Both groups received either RC (R: 1400 mg+C: 600 mg per day) or the placebo during a 2-week training period at an altitude of 2200 m. After 2 weeks of altitude training, compared with Placebo group, the exhaustive run time was markedly longer (Placebo: +2.2% vs. RC: +5.7%; p<0.05) and the decline of parasympathetic (PNS) activity was significantly prevented in RC group (Placebo: -51% vs. RC: -41%; p<0.05). Red blood cell, hematocrit, and hemoglobin levels were elevated in both groups to a comparable extent after high altitude training (p<0.05), whereas the erythropoietin (EPO) level remained higher in the Placebo group (∼48% above RC values; p<0.05). The provision of an RC supplement during altitude training provides greater training benefits in improving aerobic performance. This beneficial effect of RC treatment may result from better maintenance of PNS activity and accelerated physiological adaptations during high altitude training.

Indexed as

AltitudeCordycepsDietary SupplementsRhodiolaBiomarkersDouble-Blind MethodExerciseHumansHypoxiaMaleOxygen ConsumptionParasympathetic Nervous SystemPhysical EnduranceBiomarkersathletes at altitudeerythropoietinexercisehypobaric hypoxiaparasympathetic nervous system

Identifiers

PMID25251930
PMCPMC4174424
OpenAlexW1623195445

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.