Evidence map›Paper›PMID 27372742›Full record

Trial reportEuropean journal of applied physiology2016

Caffeine ingestion improves power output decrement during 3-min all-out exercise.

Ching-Feng Cheng, Wei-Chieh Hsu, Yu-Hsuan Kuo, Ming-Tsung Shih, Chia-Lun Lee

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. International society of sports nutrition position stand: caffeine and exercise performance.Journal of the International Society of Sports Nutrition · 2021
    Review
  8. 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

5 authors.

Ching-Feng ChengDepartment of Athletic Performance, National Taiwan Normal University, Taipei, Taiwan.
Wei-Chieh HsuGraduate Institute of Sports Training, University of Taipei, Taipei, Taiwan.
Yu-Hsuan KuoDepartment of Physical Education, National Taiwan Normal University, Taipei, Taiwan.
Ming-Tsung ShihDepartment of Athletic Performance, National Taiwan Normal University, Taipei, Taiwan.
Chia-Lun LeeCenter for General Education, National Sun Yat-sen University, No. 70, Lienhai Rd., Kaohsiung, 80424, Taiwan. karenlee1129@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the effect of caffeine ingestion on the 3-min all-out test (3MT) performance and plasma electrolytes in athletes.

methodsFifteen collegiate male basketball players were recruited and completed two trials separated by at least 1 week in caffeine (CAF, 6 mg kg(-1)) and placebo conditions. During the first visit, participants performed an incremental cycling test to determine their 3MT resistance. After a familiarization trial, participants performed a CAF or PL trial according to a randomized crossover design. One hour after ingesting capsules, the participants performed the 3MT to estimate the end-test power (EP) and work done above EP (WEP). Blood samples for sodium (Na(+)), potassium (K(+)), pH, and lactate concentrations were drawn pretest, 1 h after ingestion, and posttest.

resultsSignificant differences in WEP (CAF vs. PL, 13.4 ± 3.0 vs. 12.1 ± 2.7 kJ, P < 0.05) but not in EP (CAF vs. PL, 242 ± 37 vs. 244 ± 42 W, P > 0.05) were determined between the conditions. Compared with the PL condition, the CAF condition yielded significantly higher power outputs (60-150 s), a lower fatigue rate during the 3MT (CAF vs. PL, 0.024 ± 0.007 vs. 0.029 ± 0.006 s(-1), P < 0.05), a significantly higher lactate concentration after the 3MT, and significantly lower K(+) concentrations at 1 h after caffeine ingestion. There were no significant interaction effects for pH and Na(+) concentrations.

conclusionsCaffeine ingestion did not change EP but improved WEP and the rate of decline in power output during short-term, severe exercise.

Indexed as

Dietary SupplementsAdministration, OralCaffeineDose-Response Relationship, DrugDouble-Blind MethodEnergy TransferExerciseExercise TestHumansMaleOxygen ConsumptionPhysical EnduranceYoung AdultCaffeineAnaerobic powerCritical powerErgogenic aidNutritional supplementPerformanceShort-term high-intensity exercise

Identifiers

PMID27372742

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.