Evidence map›Paper›PMID 24944546›Full record

ArticleJournal of the International Society of Sports Nutrition2014

Acute versus chronic supplementation of sodium citrate on 200 m performance in adolescent swimmers.

Colin Russell, Efthymios Papadopoulos, Yasmeen Mezil, Greg D Wells, Michael J Plyley, Mathew Greenway, Panagiota Klentrou

Registry-linked trialOpen access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of the International Society of Sports Nutrition, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01835912 (Chronic vs. Acute Ingestion of Sodium Citrate), which is not on this map. Cited by 7 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 2 pooled it
0.5field-weighted citation impact, top 32% 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.

NCT01835912 phase3completednot on this map

Chronic vs. Acute Ingestion of Sodium Citrate: a Randomised Placebo Controlled Cross-over Trial for Swimming a 200 Metres in Well-trained Swimmers Age 13-17

TypeinterventionalSponsorBrock UniversityRan2012 to 2013Enrolled10ConditionsAlkalosisArmsSodium Citrate Dihydrate
3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 2 syntheses or guidelines pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. Review
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

7 authors at 3 institutions in 1 country.

Colin RussellDepartment of Kinesiology, Faculty of Applied Health Sciences, Brock University, 500 Glenridge Av., St. Catharines, Ontario L2S 3A1, Canada.
Efthymios PapadopoulosDepartment of Kinesiology, Faculty of Applied Health Sciences, Brock University, 500 Glenridge Av., St. Catharines, Ontario L2S 3A1, Canada.
Yasmeen MezilDepartment of Kinesiology, Faculty of Applied Health Sciences, Brock University, 500 Glenridge Av., St. Catharines, Ontario L2S 3A1, Canada.
Greg D WellsFaculty of Kinesiology and Physical Education, University of Toronto, 55 Harbord St., Toronto, Ontario M5S 2W6, Canada.
Michael J PlyleyDepartment of Kinesiology, Faculty of Applied Health Sciences, Brock University, 500 Glenridge Av., St. Catharines, Ontario L2S 3A1, Canada.
Mathew GreenwayMichael G. DeGroote School of Medicine, McMaster University, 500 Glenridge Av., St. Catharines, Ontario L2S 3A1, Canada.
Panagiota KlentrouDepartment of Kinesiology, Faculty of Applied Health Sciences, Brock University, 500 Glenridge Av., St. Catharines, Ontario L2S 3A1, Canada.
Brock University · CAMcMaster University · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA double-blinded, placebo-controlled, cross-over design was used to investigate whether two different sodium citrate dihydrate (Na-CIT) supplementation protocols improve 200 m swimming performance in adolescent swimmers.

methodsTen, male swimmers (14.9 ± 0.4 years of age; 63.5 ± 4 kg) performed four 200 m time trials with the following treatments: acute (ACU) supplementation (0.5 g kg(-1) administered 120 min pre-trial), acute placebo (PLC-A), chronic (CHR) supplementation (0.1 g∙kg(-1) for three days and 0.3 g kg(-1) on the forth day 120 min pre-trial), and chronic placebo (PLC-C). The order of the trials was randomized, with at least a six-day wash-out period between trials. Blood samples were collected by finger prick pre-ingestion, 100 min post-ingestion, and 3 min post-trial. Performance time, rate of perceived exertion, pH, base excess, bicarbonate and lactate concentration were measured.

resultsPost-ingestion bicarbonate and base excess were higher (P < 0.05) in both the ACU and CHR trials compared to placebo showing adequate pre-exercise alkalosis. However, performance time, rate of perceived exertion as well as post-trial pH and lactate concentration were not significantly different between trials. Further analysis revealed that five swimmers, identified as responders, improved their performance time by 1.03% (P < 0.05) and attained higher post-trial lactate concentrations in the ACU versus PLC-A trial (P < 0.05). They also had significantly higher post-trial lactate concentrations compared to the non-responders in the ACU and CHR trials.

conclusionsAcute supplementation of Na-CIT prior to 200 m swimming performance led to a modest time improvement and higher blood lactate concentrations in only half of the swimmers while the chronic Na-CIT supplementation did not provide any ergogenic effect in this group of adolescent swimmers.

trial registrationClinicaltrials.gov NCT01835912.

Indexed as

AlkalizationBicarbonateBlood lactateBufferErgogenic aidResponders

Identifiers

PMID24944546
PMCPMC4061773
OpenAlexW2117545239

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.