Evidence map›Paper›PMID 40960640›Full record

Trial reportEuropean journal of applied physiology2026

Effects of 8-week ischemic preconditioning on swimming performance and power output in male 100-m freestyle swimmers: a randomized controlled trial.

Wenwei Yang, Ziyue Ou, Guoqin Xu, Shibin Zheng, Xinying Bo, Xu Yan, Weiwei Huang

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in European journal of applied physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–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

2 citing papers in PubMed.

  1. Trial
  2. 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

7 authors.

Wenwei Yang *School of Physical Education, Guangzhou Sport University, Guangzhou, 510500, China.
Ziyue Ou *College of Martial Arts, Guangzhou Sport University, Guangzhou, 510500, China.
Guoqin XuCollege of Exercise and Health, Guangzhou Sport University, Guangzhou, 510500, China.
Shibin ZhengSchool of Physical Education, Guangzhou Sport University, Guangzhou, 510500, China.
Xinying BoSchool of Physical Education, Guangzhou Sport University, Guangzhou, 510500, China.
Xu YanInstitute for Health and Sport, Victoria University, Melbourne, 3011, Australia.
Weiwei HuangSchool of Physical Education, Guangzhou Sport University, Guangzhou, 510500, China. huangweiw@gzsport.edu.cn.ORCID http://orcid.org/0009-0001-3529-1026

Funding

the Guangdong Province General University Innovation Team Project 2023WCXTD011the Special Fund for Biomedical and Health Key Fields of General Universities in Guangdong Province 2023ZDZX 2033
6 · The paper itself

Abstract

purposeThis study aimed to investigate the long-term effects of an 8-week ischemic preconditioning (IPC) intervention on the athletic performance of male freestyle swimmers.

methodsEighteen male 100-m freestyle swimmers were randomly assigned to either the IPC group (n = 9) or the sham operation group (n = 9), with interventions administered three times per week over the course of 8 weeks. Athletic performance was evaluated through 100-m freestyle race tests and Wingate 30-s tests at baseline, at the 4th week, and at the 9th week. The data were analyzed via two-way repeated-measures ANOVA.

resultsAfter 8 weeks of intervention, the IPC group demonstrated significantly improved performance in the 100-m race compared with the placebo group (57.57 ± 2.30 vs. 59.90 ± 2.30, p = 0.048, d = 1.01). The enhancement in the second half of the 100-m performance was more pronounced in the IPC group than in the placebo group (30.15 ± 1.00 vs. 32.32 ± 1.97, p = 0.009, d = 1.39). Significant increases in peak power (817.27 ± 144.77 vs. 674.93 ± 54.75, p = 0.014, d = 1.30), mean power (679.60 ± 85.12 vs. 541.64 ± 78.33, p = 0.003, d = 1.69), and blood lactate levels (16.07 ± 1.22 vs. 14.7 ± 0.97, p = 0.018, d = 1.24) were detected. Conversely, a significant decrease was noted in the fatigue index (51.28 ± 6.20 vs. 60.34 ± 10.60, p = 0.042, d = 1.04) and time to peak (2942.67 ± 1782.08 vs. 4758.00 ± 1830.71, p = 0.049, d = 1.00).

conclusionAn 8-week IPC intervention can effectively enhance the athletic performance of freestyle swimmers, potentially by improving anaerobic power output and delaying fatigue, as measured by the Wingate 30 s test. This finding suggests a novel intervention strategy for swim training.

Indexed as

Athletic PerformanceIschemic PreconditioningSwimmingAdolescentAdultHumansMaleYoung Adult100-m freestyleIschemic preconditioningPower outputSwimmersSwimming performance

Identifiers

PMID40960640
PMCPMC12948780

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.