Evidence map›Paper›PMID 38828413›Full record

SynthesisFrontiers in endocrinology2024

Effects of long and short ejaculatory abstinence on sperm parameters: a meta-analysis of randomized-controlled trials.

Arturo Lo Giudice, Maria Giovanna Asmundo, Sebastiano Cimino, Andrea Cocci, Marco Falcone, Marco Capece, Ali Saber Abdelhameed, Paolo Capogrosso, Afonso Morgado, Georgios Tsampoukas and 2 more

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Frontiers in endocrinology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

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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

12 authors.

Arturo Lo GiudiceUrology Section, University of Catania, Catania, Italy.
Maria Giovanna AsmundoUrology Section, University of Catania, Catania, Italy.
Sebastiano CiminoUrology Section, University of Catania, Catania, Italy.
Andrea CocciUrology Section, University of Florence, Florence, Italy.
Marco FalconeUrology Section, University of Turin, Turin, Italy.
Marco CapeceUrology Section, University of Naples Federico II, Naples, Italy.
Ali Saber AbdelhameedDepartment of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
Paolo CapogrossoUrology Section, University of Varese, Varese, Italy.
Afonso MorgadoUrology Section, University of Porto, Porto, Portugal.
Georgios TsampoukasUrology Section, The Great Western Hospital, Swindon, United Kingdom.
Celeste ManfrediUrology Section, University of Naples Federico II, Naples, Italy.
Giorgio Ivan RussoDepartment of Urology, University of Catania, Catania, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: This study aimed to investigate the effects of ejaculatory abstinence on sperm parameters. Methods: This analysis was registered in PROSPERO (CRD42023472124). We performed a search on PubMed using the following text terms: (("sperm parameters" OR "sperm analysis" [Mesh]) AND ("sperm DNA fragmentation" OR "DNA fragmentation" [Mesh]) AND ("sexual abstinence" [Mesh] OR "abstinence")) and an advanced search in Scopus using the terms ("sperm parameters" OR "sperm parameters" OR "DNA fragmentation") AND ("abstinence"). The sperm parameters that were investigated were sperm volume, total sperm motility, progressive sperm motility, sperm concentration, sperm morphology, and sperm DNA fragmentation (SDF). A two-day cut-off as a "short" or "long" abstinence period has been defined. Results: Thirteen studies published between 2013 and 2022 were included in this meta-analysis. A total of 2,315 patients, ranging from 6 to 836 from each cohort, were enrolled in the study. We showed that longer abstinence time was associated with greater sperm concentration (mean difference [MD]: 8.19; p <0.01), sperm volume (MD: 0.96; p <0.01), and higher SDF (MD: 3.46; p <0.01), but lower progressive sperm motility (MD: -1.83; p <0.01). Otherwise, no statistically significant difference was observed in patients with longer vs. shorter abstinence times regarding total sperm motility (MD: -1.83; p = 0.06). Meta-regression analysis showed that days of abstinence were positively and linearly related to sperm concentration (slope: 3.74; p <0.01) and SDF (slope: 0.65; p = 0.044). Conclusions: According to our data, short ejaculatory abstinence is associated with better sperm quality. Indeed, a higher percentage of progressive sperm motility and lower levels of SDF have been reported in a short abstinence cohort. In contrast, the long abstinence group reported a higher sperm concentration. Systematic review registration: https://www.crd.york.ac.uk/PROSPERO/, identifier CRD42023472124.

Indexed as

EjaculationRandomized Controlled Trials as TopicSexual AbstinenceSpermatozoaSperm CountSperm MotilityDNA FragmentationHumansMaleSemen AnalysisTime FactorsDNA fragmentationejaculatory abstinencesemen parameterssexual abstinencesperm parameters

Identifiers

PMID38828413
PMCPMC11140051

What OpenQuestion holds

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Registered trials

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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.