Evidence map›Paper›PMID 38294621›Full record

ArticleJournal of assisted reproduction and genetics2024

The influence of lifestyle and biological factors on semen variability.

Hannah E Lyons, Prabin Gyawali, Nicola Mathews, Patience Castleton, Shadrack M Mutuku, Nicole O McPherson

Open access · hybridAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
4.8field-weighted citation impact, top 6% 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

6 citing papers in PubMed, 9 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Hannah E LyonsRobinson Research Institute, The University of Adelaide, Adelaide, SA, 5005, Australia.
Prabin GyawaliRobinson Research Institute, The University of Adelaide, Adelaide, SA, 5005, Australia.
Nicola MathewsRobinson Research Institute, The University of Adelaide, Adelaide, SA, 5005, Australia.
Patience CastletonRobinson Research Institute, The University of Adelaide, Adelaide, SA, 5005, Australia.
Shadrack M MutukuRobinson Research Institute, The University of Adelaide, Adelaide, SA, 5005, Australia.
Nicole O McPhersonRobinson Research Institute, The University of Adelaide, Adelaide, SA, 5005, Australia. nicole.mcpherson@adelaide.edu.au.ORCID http://orcid.org/0000-0002-3492-9403
Freemasons Foundation Centre for Men's Health · AURespiratory Clinical Trials · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeSemen parameters are subjected to within-individual variability over time. The driving factors for this variability are likely multi-factorial, with healthier lifestyle associated with better semen quality. The extent in which variations in individual's lifestyle contributes to within-individual semen variability is unknown.

methodsA total of 116 repeat semen samples from 29 men aged 19-37 over 6 months were collected. Basic semen analysis as per 5th WHO manual and extended semen parameters (sperm DNA fragmentation, redox potential and lipid peroxidation, sperm binding to hyaluronan and hyperactive motility) were assessed. An additional 39 lifestyle/biological factors (weight, blood pressure, etc.) were collected at each sample including validated health questionnaires SF36 Health Status, Australian Recommend Food Score, and International Physical Activity Questionnaire.

resultsOnly 10 out of the 39 lifestyle factors varied within men across samples including age (P = 0.0024), systolic blood pressure (P = 0.0080), social functioning (P = 0.0340), energy (P = 0.0069), non-alcoholic caffeinated beverages (P = 0.0010), and nutrition (P < 0.0001). The only semen parameter that varied between collections was sperm morphology (coefficient of variation 23.8 (6.1-72.0), P < 0.05). We only observed weak (r < 0.3) to moderate (r > 0.3- < 0.6) correlations between lifestyle factors, including body mass index, waist circumference, nutrition, exercise, blood pressure and semen parameters including sperm count, progressive motility, and sperm DNA fragmentation (P < 0.05).

conclusionIn healthy men from the general population, semen quality and associated lifestyle factors do not significantly vary over 6 months, indicating that one semen sample is likely sufficient for determining male fertility in this population.

Indexed as

DNA FragmentationLife StyleSemenSemen AnalysisSpermatozoaSperm MotilityAdultExerciseHumansLipid PeroxidationMaleSperm CountYoung AdultBody mass indexExerciseFertilityInfertilityNutritionSperm

Identifiers

PMID38294621
PMCPMC11052966
OpenAlexW4391400150

What OpenQuestion holds

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LicenceCC BY
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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.