ArticleBritish journal of sports medicine2007
Effects of rugby sevens matches on human neutrophil-related non-specific immunity.
Article in British journal of sports medicine, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
18 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Olympic Sports Science-Bibliometric Analysis of All Summer and Winter Olympic Sports Research.Frontiers in sports and active living · 2021Pooled it
- Influence of transarterial chemoembolization on serum opsonic activity in hepatocellular carcinoma measured by chemiluminescence.Journal of clinical biochemistry and nutrition · 2025Article
- Knee Armor Training Program: An 8-Week Sensorimotor Approach to Reducing Knee Injury Risk in Women's Rugby.Journal of clinical medicine · 2025Article
- The role and application of internal and external load indicators in monitoring fatigue in rugby players-a narrative review.Frontiers in sports and active living · 2025Review
- Association between reactive oxygen species production in neutrophils and liver fibrosis in the general population.Journal of clinical biochemistry and nutrition · 2023Article
- Association between Polyunsaturated Fatty Acid and Reactive Oxygen Species Production of Neutrophils in the General Population.Nutrients · 2020Article
- Blood Biomarkers of Recovery Efficiency in Soccer Players.International journal of environmental research and public health · 2019Article
- Influence of gastric endoscopic submucosal dissection on serum opsonic activity measured by chemiluminescence.Journal of clinical biochemistry and nutrition · 2019Article
- Multifactorial monitoring of training load in elite rugby sevens players: cortisol/cortisone ratio as a valid tool of training load monitoring.Biology of sport · 2016Article
- Magnesium Supplementation Diminishes Peripheral Blood Lymphocyte DNA Oxidative Damage in Athletes and Sedentary Young Man.Oxidative medicine and cellular longevity · 2016Article
- Training Effects on Immune Function in Judoists.Asian journal of sports medicine · 2015Article
- Effects of physical activity upon the liver.European journal of applied physiology · 2015Review
- Match analysis and player characteristics in rugby sevens.Sports medicine (Auckland, N.Z.) · 2014Review
- Physical activity - an important preanalytical variable.Biochemia medica · 2014Review
- Effect of short-term maximal exercise on biochemical markers of muscle damage, total antioxidant status, and homocysteine levels in football players.Asian journal of sports medicine · 2012Article
- Monitoring training load and fatigue in rugby sevens players.Asian journal of sports medicine · 2012Article
- Effect of ramadan fasting on body water status markers after a rugby sevens match.Asian journal of sports medicine · 2011Article
- Time course of changes in immuneoendocrine markers following an international rugby game.European journal of applied physiology · 2010Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimsTo evaluate the influences of the accumulative effect of two consecutive rugby sevens matches (Sevens) on aspects of human neutrophil-related non-specific immunity.
methodsIn seven players participating in the Japan Sevens, neutrophil reactive oxygen species (ROS) production capability and phagocytic activity were measured using flow cytometry, and serum opsonic activity (SOA) was assessed by measuring neutrophil ROS using the peak height of lucigenin-dependent chemiluminescence before and after two consecutive matches.
resultsROS showed no change immediately after the first match, and had significantly (P<0.05) increased 4 h later, but showed a decrease after the second match. Phagocytic activity showed no change immediately after the first match, but had significantly (P<0.01) decreased 4 h later, and showed a further decrease after the second match, although it was not significant. SOA significantly (P<0.01) increased after the first match, and still maintained its high 4 h later, but decreased after the second match. ROS production capability, phagocytic activity and SOA significantly (P<0.01) decreased after the second match.
conclusionsWhen rugby players play two consecutive Sevens matches, the exercise loading is thought to be hard, similar to that experienced during a marathon race and intensive or long training in a training camp, although the expected changes were not seen after the first match. Differences between after the first and the second matches may be due to the "cumulative effect".
Indexed as
Identifiers
What OpenQuestion holds
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.