Observational studyJournal of science and medicine in sport2018
Validation of HeadCount-2w for estimation of two-week heading: Comparison to daily reporting in adult amateur player.
Observational study in Journal of science and medicine in sport, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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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.
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Quantification of heading in adult football: a systematic review and evidence synthesis.British journal of sports medicine · 2025Pooled it
- Soccer Heading Exposure-Dependent Microstructural Injury at Depths of Sulci in Adult Amateur Players.Neurology · 2025Article
- Orbitofrontal Gray-White Interface Injury and the Association of Soccer Heading With Verbal Learning.JAMA network open · 2025Article
- Neck strength alone does not mitigate adverse associations of soccer heading with cognitive performance in adult amateur players.PloS one · 2024Article
- Repetitive soccer heading adversely impacts short-term learning among adult women.Journal of science and medicine in sport · 2022Article
- Framing potential for adverse effects of repetitive subconcussive impacts in soccer in the context of athlete and non-athlete controls.Brain imaging and behavior · 2021Article
- Implementing Precision Medicine in Human Frailty through Epigenetic Biomarkers.International journal of environmental research and public health · 2021Review
- Personality and Risk Taking in Sports: A Focus on Unintentional and Intentional Head Impacts in Amateur Soccer Players.Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine · 2020Article
- Associations of Apolipoprotein E ε4 Genotype and Ball Heading With Verbal Memory in Amateur Soccer Players.JAMA neurology · 2020Article
- Soccer heading and concussion are not associated with reduced brain volume or cortical thickness.PloS one · 2020Article
- Heading Frequency Is More Strongly Related to Cognitive Performance Than Unintentional Head Impacts in Amateur Soccer Players.Frontiers in neurology · 2018Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
objectivesTo validate the HeadCount-2w questionnaire for estimation of 2-week soccer heading by comparison to daily electronic diary reporting over the same two-week period.
designProspective observational study.
methodsAdult amateur soccer players completed HeadCount-daily, comprising 14 daily at-home assessments of soccer play and heading via a tablet PC. Following the 14day period, players completed HeadCount-2w, a web-based two-week-recall questionnaire on soccer and heading. intraclass correlation coefficient (ICC) was estimated between HeadCount-daily, the reference standard, and HeadCount-2w estimates of heading during the same 2-week period.
results53 participants (38 men) reported a mean of 24.36 (median=11.76) headers during 2 weeks via HeadCount-daily and a mean of 38.34 (median=15.0) headers for the same 2 weeks via HeadCount-2w. The ICC comparing 2-week heading from HeadCount-daily and HeadCount-2w was 0.85. Linear regression of the log-transformed Headcount-daily on HeadCount-2w data yielded a slope of 0.71 (p<0.001; 95% CI 0.54-0.82), suggesting that heading tends to be over-estimated by HeadCount-2w relative to HeadCount-daily. Slope estimates for men (0.65) and women (0.71) were similar.
conclusionsHeadCount, a self-administered web-based survey, is valid for self-reporting 2-week heading in adult amateur players, supporting its use in future research and as a simple and low-cost technique for exposure monitoring.
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Registered trials
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