Do Niggles Matter? - Increased injury risk following physical complaints in football (soccer)
Two articles on PainSci cite Whalan 2020: 1. Sports Injury Prevention Tips 2. The Complete Guide to Muscle Strains

PainSci commentary on Whalan 2020: ?This page is one of thousands in the PainScience.com bibliography. It is not a general article: it is focused on a single scientific paper, and it may provide only just enough context for the summary to make sense. Links to other papers and more general information are provided wherever possible.
Minor physical complaints — “niggles” — may be warning signs of more serious athletic injuries. This study surveyed 218 players over a season, and found that their niggles caused at least triple the risk of a more serious injury over the next week. In any given week, about a quarter of players had a complaint that did not prevent their participation.
Research wish list: it would be great to study the link between minor complaints that crop up during competition, and the risk of greater injury. That is, does a new in-game “niggle,” or a flare-up of an existing one, increase the risk of imminent injury? But that's a tougher experiment. You'd have to define "warning sign" quite carefully, and then get a lot of athletes to agree to either heed them or ignore them in competition! Tough data to get. But my hypothesis, which I'd love to test, is that many serious injuries are preceded by clear warning signs, and could be prevented if you immediately backed off.
original abstract †Abstracts here may not perfectly match originals, for a variety of technical and practical reasons. Some abstacts are truncated for my purposes here, if they are particularly long-winded and unhelpful. I occasionally add clarifying notes. And I make some minor corrections.
OBJECTIVE: To determine the prevalence and impact of non-time loss injuries in semi-professional football.
METHODS: 218 players completed the Oslo Sports Trauma Research Centre (OSTRC) Questionnaire on Health Problems weekly during the 2016 season (35 weeks), recording the prevalence and impact of time loss (TL) and non-time loss (non-TL) injuries. TL injury and exposure were also collected by a third party as per the Football Consensus statement. The relative risk (RR) of a TL injury within 7 days of a self-reported non-TL injury was determined, with associated predictive power calculated.
RESULTS: The risk of TL injury was 3.6 to 6.9 × higher when preceded by ‘minor’ and ‘moderate’ non-TL complaints, respectively, and good predictive power (22.0–41.8%) was observed (AUC range = 0.73 to 0.83). Compliant responders (80% of completed OSTRC questionnaires) showed a mean self-reported weekly injury prevalence (TL and non-TL combined) of 33% (95% CI – 31.4% to 34.6%) with 28% (CI – 26.4% to 29.6%) attributed to non-TL injury.
CONCLUSION: Over a quarter of players on average, report a physical complaint each week that does not prevent them from participating in training or match play. A non-TL injury was shown to be useful in identifying individual players at an increased risk of a TL injury.
This page is part of the PainScience BIBLIOGRAPHY, which contains plain language summaries of thousands of scientific papers & others sources. It’s like a highly specialized blog. A few highlights:
- No long-term effects after a three-week open-label placebo treatment for chronic low back pain: a three-year follow-up of a randomized controlled trial. Kleine-Borgmann 2022 Pain.
- Exercise and education versus saline injections for knee osteoarthritis: a randomised controlled equivalence trial. Bandak 2022 Ann Rheum Dis.
- Association of Lumbar MRI Findings with Current and Future Back Pain in a Population-based Cohort Study. Kasch 2022 Spine (Phila Pa 1976).
- A double-blinded randomised controlled study of the value of sequential intravenous and oral magnesium therapy in patients with chronic low back pain with a neuropathic component. Yousef 2013 Anaesthesia.
- Is Neck Posture Subgroup in Late Adolescence a Risk Factor for Persistent Neck Pain in Young Adults? A Prospective Study. Richards 2021 Phys Ther.