Dr. Claire-Marie Roberts, a distinguished performance director with extensive experience in the Premier League and Formula One, warns that professional football is becoming dangerously susceptible to pseudoscience. While working at Coventry City, Roberts frequently encountered sales pitches for gadgets and supplements that promised miraculous performance gains, occasionally fielding up to 50 LinkedIn inquiries a week. She recalls one particularly absurd instance where a salesperson attempted to sell her “oxygen in a can,” arguing that because atmospheric oxygen is only 21%, the product would be beneficial for players.
Roberts argues that a widening “science-practice gap” has left the sport vulnerable to exploitation. She contends that elite clubs, driven by a desire for quick fixes rather than fundamental improvements, are falling prey to marketing rather than evidence-based protocols. “It’s getting much worse,” she notes, emphasizing that coaches and staff often lack the scientific background to properly scrutinize extravagant claims.
A primary point of concern for Roberts is the widespread adoption of cryotherapy chambers. Despite their prevalence at top-tier training grounds, she asserts that there is virtually no credible scientific evidence to support their use, with the exception of a limited study potentially linking them to dementia prevention. She warns that such practices might even be counterproductive, citing recent suggestions that cold therapy could potentially blunt necessary muscular adaptation.
The expert emphasizes that recovery should remain focused on the basics: quality sleep and proper nutrition. She characterizes the current reliance on supplements as a multibillion-pound industry that often distracts from essential needs. Roberts argues that supplementation should only be employed to address specific, evidence-based deficiencies—such as vitamin D in northern regions or vitamin C—rather than as a universal solution for performance enhancement.
Kinesiology tape, often seen on high-profile players like Cristiano Ronaldo and Gareth Bale, is another trend Roberts dismisses as a “big white elephant.” She maintains there is no empirical evidence that the tape aids in injury prevention or performance, noting that it acts merely as a placebo. She distinguishes this from medical strapping, which can provide necessary external joint support in specific injury cases.
The issue is exacerbated by a tendency for clubs to mimic the habits of top-tier organizations like Chelsea, Manchester City, or the England national team. When these prominent entities adopt a practice, other clubs often follow suit without understanding the underlying scientific basis. This “misappropriation of confidence” creates a cycle where ineffective or unproven methods become standardized across the game.
Roberts, who moved to McLaren as director of human performance after helping lead Coventry to Championship success, suggests that football is particularly prone to these trends due to the extreme pressure and high financial stakes involved. She believes the sport possesses a persistent anti-intellectual streak, where a lack of critical thinking allows unverified products to proliferate.
According to Roberts, football will continue to face these challenges until it places scientific rigor at the heart of its decision-making processes. She advocates for the employment of qualified staff capable of evaluating performance claims objectively, moving away from the dangerous assumption that outcomes can be accelerated without the hard work of consistent training, proper diet, and adequate rest. The report also notes that responsible for optimising players’ potential, she was accustomed to being pitched the latest gimmick promising miraculous gains, as the performance director. The report also notes that at times, she could receive up to 50 LinkedIn messages a week offering a device, supplement or technology that claimed to produce magical results. The report also notes that “It is only 21%,” the caller told her. The report also notes that she thought, that’s GCSE chemistry. The report also notes that then came the sales pitch: “So what we’ve done is put oxygen in a can and we think you might want to use it.”. The report also notes that she did not take the caller up on his offer to buy oxygen in a can for Coventry’s players, suffice to say. The report also notes that to players desperate for a shortcut and with money to burn, she is shocked by how professional football is being duped by pseudoscience: from coaches and performance staff misled by snake-oil sellers. The report also notes that “They’re taking a population that is very susceptible to: ‘How can I hack my performance advantage.
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