The Claim

MyFitnessPal demonstrates poor validity for measuring total energy, carbohydrates, protein, cholesterol, sugar, and fibre intake in Canadian endurance athletes when compared to the Canadian Nutrient File reference standard, showing statistically significant and clinically meaningful differences, including underestimation of protein in men and overestimation of energy and carbohydrates in women, which limits its suitability for precise dietary assessment in this population.

Source: Reliability and Validity of Nutrient Assessment Applications for Canadian Endurance Athletes: MyFitnessPal and Cronometer

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
43score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

MyFitnessPal isn't very accurate for tracking calories and nutrients in Canadian endurance athletes — it often gets protein wrong for men and overestimates calories and carbs for women, so it might not be good for serious diet planning.

See the scientific wording

MyFitnessPal shows poor validity for total energy, carbohydrates, protein, cholesterol, sugar, and fibre in Canadian endurance athletes, with statistically significant and clinically meaningful differences from the Canadian Nutrient File reference standard, particularly underestimating protein in men and overestimating energy and carbohydrates in women, making it unsuitable for precise dietary assessment in this population.

What the research says

1 study
  1. Study: Reliability and Validity of Nutrient Assessment Applications for Canadian Endurance Athletes: MyFitnessPal and Cronometer

    The study found that MyFitnessPal often gives wrong numbers for calories and nutrients in Canadian endurance athletes, especially underestimating protein for men and overestimating calories and carbs for women, just like the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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