Nutrition Knowledge and Dietary Adequacy in Powerlifters
Taylor P M Leonhardt1, Philip D Chilibeck1, Jongbum Ko1
1College of Kinesiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada ; and.
Journal of Strength and Conditioning Research
|July 29, 2024
Summary
Higher nutrition knowledge in powerlifters is linked to better dietary intake, but sex and competition phase also impact nutrition. Female powerlifters need to monitor B-vitamins and water during weight-cutting phases.
Area of Science:
- Sports Nutrition
- Human Nutrition
- Exercise Physiology
Background:
- Athletes in weight-categorized sports, like powerlifting, often restrict caloric intake before competitions.
- This practice may negatively impact athlete health and performance.
- Understanding factors influencing dietary adequacy is crucial for optimizing athlete well-being.
Purpose of the Study:
- To investigate the influence of nutrition knowledge, sex, and competitive phase on the dietary adequacy of powerlifters.
- To identify specific nutritional differences between male and female powerlifters.
- To assess how dietary intake changes from the off-season to the precompetition period.
Main Methods:
- Twenty-three powerlifters (10 female) completed questionnaires assessing nutrition knowledge and dietary intake.
- Data were collected during both the off-season and precompetition phases.
- Statistical analyses examined the effects of nutrition knowledge, sex, and time on dietary variables.
Main Results:
- Higher nutrition knowledge correlated with increased intake of fruits, nuts, and vitamin D, and decreased intake of vitamin B2 and B3.
- Male powerlifters with higher knowledge consumed less alcohol and vitamin A; females consumed less sugar and beverage calories.
- During precompetition, alcohol and carbohydrate intake decreased, while meat calories increased. Male powerlifters increased B-vitamins and water, whereas females decreased B-vitamins and sugar.
Conclusions:
- Nutrition knowledge, sex, and competitive season significantly impact powerlifters' dietary intake.
- Enhanced nutrition knowledge is associated with better food and nutrient consumption.
- Female powerlifters require specific attention to B-vitamin and water intake during weight-cutting phases to maintain health and performance.
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