Taylor P M Leonhardt, Philip D Chilibeck, Jongbum Ko, Gordon A Zello
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Athletes with higher nutrition knowledge consumed more fruits and nuts and less vitamin B2, B3 across all time points ( p < 0.05) and a greater number (73%) were above the recommended dietary allowance for vitamin D compared with athletes with lower nutrition knowledge (50%) ( p < 0.05). Male powerlifters with higher nutrition knowledge consumed less alcohol and vitamin A than male powerlifters with lower nutrition knowledge ( p < 0.05). Female powerlifters with higher nutrition knowledge consumed less sugar and beverage calories than female powerlifters with lower nutrition knowledge ( p < 0.05). Intake of alcohol and carbohydrate decreased, and meat calories increased from off-season to precompetition ( p < 0.05). Male powerlifters increased B-vitamins, whereas female powerlifters decreased B-vitamin and sugar consumption approaching competition ( p < 0.05). Male powerlifters increased water consumption versus female powerlifters approaching competition (sex × time, p < 0.05). There was no effect of nutrition knowledge on dietary changes approaching competition. Nutrition knowledge, sex, and competitive season affect dietary intake of powerlifters. A higher nutrition knowledge predicts a higher intake of some foods and nutrients important for health and performance. Female powerlifters should pay close attention to the intake of B-vitamins and water before competitions when many are trying to cut weight.</p>","PeriodicalId":17129,"journal":{"name":"Journal of Strength and Conditioning Research","volume":" ","pages":"1924-1932"},"PeriodicalIF":2.5000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nutrition Knowledge and Dietary Adequacy in Powerlifters.\",\"authors\":\"Taylor P M Leonhardt, Philip D Chilibeck, Jongbum Ko, Gordon A Zello\",\"doi\":\"10.1519/JSC.0000000000004887\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Abstract: </strong>Leonhardt, TPM, Chilibeck, PD, Ko, J, and Zello, GA. Nutrition knowledge and dietary adequacy in powerlifters. J Strength Cond Res 38(11): 1924-1932, 2024-Athletes competing in weight categories (e.g., powerlifters) often restrict food intake approaching competition, which may be detrimental to health and performance. Our purpose was to assess the effect of nutrition knowledge, sex, and time (off-season versus precompetition, when athletes often cut weight) on dietary adequacy in powerlifters. Twenty-three powerlifters (10 females; 30.7 ± 11.2 years) completed questionnaires to assess nutrition knowledge and dietary adequacy. Athletes with higher nutrition knowledge consumed more fruits and nuts and less vitamin B2, B3 across all time points ( p < 0.05) and a greater number (73%) were above the recommended dietary allowance for vitamin D compared with athletes with lower nutrition knowledge (50%) ( p < 0.05). Male powerlifters with higher nutrition knowledge consumed less alcohol and vitamin A than male powerlifters with lower nutrition knowledge ( p < 0.05). Female powerlifters with higher nutrition knowledge consumed less sugar and beverage calories than female powerlifters with lower nutrition knowledge ( p < 0.05). Intake of alcohol and carbohydrate decreased, and meat calories increased from off-season to precompetition ( p < 0.05). Male powerlifters increased B-vitamins, whereas female powerlifters decreased B-vitamin and sugar consumption approaching competition ( p < 0.05). Male powerlifters increased water consumption versus female powerlifters approaching competition (sex × time, p < 0.05). There was no effect of nutrition knowledge on dietary changes approaching competition. Nutrition knowledge, sex, and competitive season affect dietary intake of powerlifters. A higher nutrition knowledge predicts a higher intake of some foods and nutrients important for health and performance. 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引用次数: 0
摘要
摘要： Leonhardt、TPM、Chilibeck、PD、Ko、J 和 Zello、GA。力量举运动员的营养知识和膳食充足性。J Strength Cond Res XX(X)：000-000，2024-参加重量级比赛的运动员（如举重运动员）在临近比赛时往往会限制食物摄入量，这可能会损害健康和成绩。我们的目的是评估营养知识、性别和时间（休赛期与赛前，此时运动员经常减重）对举重运动员膳食充足性的影响。23 名举重运动员（10 名女性；30.7 ± 11.2 岁）填写了评估营养知识和膳食充足性的问卷。与营养知识水平较低的运动员（50%）相比，营养知识水平较高的运动员在所有时间点上都摄入了更多的水果和坚果，摄入了较少的维生素 B2 和 B3（P < 0.05），而且有更多的运动员（73%）的维生素 D 摄入量超过了推荐的膳食摄入量（P < 0.05）。营养知识水平较高的男性举重运动员比营养知识水平较低的男性举重运动员摄入的酒精和维生素 A 更少（P < 0.05）。与营养知识水平较低的女性举重运动员相比，营养知识水平较高的女性举重运动员摄入的糖分和饮料热量较少（P < 0.05）。从淡季到赛前，酒精和碳水化合物的摄入量减少，肉类热量增加（p < 0.05）。临近比赛时，男性举重运动员增加了维生素 B 的摄入量，而女性举重运动员则减少了维生素 B 和糖的摄入量（p < 0.05）。临近比赛时，男性举重运动员比女性举重运动员增加了饮水量（性别×时间，P＜0.05）。营养知识对临近比赛时的饮食变化没有影响。营养知识、性别和比赛季节会影响举重运动员的饮食摄入量。营养知识越丰富，对健康和成绩越重要的一些食物和营养素的摄入量就越高。女性举重运动员在比赛前应密切关注 B 族维生素和水的摄入量，因为许多人都在努力减轻体重。
Nutrition Knowledge and Dietary Adequacy in Powerlifters.
Abstract: Leonhardt, TPM, Chilibeck, PD, Ko, J, and Zello, GA. Nutrition knowledge and dietary adequacy in powerlifters. J Strength Cond Res 38(11): 1924-1932, 2024-Athletes competing in weight categories (e.g., powerlifters) often restrict food intake approaching competition, which may be detrimental to health and performance. Our purpose was to assess the effect of nutrition knowledge, sex, and time (off-season versus precompetition, when athletes often cut weight) on dietary adequacy in powerlifters. Twenty-three powerlifters (10 females; 30.7 ± 11.2 years) completed questionnaires to assess nutrition knowledge and dietary adequacy. Athletes with higher nutrition knowledge consumed more fruits and nuts and less vitamin B2, B3 across all time points ( p < 0.05) and a greater number (73%) were above the recommended dietary allowance for vitamin D compared with athletes with lower nutrition knowledge (50%) ( p < 0.05). Male powerlifters with higher nutrition knowledge consumed less alcohol and vitamin A than male powerlifters with lower nutrition knowledge ( p < 0.05). Female powerlifters with higher nutrition knowledge consumed less sugar and beverage calories than female powerlifters with lower nutrition knowledge ( p < 0.05). Intake of alcohol and carbohydrate decreased, and meat calories increased from off-season to precompetition ( p < 0.05). Male powerlifters increased B-vitamins, whereas female powerlifters decreased B-vitamin and sugar consumption approaching competition ( p < 0.05). Male powerlifters increased water consumption versus female powerlifters approaching competition (sex × time, p < 0.05). There was no effect of nutrition knowledge on dietary changes approaching competition. Nutrition knowledge, sex, and competitive season affect dietary intake of powerlifters. A higher nutrition knowledge predicts a higher intake of some foods and nutrients important for health and performance. Female powerlifters should pay close attention to the intake of B-vitamins and water before competitions when many are trying to cut weight.
期刊介绍：
The editorial mission of The Journal of Strength and Conditioning Research (JSCR) is to advance the knowledge about strength and conditioning through research. A unique aspect of this journal is that it includes recommendations for the practical use of research findings. While the journal name identifies strength and conditioning as separate entities, strength is considered a part of conditioning. This journal wishes to promote the publication of peer-reviewed manuscripts which add to our understanding of conditioning and sport through applied exercise science.
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