College of Kinesiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada ; and.
College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
J Strength Cond Res. 2024 Nov 1;38(11):1924-1932. doi: 10.1519/JSC.0000000000004887. Epub 2024 Jul 23.
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.
列昂哈特，TPM，奇利贝克，PD，高，J，泽洛，GA。力量举运动员的营养知识和饮食充足度。J 力量与调节研究 38（11）：1924-1932，2024-参加重量级别比赛的运动员（例如力量举运动员）经常在接近比赛时限制食物摄入，这可能对健康和表现有害。我们的目的是评估营养知识、性别和时间（淡季与赛前，运动员经常在赛前减重）对力量举运动员饮食充足度的影响。23 名力量举运动员（10 名女性；30.7±11.2 岁）完成了评估营养知识和饮食充足度的问卷。营养知识较高的运动员在所有时间点都摄入了更多的水果和坚果，维生素 B2、B3 摄入较少（p<0.05），并且有更多的运动员（73%）维生素 D 摄入量高于推荐膳食摄入量，而营养知识较低的运动员（50%）（p<0.05）。营养知识较高的男性力量举运动员比营养知识较低的男性力量举运动员摄入的酒精和维生素 A 更少（p<0.05）。营养知识较高的女性力量举运动员比营养知识较低的女性力量举运动员摄入的糖和饮料卡路里更少（p<0.05）。从淡季到赛前，酒精和碳水化合物的摄入量减少，肉类卡路里增加（p<0.05）。男性力量举运动员增加了 B 族维生素，而女性力量举运动员在接近比赛时减少了 B 族维生素和糖的摄入（p<0.05）。与女性力量举运动员相比，男性力量举运动员在接近比赛时增加了水的摄入量（性别×时间，p<0.05）。营养知识对接近比赛时的饮食变化没有影响。营养知识、性别和比赛季节影响力量举运动员的饮食摄入。营养知识较高预示着某些对健康和表现重要的食物和营养素的摄入量较高。当许多女性试图在比赛前减重时，她们应该密切注意 B 族维生素和水的摄入。
