Matthew J Barenie, Albaro Escalera, Stephen J Carter, Hope E Grange, Hunter L Paris, Danielle Krinsky, Abigail S Sogard, Zachary J Schlader, Alyce D Fly, Timothy D Mickleborough
{"title":"草饲和非草饲乳清蛋白的摄入不会减轻阻力训练个体运动引起的肌肉损伤和酸痛:一项随机安慰剂对照试验。","authors":"Matthew J Barenie, Albaro Escalera, Stephen J Carter, Hope E Grange, Hunter L Paris, Danielle Krinsky, Abigail S Sogard, Zachary J Schlader, Alyce D Fly, Timothy D Mickleborough","doi":"10.1080/19390211.2023.2282470","DOIUrl":null,"url":null,"abstract":"<p><p>Eccentric muscle contractions can cause structural damage to muscle cells resulting in temporarily decreased muscle force production and soreness. Prior work indicates pasture-raised dairy products from grass-fed cows have greater anti-inflammatory and antioxidant properties compared to grain-fed counterparts. However, limited research has evaluated the utility of whey protein from pasture-raised, grass-fed cows to enhance recovery compared to whey protein from non-grass-fed cows. Therefore, using a randomized, placebo-controlled design, we compared the effect of whey protein from pasture-raised, grass-fed cows (PRWP) to conventional whey protein (CWP) supplementation on indirect markers of muscle damage in response to eccentric exercise-induced muscle damage (EIMD) in resistance-trained individuals. Thirty-nine subjects (PRWP, <i>n</i> = 14; CWP, <i>n</i> = 12) completed an eccentric squat protocol to induce EIMD with measurements performed at 24, 48, and 72 h of recovery. Dependent variables included: delayed onset muscle soreness (DOMS), urinary titin, maximal isometric voluntary contraction (MIVC), potentiated quadriceps twitch force, countermovement jump (CMJ), and barbell back squat velocity (BBSV). Between-condition comparisons did not reveal any significant differences (<i>p</i> ≤ 0.05) in markers of EIMD <i>via</i> DOMS, urinary titin, MIVC, potentiated quadriceps twitch force, CMJ, or BBSV. In conclusion, neither PRWP nor CWP attenuate indirect markers of muscle damage and soreness following eccentric exercise in resistance-trained individuals.</p>","PeriodicalId":15646,"journal":{"name":"Journal of Dietary Supplements","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Grass-Fed and Non-Grass-Fed Whey Protein Consumption Do Not Attenuate Exercise-Induced Muscle Damage and Soreness in Resistance-Trained Individuals: A Randomized, Placebo-Controlled Trial.\",\"authors\":\"Matthew J Barenie, Albaro Escalera, Stephen J Carter, Hope E Grange, Hunter L Paris, Danielle Krinsky, Abigail S Sogard, Zachary J Schlader, Alyce D Fly, Timothy D Mickleborough\",\"doi\":\"10.1080/19390211.2023.2282470\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Eccentric muscle contractions can cause structural damage to muscle cells resulting in temporarily decreased muscle force production and soreness. Prior work indicates pasture-raised dairy products from grass-fed cows have greater anti-inflammatory and antioxidant properties compared to grain-fed counterparts. However, limited research has evaluated the utility of whey protein from pasture-raised, grass-fed cows to enhance recovery compared to whey protein from non-grass-fed cows. Therefore, using a randomized, placebo-controlled design, we compared the effect of whey protein from pasture-raised, grass-fed cows (PRWP) to conventional whey protein (CWP) supplementation on indirect markers of muscle damage in response to eccentric exercise-induced muscle damage (EIMD) in resistance-trained individuals. Thirty-nine subjects (PRWP, <i>n</i> = 14; CWP, <i>n</i> = 12) completed an eccentric squat protocol to induce EIMD with measurements performed at 24, 48, and 72 h of recovery. Dependent variables included: delayed onset muscle soreness (DOMS), urinary titin, maximal isometric voluntary contraction (MIVC), potentiated quadriceps twitch force, countermovement jump (CMJ), and barbell back squat velocity (BBSV). Between-condition comparisons did not reveal any significant differences (<i>p</i> ≤ 0.05) in markers of EIMD <i>via</i> DOMS, urinary titin, MIVC, potentiated quadriceps twitch force, CMJ, or BBSV. In conclusion, neither PRWP nor CWP attenuate indirect markers of muscle damage and soreness following eccentric exercise in resistance-trained individuals.</p>\",\"PeriodicalId\":15646,\"journal\":{\"name\":\"Journal of Dietary Supplements\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Dietary Supplements\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/19390211.2023.2282470\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2023/11/20 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q3\",\"JCRName\":\"NUTRITION & DIETETICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Dietary Supplements","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/19390211.2023.2282470","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/11/20 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"NUTRITION & DIETETICS","Score":null,"Total":0}
引用次数: 0
摘要
偏心肌肉收缩会对肌肉细胞造成结构性损伤,导致肌肉力量产生暂时减少和酸痛。先前的研究表明,与谷物喂养的奶牛相比,草饲奶牛生产的牧场乳制品具有更强的抗炎和抗氧化特性。然而,有限的研究已经评估了来自牧场饲养的草饲奶牛的乳清蛋白与来自非草饲奶牛的乳清蛋白相比,在提高恢复方面的效用。因此,采用随机、安慰剂对照设计,我们比较了来自牧场饲养的草饲奶牛(PRWP)的乳清蛋白和传统乳清蛋白(CWP)补充对阻力训练个体偏心运动诱导的肌肉损伤(EIMD)的间接肌肉损伤标志物的影响。39名受试者(PRWP, n = 14;CWP, n = 12)完成了偏心深蹲方案,在恢复后24、48和72小时进行测量,以诱发EIMD。相关变量包括:迟发性肌肉酸痛(DOMS)、尿titin、最大等长自主收缩(MIVC)、增强股四头肌抽搐力、反向运动跳跃(CMJ)和杠铃后蹲速度(BBSV)。通过迟发性肌肉酸痛、尿titin、MIVC、增强股四头肌抽搐力、CMJ或BBSV的EIMD标记物在两组间比较中无显著差异(p≤0.05)。总之,PRWP和CWP都不能减弱阻力训练个体偏心运动后肌肉损伤和酸痛的间接标志。
Grass-Fed and Non-Grass-Fed Whey Protein Consumption Do Not Attenuate Exercise-Induced Muscle Damage and Soreness in Resistance-Trained Individuals: A Randomized, Placebo-Controlled Trial.
Eccentric muscle contractions can cause structural damage to muscle cells resulting in temporarily decreased muscle force production and soreness. Prior work indicates pasture-raised dairy products from grass-fed cows have greater anti-inflammatory and antioxidant properties compared to grain-fed counterparts. However, limited research has evaluated the utility of whey protein from pasture-raised, grass-fed cows to enhance recovery compared to whey protein from non-grass-fed cows. Therefore, using a randomized, placebo-controlled design, we compared the effect of whey protein from pasture-raised, grass-fed cows (PRWP) to conventional whey protein (CWP) supplementation on indirect markers of muscle damage in response to eccentric exercise-induced muscle damage (EIMD) in resistance-trained individuals. Thirty-nine subjects (PRWP, n = 14; CWP, n = 12) completed an eccentric squat protocol to induce EIMD with measurements performed at 24, 48, and 72 h of recovery. Dependent variables included: delayed onset muscle soreness (DOMS), urinary titin, maximal isometric voluntary contraction (MIVC), potentiated quadriceps twitch force, countermovement jump (CMJ), and barbell back squat velocity (BBSV). Between-condition comparisons did not reveal any significant differences (p ≤ 0.05) in markers of EIMD via DOMS, urinary titin, MIVC, potentiated quadriceps twitch force, CMJ, or BBSV. In conclusion, neither PRWP nor CWP attenuate indirect markers of muscle damage and soreness following eccentric exercise in resistance-trained individuals.
期刊介绍:
The Journal of Dietary Supplements (formerly the Journal of Nutraceuticals, Functional & Medical Foods) has been retitled to reflect the bold departure from a traditional scientific journal presentation to a leading voice for anyone with a stake in dietary supplements. The journal addresses important issues that meet the broad range of interests from researchers, regulators, marketers, educators, and health professionals from academic, governmental, industry, healthcare, public health, and consumer education sectors. This vital tool not only presents scientific information but interprets it - helping you more readily pass it on to your students, patients, clients, or company.