Minyoung Kwak, Pasquale J Succi, Brian Benitez, Clara Mitchinson, Michael A Samaan, Mark G Abel, Haley C Bergstrom
{"title":"男性在中等知觉强度的手握力保持失败时的力量和神经肌肉反应。","authors":"Minyoung Kwak, Pasquale J Succi, Brian Benitez, Clara Mitchinson, Michael A Samaan, Mark G Abel, Haley C Bergstrom","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Objectives: </strong>The current study investigated performance fatigability (PF) and time course of changes in force, electromyographic amplitude (EMG AMP) and frequency (EMG MPF), and neuromuscular efficiency (NME) during a sustained, isometric, handgrip hold to failure (HTF) using the rating of perceived exertion (RPE)-Clamp Model.</p><p><strong>Methods: </strong>Twelve males performed a handgrip HTF anchored to RPE=5. The time to task failure (T<sub>lim</sub>), force (N), EMG AMP and MPF, and NME (normalized force/ normalized EMG AMP) were recorded. Analyses included a paired samples t-test for PF at an alpha of p<0.05, 1-way repeated measures ANOVA across time and post-hoc t-tests (p<0.0025) for force, EMG AMP and MPF, and NME responses.</p><p><strong>Results: </strong>The PF (pre- to post- maximal force % decline) was 38.2±11.5%. There were decreases in responses, relative to 0% T<sub>lim</sub>, from 40% to 100% T<sub>lim</sub> (force), at 30%, 60%, and 100% T<sub>lim</sub> (EMG AMP), from 10% to 100% T<sub>lim</sub>(EMP MPF), and from 50% to 65%, and 80% to 100% T<sub>lim</sub> (NME) (p<0.0025).</p><p><strong>Conclusions: </strong>The RPE-Clamp Model in this study demonstrated that pacing strategies may be influenced by the integration of anticipatory, feedforward, and feedback mechanisms, and provided insights into the relationship between neuromuscular and perceptual responses, and actual force generating capacity.</p>","PeriodicalId":16430,"journal":{"name":"Journal of musculoskeletal & neuronal interactions","volume":"24 2","pages":"107-119"},"PeriodicalIF":1.7000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11145316/pdf/","citationCount":"0","resultStr":"{\"title\":\"Force and Neuromuscular Responses During a Handgrip Hold to Failure Anchored to a Moderate Perceptual Intensity in Males.\",\"authors\":\"Minyoung Kwak, Pasquale J Succi, Brian Benitez, Clara Mitchinson, Michael A Samaan, Mark G Abel, Haley C Bergstrom\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objectives: </strong>The current study investigated performance fatigability (PF) and time course of changes in force, electromyographic amplitude (EMG AMP) and frequency (EMG MPF), and neuromuscular efficiency (NME) during a sustained, isometric, handgrip hold to failure (HTF) using the rating of perceived exertion (RPE)-Clamp Model.</p><p><strong>Methods: </strong>Twelve males performed a handgrip HTF anchored to RPE=5. The time to task failure (T<sub>lim</sub>), force (N), EMG AMP and MPF, and NME (normalized force/ normalized EMG AMP) were recorded. Analyses included a paired samples t-test for PF at an alpha of p<0.05, 1-way repeated measures ANOVA across time and post-hoc t-tests (p<0.0025) for force, EMG AMP and MPF, and NME responses.</p><p><strong>Results: </strong>The PF (pre- to post- maximal force % decline) was 38.2±11.5%. There were decreases in responses, relative to 0% T<sub>lim</sub>, from 40% to 100% T<sub>lim</sub> (force), at 30%, 60%, and 100% T<sub>lim</sub> (EMG AMP), from 10% to 100% T<sub>lim</sub>(EMP MPF), and from 50% to 65%, and 80% to 100% T<sub>lim</sub> (NME) (p<0.0025).</p><p><strong>Conclusions: </strong>The RPE-Clamp Model in this study demonstrated that pacing strategies may be influenced by the integration of anticipatory, feedforward, and feedback mechanisms, and provided insights into the relationship between neuromuscular and perceptual responses, and actual force generating capacity.</p>\",\"PeriodicalId\":16430,\"journal\":{\"name\":\"Journal of musculoskeletal & neuronal interactions\",\"volume\":\"24 2\",\"pages\":\"107-119\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11145316/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of musculoskeletal & neuronal interactions\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"NEUROSCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of musculoskeletal & neuronal interactions","FirstCategoryId":"3","ListUrlMain":"","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"NEUROSCIENCES","Score":null,"Total":0}
Force and Neuromuscular Responses During a Handgrip Hold to Failure Anchored to a Moderate Perceptual Intensity in Males.
Objectives: The current study investigated performance fatigability (PF) and time course of changes in force, electromyographic amplitude (EMG AMP) and frequency (EMG MPF), and neuromuscular efficiency (NME) during a sustained, isometric, handgrip hold to failure (HTF) using the rating of perceived exertion (RPE)-Clamp Model.
Methods: Twelve males performed a handgrip HTF anchored to RPE=5. The time to task failure (Tlim), force (N), EMG AMP and MPF, and NME (normalized force/ normalized EMG AMP) were recorded. Analyses included a paired samples t-test for PF at an alpha of p<0.05, 1-way repeated measures ANOVA across time and post-hoc t-tests (p<0.0025) for force, EMG AMP and MPF, and NME responses.
Results: The PF (pre- to post- maximal force % decline) was 38.2±11.5%. There were decreases in responses, relative to 0% Tlim, from 40% to 100% Tlim (force), at 30%, 60%, and 100% Tlim (EMG AMP), from 10% to 100% Tlim(EMP MPF), and from 50% to 65%, and 80% to 100% Tlim (NME) (p<0.0025).
Conclusions: The RPE-Clamp Model in this study demonstrated that pacing strategies may be influenced by the integration of anticipatory, feedforward, and feedback mechanisms, and provided insights into the relationship between neuromuscular and perceptual responses, and actual force generating capacity.
期刊介绍：
The Journal of Musculoskeletal and Neuronal Interactions (JMNI) is an academic journal dealing with the pathophysiology and treatment of musculoskeletal disorders. It is published quarterly (months of issue March, June, September, December). Its purpose is to publish original, peer-reviewed papers of research and clinical experience in all areas of the musculoskeletal system and its interactions with the nervous system, especially metabolic bone diseases, with particular emphasis on osteoporosis. Additionally, JMNI publishes the Abstracts from the biannual meetings of the International Society of Musculoskeletal and Neuronal Interactions, and hosts Abstracts of other meetings on topics related to the aims and scope of JMNI.
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