Mason A Howard, Paola M Rivera, Sean M Lubiak, Christopher E Proppe, Jeffrey T Schmidt, Ethan C Hill
{"title":"不同低负荷血流限制方案对女性肌肉疲劳反应的比较。","authors":"Mason A Howard, Paola M Rivera, Sean M Lubiak, Christopher E Proppe, Jeffrey T Schmidt, Ethan C Hill","doi":"10.1007/s00421-025-05878-z","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>Low-load blood flow restricted (LLBFR) resistance exercise has been demonstrated to accelerate acute muscle fatigue, but these responses may be dependent upon the protocol used. The purpose of this investigation was to examine fatigue characteristics following acute LLBFR resistance exercise with a 75-repetition (75-rep; 1 × 30, 3 × 15), 3 sets to failure (3×), and 1 set to failure (1×) protocols.</p><p><strong>Methods: </strong>Sixteen women randomly performed 75-rep, 3× , and 1× LLBFR protocols consisting of unilateral, submaximal (30% of maximal voluntary isometric contraction; [MVIC]), isokinetic (90°·s<sup>-1</sup>), leg extension muscle actions. Separate two-way, 3 (Condition [75-rep, 3× , 1×]) × 2 (Time [Pretest, Posttest]), repeated-measure ANOVA models were used to examine MVIC, peak twitch torque (PTT), surface electromyography amplitude (sEMG AMP), voluntary activation (VA), and V<sub>wave</sub>/M<sub>wave</sub> ratio.</p><p><strong>Results: </strong>There were no significant (p = 0.516-0.984) interactions for any of the fatigue characteristics. Collapsed across Conditions however, MVIC torque (21.1%), PTT (11.0%), sEMG AMP (1.9%), and VA (4.6%) decreased across Time (p < 0.001-0.011). There was no change in V<sub>wave</sub> /M<sub>wave</sub> ratio (p = 0.639-0.822).</p><p><strong>Conclusions: </strong>Despite differences in set and repetition schemes, all three LLBFR protocols induced comparable decreases in MVIC torque, PTT, sEMG AMP, and VA. The current results highlight the potential efficacy of a single set of LLBFR performed to volitional failure to provoke fatigue responses comparable to multiple set protocols.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparable muscle fatigue responses across different low-load blood flow restriction protocols among women.\",\"authors\":\"Mason A Howard, Paola M Rivera, Sean M Lubiak, Christopher E Proppe, Jeffrey T Schmidt, Ethan C Hill\",\"doi\":\"10.1007/s00421-025-05878-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Purpose: </strong>Low-load blood flow restricted (LLBFR) resistance exercise has been demonstrated to accelerate acute muscle fatigue, but these responses may be dependent upon the protocol used. The purpose of this investigation was to examine fatigue characteristics following acute LLBFR resistance exercise with a 75-repetition (75-rep; 1 × 30, 3 × 15), 3 sets to failure (3×), and 1 set to failure (1×) protocols.</p><p><strong>Methods: </strong>Sixteen women randomly performed 75-rep, 3× , and 1× LLBFR protocols consisting of unilateral, submaximal (30% of maximal voluntary isometric contraction; [MVIC]), isokinetic (90°·s<sup>-1</sup>), leg extension muscle actions. Separate two-way, 3 (Condition [75-rep, 3× , 1×]) × 2 (Time [Pretest, Posttest]), repeated-measure ANOVA models were used to examine MVIC, peak twitch torque (PTT), surface electromyography amplitude (sEMG AMP), voluntary activation (VA), and V<sub>wave</sub>/M<sub>wave</sub> ratio.</p><p><strong>Results: </strong>There were no significant (p = 0.516-0.984) interactions for any of the fatigue characteristics. Collapsed across Conditions however, MVIC torque (21.1%), PTT (11.0%), sEMG AMP (1.9%), and VA (4.6%) decreased across Time (p < 0.001-0.011). There was no change in V<sub>wave</sub> /M<sub>wave</sub> ratio (p = 0.639-0.822).</p><p><strong>Conclusions: </strong>Despite differences in set and repetition schemes, all three LLBFR protocols induced comparable decreases in MVIC torque, PTT, sEMG AMP, and VA. The current results highlight the potential efficacy of a single set of LLBFR performed to volitional failure to provoke fatigue responses comparable to multiple set protocols.</p>\",\"PeriodicalId\":12005,\"journal\":{\"name\":\"European Journal of Applied Physiology\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"European Journal of Applied Physiology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1007/s00421-025-05878-z\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Applied Physiology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s00421-025-05878-z","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSIOLOGY","Score":null,"Total":0}
Comparable muscle fatigue responses across different low-load blood flow restriction protocols among women.
Purpose: Low-load blood flow restricted (LLBFR) resistance exercise has been demonstrated to accelerate acute muscle fatigue, but these responses may be dependent upon the protocol used. The purpose of this investigation was to examine fatigue characteristics following acute LLBFR resistance exercise with a 75-repetition (75-rep; 1 × 30, 3 × 15), 3 sets to failure (3×), and 1 set to failure (1×) protocols.
Methods: Sixteen women randomly performed 75-rep, 3× , and 1× LLBFR protocols consisting of unilateral, submaximal (30% of maximal voluntary isometric contraction; [MVIC]), isokinetic (90°·s-1), leg extension muscle actions. Separate two-way, 3 (Condition [75-rep, 3× , 1×]) × 2 (Time [Pretest, Posttest]), repeated-measure ANOVA models were used to examine MVIC, peak twitch torque (PTT), surface electromyography amplitude (sEMG AMP), voluntary activation (VA), and Vwave/Mwave ratio.
Results: There were no significant (p = 0.516-0.984) interactions for any of the fatigue characteristics. Collapsed across Conditions however, MVIC torque (21.1%), PTT (11.0%), sEMG AMP (1.9%), and VA (4.6%) decreased across Time (p < 0.001-0.011). There was no change in Vwave /Mwave ratio (p = 0.639-0.822).
Conclusions: Despite differences in set and repetition schemes, all three LLBFR protocols induced comparable decreases in MVIC torque, PTT, sEMG AMP, and VA. The current results highlight the potential efficacy of a single set of LLBFR performed to volitional failure to provoke fatigue responses comparable to multiple set protocols.
期刊介绍：
The European Journal of Applied Physiology (EJAP) aims to promote mechanistic advances in human integrative and translational physiology. Physiology is viewed broadly, having overlapping context with related disciplines such as biomechanics, biochemistry, endocrinology, ergonomics, immunology, motor control, and nutrition. EJAP welcomes studies dealing with physical exercise, training and performance. Studies addressing physiological mechanisms are preferred over descriptive studies. Papers dealing with animal models or pathophysiological conditions are not excluded from consideration, but must be clearly relevant to human physiology.
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