European Journal of Applied Physiology最新文献

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Causal relationship between strenuous exercise and muscle injury: a Mendelian randomization study with dual samples. 剧烈运动与肌肉损伤之间的因果关系:双样本孟德尔随机研究。
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2024-12-02 DOI: 10.1007/s00421-024-05669-y
Xin Huang, Longxiang Huang, Changhua Liu
{"title":"Causal relationship between strenuous exercise and muscle injury: a Mendelian randomization study with dual samples.","authors":"Xin Huang, Longxiang Huang, Changhua Liu","doi":"10.1007/s00421-024-05669-y","DOIUrl":"10.1007/s00421-024-05669-y","url":null,"abstract":"<p><strong>Background: </strong>Muscle injuries, particularly those resulting from irregular bouts of strenuous exercise, have become a significant public health issue, especially among the athletic population. The physiological mechanisms linking intense physical exertion to muscle damage remain incompletely understood, necessitating further investigation to elucidate the causal pathways involved.</p><p><strong>Purpose: </strong>The objective of this systematic review is to explore the physiological mechanisms that may underlie the causal relationship between strenuous exercise and the incidence of muscle injury.</p><p><strong>Study design: </strong>A systematic review was conducted to synthesize available evidence on the topic.</p><p><strong>Methods: </strong>We utilized advanced Mendelian randomization techniques with dual cohorts to analyze single-nucleotide polymorphisms (SNPs) significantly associated with strenuous exercise (P < 5 × 10^-8). Data on muscle injuries in the wrist and hand muscle, hips, and thighs were sourced from genome-wide association studies (GWAS) databases. A comprehensive sensitivity analysis was performed, incorporating inverse variance weighting, weighted median, MR-Egger regression, multicollinearity assessment, heterogeneity evaluation, and leave-one-out analyses.</p><p><strong>Results: </strong>Our findings reveal a significant positive correlation between strenuous exercise and the risk of muscle injury in the hips and thighs (OR = 1.0046062, 95% CI [0.0004911795, 0.008700143], p = 0.028195794). In contrast, no causal link was identified between strenuous exercise and muscle injury in the wrist and hand muscle (OR = 0.9989059, 95% CI [-0.01131070, 0.009121317], p = 0.8336501).</p><p><strong>Conclusion: </strong>The present systematic review suggests that strenuous exercise is positively associated with an increased risk of muscle injury in the lower limbs. This association appears to be mediated through physiological mechanisms that are more pronounced in the lower extremities compared to the wrist and hand muscle. Further research is warranted to dissect the intricate physiological processes that contribute to this differential susceptibility to injury.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"989-999"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142766105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of experimental knee pain location on gait kinematics. 实验性膝关节疼痛位置对步态运动学的影响
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2024-11-14 DOI: 10.1007/s00421-024-05648-3
Alessio Gallina, Paola Adamo, Giorgia Marino, Corrado Cescon, Francesco Bolzoni, Marco Barbero, Federico Temporiti, Roberto Gatti
{"title":"Effect of experimental knee pain location on gait kinematics.","authors":"Alessio Gallina, Paola Adamo, Giorgia Marino, Corrado Cescon, Francesco Bolzoni, Marco Barbero, Federico Temporiti, Roberto Gatti","doi":"10.1007/s00421-024-05648-3","DOIUrl":"10.1007/s00421-024-05648-3","url":null,"abstract":"<p><strong>Purpose: </strong>In this study, we investigated whether experimental knee pain alters lower limb kinematics and knee arthrokinematics during gait, and if this motor adaptation depends on the spatial characteristics of the painful stimulus.</p><p><strong>Methods: </strong>Twenty-one participants walked on a treadmill for 60-s trials, either without stimulation or while experiencing painful electrical stimulation in the medial, lateral or anterior region of the knee. Perceived pain location was analyzed using pain drawing. Gait spatiotemporal parameters, lower limb kinematics, and dispersion of the knee helical axes on the sagittal plane were quantified for each trial and compared between conditions using ANOVAs with repeated measures or Friedman tests.</p><p><strong>Results: </strong>Pain perception was localized in the area the stimulation was applied to. Compared to walking without pain, participants demonstrated reduced knee extension (1.5 ± 1.5 degrees, p = 0.002) and reduced hip extension (0.8 ± 1.1 degrees, p = 0.037) when pain was induced in the anterior region, but not medially or laterally. Anterior knee pain increased the mean distance of the helical axes during late stance (0.7 [0.3, 1.4], p = 0.010), while medial pain increased both mean distance (0.3 [0.1, 0.5], p = 0.037) and mean angle (1.2 ± 1.4, p = 0.010) during early swing.</p><p><strong>Conclusion: </strong>Acute, experimental knee pain alters gait kinematics and increases the dispersion of the helical axis. These adaptations depend on the spatial characteristics of the painful stimulus. These adaptations may reflect an attempt of the central nervous system to protect the painful tissue while searching for a less painful movement strategy.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"977-987"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11950027/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142616954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact loading exercise induced osteogenesis from childhood to early adulthood in tennis players aged 8-30 years. 冲击负荷运动对8-30岁网球运动员儿童期至成年早期成骨的影响。
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2025-01-19 DOI: 10.1007/s00421-024-05681-2
George Vagenas, Dimitria Palaiothodorou
{"title":"Impact loading exercise induced osteogenesis from childhood to early adulthood in tennis players aged 8-30 years.","authors":"George Vagenas, Dimitria Palaiothodorou","doi":"10.1007/s00421-024-05681-2","DOIUrl":"10.1007/s00421-024-05681-2","url":null,"abstract":"<p><p>Osteogenesis with impact-loading exercise is often assessed by the extra bone growth induced in the loaded arm of tennis players. We used PRISMA to explore % bone mineral content (BMC) and area (BA) asymmetry in players 8-30 years according to weekly training hours, age, sex, maturity, and bone segment. Proper statistics for 70 groups were extracted by two reviewers from 18 eligible studies of low risk of bias (< 35, STROBE) and good quality (> 70%). The quality of the review was high (AMSTAR, 81%). Using \"random effects\" we tested moderation-specific meta-comparisons and meta-regressions. The loaded bones % hypertrophy was higher in BMC (19%) than BA (10%), and, with BMC and BA merged, in boys (17%) than girls (13%), in humerus (19%) than radius-ulna (14%), and in pubertal (19%) players. Weekly training hours were more important (43%) than sex (17%), puberty (14%) and bone (15%) in BMC, and puberty (48%) was more important than weekly training hours (19%), sex (12%), and radius-ulna (5%) in BA. The loaded bones % hypertrophy correlated with weekly training hours highly (> 0.60) in all maturity groups for BMC and BA, and moderately (0.41) in early adults for BA; it also correlated with age (≥ 0.60) in children and peripubertal players, but not (0.037) with starting age. Impact loading exercise favors mineralization twice than bone expansion, while puberty favors bone expansion about three times more than mineralization. The bone gains are higher for boys than girls, and for peripubertal than older players. The bone growth implications are discussed considering limitations and future research.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"909-936"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143002515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Skeletal muscle hypertrophy and enhanced mitochondrial bioenergetics following electrical stimulation exercises in spinal cord injury: a randomized clinical trial. 脊髓损伤患者电刺激锻炼后骨骼肌肥大和线粒体生物能增强:随机临床试验。
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2024-11-22 DOI: 10.1007/s00421-024-05661-6
Ashraf S Gorgey, Refka E Khalil, William Carter, Jeannie Rivers, Qun Chen, Edward J Lesnefsky
{"title":"Skeletal muscle hypertrophy and enhanced mitochondrial bioenergetics following electrical stimulation exercises in spinal cord injury: a randomized clinical trial.","authors":"Ashraf S Gorgey, Refka E Khalil, William Carter, Jeannie Rivers, Qun Chen, Edward J Lesnefsky","doi":"10.1007/s00421-024-05661-6","DOIUrl":"10.1007/s00421-024-05661-6","url":null,"abstract":"<p><p>We examined the combined effects of neuromuscular electrical stimulation-resistance training (NMES-RT) and functional electrical stimulation-lower extremity cycling (FES-LEC) compared to passive movement training (PMT) and FES-LEC on mitochondrial electron transport chain (ETC) complexes and citrate synthase (CS) in adults with SCI. Thirty-two participants with chronic SCI were randomized to 24 weeks of NMES-RT + FES [n = 16 (14 males and 2 females) with an age range of 20-54 years old] or PMT + FES [n = 16 (12 males and 4 females) with an age range of 21-61 years old]. The NMES-RT + FES group underwent 12 weeks of surface NMES-RT using ankle weights followed by an additional 12 weeks of FES-LEC. The PMT + FES performed 12 weeks of passive leg extension movements followed by an additional 12 weeks of FES-LEC. Using repeated measures design, muscle biopsies of the vastus lateralis were performed at baseline (BL), post-intervention 1 (P1) and post-intervention 2 (P2). Spectrophotometer was used to measure ETC complexes (I-III) and CS using aliquots of the homogenized muscle tissue. Magnetic resonance imaging was used to measure skeletal muscle CSAs. A time effect was noted on CS (P = 0.001) with an interaction between both groups (P = 0.01). 46% of the participants per group had zero activities of CI without any changes following both interventions. A time effect was noted in CII (P = 0.023) following both interventions. Finally, NMES-RT + FES increased CIII at P1 compared to BL (P = 0.023) without additional changes in P2 or following PMT + FES intervention. Skeletal muscle hypertrophy may potentially enhance mitochondrial bioenergetics after SCI. NMES-RT is likely to enhance the activities of complex III in sedentary persons with SCI. Clinical trials # NCT02660073.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"1075-1089"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11950031/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Taurine supplementation as a strategy to enhance thermoregulation during low-intensity exercise.
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 DOI: 10.1007/s00421-025-05776-4
Gabriela Ferreira Abud, Ellen Cristini de Freitas
{"title":"Taurine supplementation as a strategy to enhance thermoregulation during low-intensity exercise.","authors":"Gabriela Ferreira Abud, Ellen Cristini de Freitas","doi":"10.1007/s00421-025-05776-4","DOIUrl":"https://doi.org/10.1007/s00421-025-05776-4","url":null,"abstract":"","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143751747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of different postures on the hemodynamics and cardiovascular autonomic control responses to exercise in postural orthostatic tachycardia syndrome. 不同姿势对体位性正位性心动过速综合征患者运动时血液动力学和心血管自主神经控制反应的影响。
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2024-11-23 DOI: 10.1007/s00421-024-05662-5
Carolina P Andrade, Antonio R Zamunér, Franca Barbic, Alberto Porta, Stefano Rigo, Dana A Shiffer, Aurelien Bringard, Nazzareno Fagoni, Guido Ferretti, Raffaello Furlan
{"title":"Effects of different postures on the hemodynamics and cardiovascular autonomic control responses to exercise in postural orthostatic tachycardia syndrome.","authors":"Carolina P Andrade, Antonio R Zamunér, Franca Barbic, Alberto Porta, Stefano Rigo, Dana A Shiffer, Aurelien Bringard, Nazzareno Fagoni, Guido Ferretti, Raffaello Furlan","doi":"10.1007/s00421-024-05662-5","DOIUrl":"10.1007/s00421-024-05662-5","url":null,"abstract":"<p><strong>Purpose: </strong>To assess the effects of two different body positions on the cardiovascular autonomic profile during a single bout of exercise in patients with postural orthostatic tachycardia syndrome (POTS).</p><p><strong>Methods: </strong>Thirteen patients with POTS and thirteen healthy controls (C) participated in the study. ECG, respiration, beat-by-beat arterial pressure and O<sub>2</sub> consumption (VO2) were continuously recorded while on a cycle ergometer in supine and upright positions, before and during exercise (6 min, 50 Watts). Spectral analysis of RR intervals and systolic arterial pressure (SAP) variability provided indexes of cardiac sympathovagal interaction (LF/HF ratio), cardiac vagal modulation (HF<sub>RR</sub>, high-frequency component of RR variability, ~ 0.25 Hz), sympathetic vasomotor control (LF<sub>SAP</sub>, low-frequency component of SAP variability, 0.1 Hz) and baroreflex sensitivity (BRS, α<sub>LF</sub>).</p><p><strong>Results: </strong>While supine, patients with POTS showed lower HF<sub>RR</sub> and α<sub>LF</sub>, greater heart rate (HR), LF/HF and LF<sub>SAP</sub>, compared with C, suggesting cardiovascular sympathetic over-activity and reduced BRS. While sitting upright, POTS showed greater HR and reduced HF<sub>RR</sub> and α<sub>LF</sub> compared with C. During supine exercise, SAP, HR, LF/HF increased and HF<sub>RR</sub> and α<sub>LF</sub> decreased similarly in POTS and C. In POTS, upright sitting exercise was associated with slightly higher <math> <mrow><mover><mi>V</mi> <mo>˙</mo></mover> <msub><mi>O</mi> <mn>2</mn></msub> </mrow> </math> , a greater increase in HR whereas LF<sub>SAP</sub> was lower than in C.</p><p><strong>Conclusion: </strong>Upright exercise was associated with excessive enhancement of HR and a blunted increase of the sympathetic vasomotor control in POTS. Conversely, supine exercise-induced hemodynamic and autonomic changes similar in POTS and C, thus making supine exercise potentially more suitable for physical rehabilitation in POTS.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"1091-1099"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142695201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The blood flow and vascular responses in dynamically exercising skeletal muscles evoked by combination of cold stimulation and voluntary apnea in humans. 结合冷刺激和自主呼吸暂停诱发人体动态运动骨骼肌的血流和血管反应。
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2024-11-26 DOI: 10.1007/s00421-024-05643-8
Ryoko Matsutake, Tomomi Fujimoto, Masashi Ichinose, Kazuhito Watanabe, Naoto Fujii, Takeshi Nishiyasu
{"title":"The blood flow and vascular responses in dynamically exercising skeletal muscles evoked by combination of cold stimulation and voluntary apnea in humans.","authors":"Ryoko Matsutake, Tomomi Fujimoto, Masashi Ichinose, Kazuhito Watanabe, Naoto Fujii, Takeshi Nishiyasu","doi":"10.1007/s00421-024-05643-8","DOIUrl":"10.1007/s00421-024-05643-8","url":null,"abstract":"<p><strong>Purpose: </strong>We evaluated (1) the combined effects of cold stimulation and voluntary breath holding (apnea) on heart rate, blood pressure, blood flow and vascular responses in dynamically exercising muscles in humans, and (2) if some interactions exist between cold stimulation and apnea on the cardiovascular responses.</p><p><strong>Methods: </strong>Nine males and 1 female performed three trials entailing a dynamic two-legged knee extension exercise at a constant workload that elicited heart rates around 100 beats min<sup>-1</sup>. During the trials the participants performed either: (1) immersed their right hand into ice water maintained at 4 °C (cold pressor test; CPT); (2) performed maximal-duration apnea; and (3) performed a combination of CPT and apnea. Leg blood flow (LBF) and cardiac output (CO) were measured simultaneously using two Doppler ultrasound systems.</p><p><strong>Results: </strong>CPT induced a rise in mean arterial pressure (MAP) (P < 0.05) but had no significant effect on CO or exercising leg vascular conductance (LVC). Apnea evoked large pressor responses, bradycardia and decreases in CO, LBF and LVC (all P < 0.05). The increase in MAP induced by combined CPT and apnea was smaller than the sum of those induced separately by CPT or apnea (P < 0.05). Combined CPT and apnea decreased LBF and LVC to a similar extent as apnea alone.</p><p><strong>Conclusion: </strong>Addition of local cold stimulation to apnea does not enhance pressor responses or vasoconstriction within active muscles. This suggests that maximum voluntary apnea evokes massive vasoconstriction, even within exercising muscles, which cannot be enhanced by additional sympathetic stimulation.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"1179-1190"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142715651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effects of age and physical activity status on muscle synergies when walking down slopes. 年龄和体力活动状态对下坡行走时肌肉协同作用的影响。
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2024-11-28 DOI: 10.1007/s00421-024-05679-w
Laura Nash, Vincent C K Cheung, Amitabh Gupta, Roy T H Cheung, Borong He, Matthew Liston, Daniel Thomson
{"title":"The effects of age and physical activity status on muscle synergies when walking down slopes.","authors":"Laura Nash, Vincent C K Cheung, Amitabh Gupta, Roy T H Cheung, Borong He, Matthew Liston, Daniel Thomson","doi":"10.1007/s00421-024-05679-w","DOIUrl":"10.1007/s00421-024-05679-w","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of the current study was to determine whether gait control (muscle synergies) or gait stability (margin of stability (MoS)) were different between younger and older adults when walking on level or downhill slopes. Further, it sought to determine associations between either age or physical activity with muscle synergy widths.</p><p><strong>Methods: </strong>Ten healthy younger (28.1 ± 8.0 years) and ten healthy older (69.5 ± 6.3 years) adults walked at their preferred walking speed on a treadmill at different slopes (0˚, - 4˚ and - 8˚). Muscle synergies were extracted using non-negative matrix factorisation and compared between groups and walking slopes. Correlations between the full width at half maximum (FWHM) of the synergies' activations and weekly recreational physical activity minutes and age were also determined.</p><p><strong>Results: </strong>Younger and older adults both walked with similar muscle synergies across all tested slopes, with 4 synergies accounting for > 85% variance of overall muscle activity in both groups across all tested slopes, with high scalar products (≥ 0.86) for each synergy and slope. It was also demonstrated that physical activity and age had different associations with pooled muscle synergies across slopes, as weekly minutes spent in recreational physical activity were associated with the FWHM of a synergy activated at weight acceptance, whereas age was associated with the FWHM of synergies occurring at push off and foot clearance, respectively.</p><p><strong>Conclusion: </strong>Our results suggest that healthy older and younger adults walk with similar muscle synergies on downhill slopes, and that physical activity and age influence different muscle synergies during walking.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"1139-1156"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142750296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Is there a critical rate of torque development? 扭矩发展是否有一个临界速率?
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2024-11-20 DOI: 10.1007/s00421-024-05647-4
Leonardo Henrique Perinotto Abdalla, Camila Coelho Greco, Benedito Sérgio Denadai
{"title":"Is there a critical rate of torque development?","authors":"Leonardo Henrique Perinotto Abdalla, Camila Coelho Greco, Benedito Sérgio Denadai","doi":"10.1007/s00421-024-05647-4","DOIUrl":"10.1007/s00421-024-05647-4","url":null,"abstract":"<p><p>The objective of this study was to test the hypothesis that neuromuscular fatigue influences the rate of torque development (RTD) in a similar manner to isometric torque. Nine men participated in this study and performed 5-min all-out isometric tests for knee extensors (KE) and plantar flexors (PF) muscles, to determine the end-test torque (ET) and the critical rate of torque development (critical RTD). Additionally, participants performed submaximal constant-torque tests to task failure for KE and PF muscles. Both maximal voluntary contraction and RTD exhibited hyperbolic behavior and reached an asymptote at the end of the 5-min all out isometric test with similar relative values (KE 29.5 ± 5.6% MVC and PF 50.9 ± 2.9% MVC and KE 25.1 ± 3.6 to 28.5 ± 4.4% RTD and PF 48.4 ± 6.5 to 52.4 ± 5.8% RTD). However, both % MVC and % RTD were statistically different between muscle groups (P < 0.05), even when normalized by muscle volume (P < 0.05). Torque and RTD after the constant-torque test were similar to the values of ET and critical RTD (P > 0.05), respectively. In this study, it was observed that neuromuscular fatigue affects RTD and torque similarly, with the magnitude of this effect varying according to the muscle size.</p>","PeriodicalId":12005,"journal":{"name":"European Journal of Applied Physiology","volume":" ","pages":"941-953"},"PeriodicalIF":2.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142675514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Time-continuous analysis of muscle and cerebral oxygenation during repeated treadmill sprints under heat stress: a statistical parametric mapping study. 在热应激下重复跑步机冲刺期间肌肉和大脑氧合的时间连续分析:统计参数映射研究。
IF 2.8 3区 医学
European Journal of Applied Physiology Pub Date : 2025-04-01 Epub Date: 2024-11-29 DOI: 10.1007/s00421-024-05666-1
Hervé Di Domenico, Thomas Rupp, Baptiste Morel, Franck Brocherie, Julien D Périard, Sébastien Racinais, Olivier Girard
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