Isokinetics and Exercise Science最新文献

The relationship between asymmetry changes in the slope frequency of bioelectrical activity of the gluteus maximus muscles and experience in short track speed skating athletics 短道速滑运动员臀大肌生物电活动斜率频率的不对称变化与经验的关系

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-07-25 DOI: 10.3233/ies-240004

Mariusz Konieczny, Paweł Pakosz, Przemysław Domaszewski, Elżbieta Skorupska

{"title":"The relationship between asymmetry changes in the slope frequency of bioelectrical activity of the gluteus maximus muscles and experience in short track speed skating athletics","authors":"Mariusz Konieczny, Paweł Pakosz, Przemysław Domaszewski, Elżbieta Skorupska","doi":"10.3233/ies-240004","DOIUrl":"https://doi.org/10.3233/ies-240004","url":null,"abstract":"BACKGROUND: In short track speed skating, there is asymmetric fatigue of the gluteus maximus (GM) muscle resulting from the technique of skating. Scientific reports confirm the relationship between muscle fatigue and its change in the slope frequency of bioelectrical activity. OBJECTIVE: To investigate whether athletic experience in elite short track speed skating can distinguish the asymmetry change in slope frequency of the raw electromyographic signal (EMG) of the GM muscle, influenced by the disparity in experience between junior and senior athletes. METHODS: In the research, an elite group of short track speed skating national team athletes Junior and Senior, participated. Isometric tension GM muscle was tested using the Biering-Sorensen test. RESULTS: The study confirmed differences in the asymmetry of slope frequences EMG signal in GM muscle between juniors and seniors in short track speed skating (p⩽ 0.001). Senior athletes showed greater slope frequences in the right GM muscle (p⩽ 0.002), while juniors showed greater in the left GM muscle (p⩽ 0.008). Intergroup analysis revealed significantly meaningful differences (p⩽ 0.001) in the level of slope frequences of the right GM muscle (juniors vs. seniors), highlighting the asymmetry resulting from experience. CONCLUSIONS: Statistically significant differences in the level of slope frequences of the right gluteus maximus muscle juniors vs. seniors were demonstrated, suggesting asymmetry due to experience and skating technique.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"11 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 useful lean tissue and appendicular skeletal muscle mass indices related to physical performance in patients undergoing hemodialysis 与血液透析患者体能表现相关的有用瘦肉组织和骨骼肌质量指标

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-06-21 DOI: 10.3233/ies-230142

Yan Song, Xuanrui Zhang, Jianxia Lu

{"title":"The useful lean tissue and appendicular skeletal muscle mass indices related to physical performance in patients undergoing hemodialysis","authors":"Yan Song, Xuanrui Zhang, Jianxia Lu","doi":"10.3233/ies-230142","DOIUrl":"https://doi.org/10.3233/ies-230142","url":null,"abstract":"BACKGROUND: Low muscle quantity commonly seen in patients undergoing hemodialysis (HD) is the key contributor of declined physical performance and increases the risk of morbidity and mortality. However, how to normalize muscle mass for operational criteria in this population remains unknown. OBJECTIVE: To identify the clinically useful whole body lean tissue mass (LTM) and appendicular skeletal muscle mass (ASM) indices pertinent to physical performance in patients undertaking HD. METHODS: Whole body LTM in 38 and ASM in 22 patients undergoing HD were measured by body composition monitor (BCM) and dual-energy X-ray absorptiometry (DXA), respectively. Physical performance was assessed by handgrip strength, the incremental shuttle walk test, sit-to-stand tests, gait speed, Short Physical Performance Battery and Duke Activity Status Index. Besides crude LTM and ASM, the other muscle indices were utilized normalizing for height, height squared, weight, body mass index (BMI), fat mass and body fat%. RESULTS: Regardless of BCM or DXA being used, the relationships between different muscle mass indices and physical function were not consistent. While the most useful LTM index which was strongly associated with physical function involved adjustment for height, the strongest (and most useful) ASM index was normalization for BMI. CONCLUSION: The superiority of adjustment for BMI or height (height2) recommended by international sarcopenia consensus is also suitable for patients undergoing HD. Patients’ BMI or fat mass should be considered in estimating prevalence of sarcopenia and evaluating relationship between muscle mass and physical performance.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"81 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Peak moments of lower extremity muscles in women: A comparative study of concentric, eccentric and isometric contractions 女性下肢肌肉的峰值力矩：同心、偏心和等长收缩的比较研究

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-06-19 DOI: 10.3233/ies-240031

Andreas Stotz, Steven Richter, Joel Mason, Astrid Zech

{"title":"Peak moments of lower extremity muscles in women: A comparative study of concentric, eccentric and isometric contractions","authors":"Andreas Stotz, Steven Richter, Joel Mason, Astrid Zech","doi":"10.3233/ies-240031","DOIUrl":"https://doi.org/10.3233/ies-240031","url":null,"abstract":"BACKGROUND: It has been demonstrated that maximum isometric muscle moment can surpass maximum eccentric muscle moment at individually adjusted joint angles in men. However, no information about these muscle mechanics is available for women. OBJECTIVE: To examine the maximum muscle moment hierarchywith equal conditions in women. METHODS: Maximum voluntary concentric, eccentric, and isometric muscle moments of ankle, knee, and hip flexors and extensors as well as hip adductors and abductors were tested in eighteen young women. The sequence of muscle group testing was the same for all subjects, and the sequence of contraction types was randomized. All dynamic contractions were performed at 60∘/s. Peak moment angle of concentric contractions was applied for isometric moment testing. A repeated measures ANOVA with posthoc Bonferroni correction was used to compare means between contraction types. RESULTS: Differences in maximum moment mean values between the three contraction types were apparent for all muscle groups (p< 0.001). Concentric muscle moment was significantly the weakest contraction type. Eccentric contractions generated significantly higher moments than isometric contractions in dorsiflexion, plantarflexion, knee flexion, and hip adduction. CONCLUSION: Significant differences in maximum lower body muscle moments exist between concentric, eccentric, and isometric contractions in women. Compared to previous research for men there appears to be a sex-specific contraction type hierarchy with women exhibiting superior ability to generate higher eccentric muscle moment relative to other contraction types. These results should be considered when designing contractiontype specific intervention programs.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"28 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141573472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Ecologically dynamic flywheel ergometer squat performance characteristics between national Olympic athletes with and without patellar tendinopathy 患有和未患有髌骨肌腱病的国家奥林匹克运动员的生态动态飞轮测力计深蹲表现特征

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-06-19 DOI: 10.3233/ies-230176

Hyoungjoo Choi, Joshua (Sung) H. You

{"title":"Ecologically dynamic flywheel ergometer squat performance characteristics between national Olympic athletes with and without patellar tendinopathy","authors":"Hyoungjoo Choi, Joshua (Sung) H. You","doi":"10.3233/ies-230176","DOIUrl":"https://doi.org/10.3233/ies-230176","url":null,"abstract":"BACKGROUND: Patellar tendinopathy (PT) is a common injury involving inadequate eccentric (ECC) knee extensor contractions during dynamic sports activities. However, any discrepancies in ECC power output between Olympic athletes with and without PT utilizing a flywheel ergometer squat remain to be determined. OBJECTIVE: To compare peak ECC power, concentric (CON) power, the ECC/CON power ratio, and performance speed in female and male athletes with and without PT, respectively. METHODS: Forty Olympic athletes with and without PT were included and analyzed for ECC power, CON power, ECC/CON power ratio, and performance speed (m/s) under varying load conditions, with analyses separated by gender. RESULTS: The ECC power, ECC/CON power ratio, and performance speed of the PT group were significantly lower than those of the non-PT (NPT) group in both genders. ECC and CON power significantly increased with higher inertial loads in the NPT groups, whereas the speed significantly decreased as the inertial load increased in both PT and NPT groups. CONCLUSIONS: Dynamic flywheel ergometer assessments may help in the quantitative diagnosis of athletes with PT under differing dynamic squat conditions. This assessment may be used to create standardized guidelines for squat performance testing, strengthening, conditioning, and rehabilitation.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"40 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 lepidium meyenii (Maca) extract supplementation on oxidative stress, muscle damage, and aerobic capacity after exhaustive endurance exercise 补充鳞叶玛卡（玛咖）提取物对氧化应激、肌肉损伤和耐力运动后有氧能力的影响

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-05-01 DOI: 10.3233/ies-240006

Ming-Che Liu, Pei-Wei Weng, Yu-Hsiu Chien, Meng-Huang Wu, Wei-Bin Hsu, Sheng-Wei Chen, Ming-Ta Yang

{"title":"Effects of lepidium meyenii (Maca) extract supplementation on oxidative stress, muscle damage, and aerobic capacity after exhaustive endurance exercise","authors":"Ming-Che Liu, Pei-Wei Weng, Yu-Hsiu Chien, Meng-Huang Wu, Wei-Bin Hsu, Sheng-Wei Chen, Ming-Ta Yang","doi":"10.3233/ies-240006","DOIUrl":"https://doi.org/10.3233/ies-240006","url":null,"abstract":"BACKGROUND: Maca extract may regulate oxidative stress and muscle damage after exhaustive endurance exercise (EEE); however, its impact on these physiological activities remains obscure. OBJECTIVE: To examine the effects of Maca extract supplementation on oxidative stress, muscle damage and aerobiccapacity after EEE. METHODS: Twenty healthy men were assigned to Maca or placebo groups and received two doses per day for 12 weeks. Pre- and post-EEE tests assessed levels of oxidative stress and muscle damage. The EEE test also recorded metrics such as time to exhaustion, peak oxygen consumption, and maximal and average heart rates. RESULTS: Post-exercise, there was no significant difference in oxidative stress markers between the Maca and placebo groups. However, the Maca group exhibited lower stress levels at both Post-4 and Post-24 in comparison to Post-0, while the placebo group only displayed a decrease at Post-4. Notably, Maca extract supplementation immediately increased catalase activity at Post-0. Though muscle damage markers did not significantly differ, the slope of CK elevation in the Maca group appeared lower than the Placebo group, suggesting Maca’s potential in preventing muscle damage. However, no differences were noted on aerobic capacity markers. CONCLUSIONS: Maca extract may have some beneficial effects on reducing oxidative stress and possibly muscle damage after EEE.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"10 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Validity and reliability of the Valkyria Trainer Balance ® portable force platform in its isometric mode Valkyria Trainer Balance ® 便携式测力平台在等长模式下的有效性和可靠性

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-04-27 DOI: 10.3233/ies-240022

Álvaro Huerta Ojeda, Rodrigo Beltrán-Inostroza, María-Mercedes Yeomans-Cabrera, Maximiliano Torres-Banduc

{"title":"Validity and reliability of the Valkyria Trainer Balance ® portable force platform in its isometric mode","authors":"Álvaro Huerta Ojeda, Rodrigo Beltrán-Inostroza, María-Mercedes Yeomans-Cabrera, Maximiliano Torres-Banduc","doi":"10.3233/ies-240022","DOIUrl":"https://doi.org/10.3233/ies-240022","url":null,"abstract":"BACKGROUND: Isometric maximal voluntary force (IMVF) is essential for individuals’ health and physical performance. Therefore, there is a need for valid and reliable devices to assess IMVF. OBJECTIVE: To determine the validity and reliability of the Valkyria Trainer Balance® portable force platformin its isometric mode. METHODS: Fifty-eight physically healthy individuals (30 men and 28 women) participated in the study. A repeated measures design was used to compare the inter-day test-retest reliability of peak force. The validity of the Valkyria Trainer Balance® force platform was determined by comparing the peak force with the ArtOficio® force platform. The analysis consisted of the intraclass correlation coefficient (ICC), standard error of measurement (SEM), and coefficient of variation (CV). A CV ⩽ 10% and ICC ⩾ 0.80 were considered acceptable reliability, while a ⩽ 5% and ICC ⩾ 0.90 were regarded as high reliability. RESULTS: CV the peak force showed high test-retest inter-day reliability (CV = 4.3% and ICC = 0.99). When comparing both force platforms, there was a 1.1% difference between the two devices. CONCLUSIONS: The results of this study demonstrate that the Valkyria Trainer Balance® force platform is valid and reliable for assessing IMVF in physically healthy individuals.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"41 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Heart rate variability: Obtaining the stress score from SDNN values 心率变异性从 SDNN 值获得压力评分

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-04-02 DOI: 10.3233/ies-230088

Eduardo Salazar-Martínez, José Naranjo Orellana, Elena Sarabia-Cachadiña

{"title":"Heart rate variability: Obtaining the stress score from SDNN values","authors":"Eduardo Salazar-Martínez, José Naranjo Orellana, Elena Sarabia-Cachadiña","doi":"10.3233/ies-230088","DOIUrl":"https://doi.org/10.3233/ies-230088","url":null,"abstract":"BACKGROUND: Heart Rate Variability (HRV) is a non-invasive method of assessing the autonomic nervous system response during exercise and fatigue. OBJECTIVE: The aim of the study was to analyze the validity and feasibility of the stress score index (SS) calculated from SDNN values during exercise. METHODS: 18 Men performed 2 running tests: 1) incremental exercise test; 2) 10-minute constant load test. Subjects underwent HRV analysis during the constant load test, before both tests, and afterward in a seated position at 3 intervals (0’–5’, 5’–10’, 10’–15’). The relationship between SDNN and SD2 was analyzed before, during, and after the test. SS was calculated as 1/SD2*1000. The Bland-Altman test analyzed the reliability of ESS. The bias, limits of agreement (LoA), standard deviation of difference, intraclass correlation (ICC), and person coefficient were calculated. RESULTS: The bias was 0.15 ± 2.54 (UperLOA: 2.54; LowerLOA: -2.23). In all conditions, SD2 and SDNN showed a positive linear relationship (r2 = 0.986); SS and ESS were correlated; and SS and ESS described a positive linear relationship (r2 = 0.993). CONCLUSIONS: The SS index calculation from SDNN is a reliable alternative during exercise.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"93 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140574919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Influence of toe flexor muscle fatigue on stiffness of the intrinsic foot muscles 脚趾屈肌疲劳对足部内在肌肉僵硬度的影响

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-03-29 DOI: 10.3233/ies-240009

Kazushi Yoshida, Mikuto Katsuya, Shogo Takano, Kazuma Hayashi, Taisei Hakozaki, Junji Shinohara

{"title":"Influence of toe flexor muscle fatigue on stiffness of the intrinsic foot muscles","authors":"Kazushi Yoshida, Mikuto Katsuya, Shogo Takano, Kazuma Hayashi, Taisei Hakozaki, Junji Shinohara","doi":"10.3233/ies-240009","DOIUrl":"https://doi.org/10.3233/ies-240009","url":null,"abstract":"BACKGROUND: Assessing intrinsic foot muscles (IFM) is important for understanding their role in loading movements. Additionally, knowledge of the impact of IFM following toe flexor muscle fatigue may aid the teaching of IFM exercises. OBJECTIVE: To examine the influence of toe flexor muscle fatigueon IFM stiffness using ultrasound shear-wave elastography. METHODS: This study included 19 college students. IFM stiffness at 10%, 50%, and 90% body weight was measured using ultrasound-based shear-wave elastography. IFM including the abductor hallucis (AbH), flexor hallucis brevis (FHB), flexor digitorum brevis (FDB), and quadratus plantae (QP) were assessed. The fatigue induction protocol comprised a series of toe flexions at a controlled pace of 40 beats per minute and an amplitude of 75% of the maximum toe flexor strength for a duration of 5 minutes. RESULTS: Muscle stiffness significantly increased with increasing load. Toe flexor muscle fatigue significantly increased the stiffness of the FDB. CONCLUSIONS: IFM stiffness significantly increased with increasing load, and the stiffness of FDB significantly increased in the toe flexor muscle fatigue condition at DLS and SLS loads. The findings of this study will contribute to the study and clinical setting of IFM exercises.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"19 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140888849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 neuro-vestibular-ocular exercises and myofascial release on proprioception and performance in football players with chronic ankle instability 神经-前庭-眼部运动和肌筋膜释放对患有慢性踝关节不稳定的足球运动员的本体感觉和表现的影响

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-03-28 DOI: 10.3233/ies-240002

Büşra Kocakılıç, Elif Tuğçe Çil

{"title":"The effects of neuro-vestibular-ocular exercises and myofascial release on proprioception and performance in football players with chronic ankle instability","authors":"Büşra Kocakılıç, Elif Tuğçe Çil","doi":"10.3233/ies-240002","DOIUrl":"https://doi.org/10.3233/ies-240002","url":null,"abstract":"BACKGROUND AND PURPOSE: Football players often use quick change of direction, sudden acceleration and explosive movements. This is why chronic ankle instability is one of the most common conditions affecting this athlete population. This study investigates the effects of neuro-vestibular-ocular exercises and myofascial release on proprioception and performance in football players with chronic ankle instability. MATERIALS AND METHODS: This randomized controlled clinical trial included 60 football players aged 18–30. The players were randomly divided into two groups. The first group (NVOEG, n=30) was included in the Neuro-Vestibular-ocular exercise training program, while the myofascial release was applied to the second group (MRHOG, n=30). Both protocols were applied for eight weeks. The participants’ Cumberland Ankle Instability Tool (CAIT) scores were assessed before and after the intervention. Proprioception was evaluated by using the joint position sense test. Additionally, kick speed (KS), 30-m sprint, zig-zag agility test (ZAT) and Landing error score system (LESS) tests were applied to evaluate their performance. RESULTS: Post-rehabilitation scores showed significant differences in proprioception and performance parameters compared to pre-scores in both groups. (p<0.05). Significant differences were observed between the NVOEG and MRHOG in the post-test scores, including CAIT for unstable and stable ankle, proprioception for unstable ankle, LESS, ZAT with ball performance, and 30-meter sprint test. CONCLUSIONS: The neuro-vulvular-ocular exercise training protocol had superior results in terms of proprioception and performance parameters in chronic ankle instability management for football players.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"47 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141516009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Comparison of upper and lower trapezius electromyographic activity during Y-raise exercise with and without isometric adduction in healthy volunteers 比较健康志愿者在有无等长内收的 Y 形上举运动中的上下斜方肌肌电活动

IF 0.7 4区医学

Isokinetics and Exercise Science Pub Date : 2024-03-13 DOI: 10.3233/ies-230166

Byeong-Hun Hwang, In-Cheol Jeon

{"title":"Comparison of upper and lower trapezius electromyographic activity during Y-raise exercise with and without isometric adduction in healthy volunteers","authors":"Byeong-Hun Hwang, In-Cheol Jeon","doi":"10.3233/ies-230166","DOIUrl":"https://doi.org/10.3233/ies-230166","url":null,"abstract":"BACKGROUND: Lower trapezius (LT) plays an important role in maintaining the stability of the scapula. Sufficient activation of LT can reduce the risk of rotator cuff tear and shoulder impingement syndrome. The Y-raise exercise has been recommended for effective LT activation. However, the upper trapezius (UT) can be co-activated during universal Y-raise exercise. OBJECTIVE: This study aimed to compare the activity of the UT, LT, and serratus anterior (SA) during Y-raise exercise with and without isometric adduction (IAD) using Thera-Band. METHODS: 21 healthy males voluntarily participated in the study. The participants were asked to perform Y-raise exercise with and without IAD using Thera-Band. Surface electromyography was used to measure the muscle activity of UT, LT, and SA during Y-raise exercise with and without IAD. Paired t-test was used to analyze the significance of the muscle activity of UT, LT, and SA as well as the activity ratio of LT/UT and LT/SA. The significance level was set at α= 0.05. RESULTS: Compared with Y-raise exercise without IAD, the muscle activity of UT and SA decreased (p= 0.001 and p= 0.003, respectively), whereas that of LT increased (p= 0.038) during Y-raise exercise with IAD. Additionally, the activity ratio of LT/UT and LT/SA was greater during Y-raise exercise with IAD (p= 0.001 and p= 0.001, respectively). CONCLUSION: Y-raise exercise with IAD using Thera-Band is recommended as an efficient exercise to selectively activate the LT and increase the activity ratio of LT/UT and LT/SA.","PeriodicalId":54915,"journal":{"name":"Isokinetics and Exercise Science","volume":"5 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140574913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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