Journal of Functional Morphology and Kinesiology最新文献

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Temporal Changes and Between-Competition Differences in the Activity Profile of Elite Hurling Referees. 优秀掷球裁判员活动特征的时间变化与竞赛间差异。
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-13 DOI: 10.3390/jfmk9040271
Aidan J Brady, Michael Scriney, Mark Roantree, Andrew McCarren, Niall M Moyna
{"title":"Temporal Changes and Between-Competition Differences in the Activity Profile of Elite Hurling Referees.","authors":"Aidan J Brady, Michael Scriney, Mark Roantree, Andrew McCarren, Niall M Moyna","doi":"10.3390/jfmk9040271","DOIUrl":"10.3390/jfmk9040271","url":null,"abstract":"<p><p><b>Background/Objectives:</b> This study examined the activity profile of elite hurling referees during games in the National Hurling League (NHL) and All-Ireland Championship (AIC) and across all divisions of the NHL and phases of the AIC. Temporal changes between the first and second half and across the four quarters were also examined. <b>Methods:</b> Data were collected from 36 referees using 10-Hz global positioning system technology during 106 NHL and 85 AIC games and analyzed for duration, total distance, very low-speed movement (<0.69 m·s<sup>-1</sup>), walking (≥0.69-1.59 m·s<sup>-1</sup>), low-speed running (≥1.60-3.08 m·s<sup>-1</sup>), moderate-speed running (≥3.09-4.62 m·s<sup>-1</sup>), high-speed running (HSR) (≥4.63-6.34 m·s<sup>-1</sup>), and very high-speed running (VHSR) (≥6.35 m·s<sup>-1</sup>) distance and peak running speed. <b>Results:</b> Total distance was not significantly different between games in the NHL (120.7 ± 9.4 m·min<sup>-1</sup>) and AIC (122.8 ± 9.9 m·min<sup>-1</sup>, ES = 0.04). There was also no significant difference in HSR distance between the NHL (17.1 ± 6.5 m·min<sup>-1</sup>) and AIC (18.0 ± 7.2 m·min<sup>-1</sup>, ES = 0.10). The only significant difference between the NHL and AIC was in LSR distance, which was higher in the AIC (ES = 0.24). VHSR distance was significantly higher during games in Division 3A+3B (0.7 ± 0.8 m·min<sup>-1</sup>) compared to Division 1A+1B (0.2 ± 0.3 m·min<sup>-1</sup>) and Division 2A+2B (0.1 ± 0.3 m·min<sup>-1</sup>). HSR distance was significantly lower during games in the All-Ireland Series (15.7 ± 6.7 m·min<sup>-1</sup>) compared to games in the Leinster (21.1 ± 8.5 m·min<sup>-1</sup>) and Munster (17.9 ± 5.4 m·min<sup>-1</sup>) Championships. <b>Conclusions:</b> The findings of this study can be used to support the development of physical conditioning programs that are specific to the demands experienced during competitive match play.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11679896/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Automatic Recognition of Motor Skills in Triathlon: A Novel Tool for Measuring Movement Cadence and Cycling Tasks. 铁人三项运动技能的自动识别:一种测量运动节奏和骑行任务的新工具。
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-12 DOI: 10.3390/jfmk9040269
Stuart M Chesher, Carlo Martinotti, Dale W Chapman, Simon M Rosalie, Paula C Charlton, Kevin J Netto
{"title":"Automatic Recognition of Motor Skills in Triathlon: A Novel Tool for Measuring Movement Cadence and Cycling Tasks.","authors":"Stuart M Chesher, Carlo Martinotti, Dale W Chapman, Simon M Rosalie, Paula C Charlton, Kevin J Netto","doi":"10.3390/jfmk9040269","DOIUrl":"10.3390/jfmk9040269","url":null,"abstract":"<p><p><b>Background/Objectives</b>: The purpose of this research was to create a peak detection algorithm and machine learning model for use in triathlon. The algorithm and model aimed to automatically measure movement cadence in all three disciplines of a triathlon using data from a single inertial measurement unit and to recognise the occurrence and duration of cycling task changes. <b>Methods</b>: Six triathletes were recruited to participate in a triathlon while wearing a single trunk-mounted measurement unit and were filmed throughout. Following an initial analysis, a further six triathletes were recruited to collect additional cycling data to train the machine learning model to more effectively recognise cycling task changes. <b>Results</b>: The peak-counting algorithm successfully detected 98.7% of swimming strokes, with a root mean square error of 2.7 swimming strokes. It detected 97.8% of cycling pedal strokes with a root mean square error of 9.1 pedal strokes, and 99.4% of running strides with a root mean square error of 1.2 running strides. Additionally, the machine learning model was 94% (±5%) accurate at distinguishing between 'in-saddle' and 'out-of-saddle' riding, but it was unable to distinguish between 'in-saddle' riding and 'coasting' based on tri-axial acceleration and angular velocity. However, it displayed poor sensitivity to detect 'out-of-saddle' efforts in uncontrolled conditions which improved when conditions were further controlled. <b>Conclusions</b>: A custom peak detection algorithm and machine learning model are effective tools to automatically analyse triathlon performance.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11676696/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142894899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Off-Season Heavy-Load Resistance Training on Lower Limb Mechanical Muscle Function and Physical Performance in Elite Female Team Handball Players. 休赛期大负荷阻力训练对优秀女子手球运动员下肢机械肌肉功能及体能表现的影响。
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-12 DOI: 10.3390/jfmk9040268
Bjørn Fristrup, Peter Krustrup, Anders Kløve Petz, Jesper Bencke, Mette K Zebis, Per Aagaard
{"title":"Effects of Off-Season Heavy-Load Resistance Training on Lower Limb Mechanical Muscle Function and Physical Performance in Elite Female Team Handball Players.","authors":"Bjørn Fristrup, Peter Krustrup, Anders Kløve Petz, Jesper Bencke, Mette K Zebis, Per Aagaard","doi":"10.3390/jfmk9040268","DOIUrl":"10.3390/jfmk9040268","url":null,"abstract":"<p><p><b>Background/Objectives</b>: Team handball involves a high number of rapid and forceful muscle actions. Progressive heavy-load resistance training is known to enhance mechanical muscle function; however, its transfer into functional performance in team handball athletes remains largely unknown. The current study aimed to analyze the effects of eight weeks undulating heavy-load resistance training on lower limb mechanical muscle function and sports-specific performance in elite female team handball players. <b>Methods</b>: Players from the Danish Women's Handball League were block randomized to perform an off-season resistance training program (RT, <i>n</i> = 12, 23.0 ± 2.7 yr) or follow a training-as-usual control program (CON, <i>n</i> = 15, 24.1 ± 3.8 yr). All study participants were tested before and after an eight-week period during the off-season phase, including assessments of maximal isometric knee extensor and flexor peak torque, rate of torque development, countermovement jump (CMJ) power/work, and sports-specific performance (maximal vertical countermovement jump height, sprint capacity, team handball-specific on-court agility). <b>Results</b>: Agility performance improved for RT (-3.5%, <i>p</i> = 0.008), different from CON (<i>p</i> < 0.001) following eight weeks of designated resistance training. Additionally, CON demonstrated impaired agility (+4.0-7.3%, <i>p</i> < 0.05) and 20-m sprint (+1.9%, <i>p</i> = 0.002) performance. Maximal knee extensor peak torque increased in RT (4.5%, <i>p</i> = 0.044). Vertical CMJ flight height (JH) increased in both groups (RT +4.8%, <i>p</i> = 0.012, CON +8.4% <i>p</i> = 0.044); however, jump height relative to ground level (JHGL) increased in RT only (+8.0%, <i>p</i> = 0.013). <b>Conclusions</b>: In conclusion, designated resistance training during the off-season period is effective in maintaining and improving essential components of sports-specific performance and maximal knee extensor strength in elite female team handball players. Comparable protocols of twice-a-week heavy-load resistance training may also be beneficial in other types of intermittent elite team sports (i.e., football, basketball) that include maximal jumping actions, short-distance sprints, and rapid change of direction movements.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11676473/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intra and Inter-Test Reliability of Isometric Hip Adduction Strength Test with Force Plates in Professional Soccer Players. 职业足球运动员髋内收力测试的测试内、测试间信度。
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-12 DOI: 10.3390/jfmk9040270
Jorge Pérez-Contreras, Juan Francisco Loro-Ferrer, Pablo Merino-Muñoz, Felipe Hermosilla-Palma, Brayan Miranda-Lorca, Alejandro Bustamante-Garrido, Felipe Inostroza-Ríos, Ciro José Brito, Esteban Aedo-Muñoz
{"title":"Intra and Inter-Test Reliability of Isometric Hip Adduction Strength Test with Force Plates in Professional Soccer Players.","authors":"Jorge Pérez-Contreras, Juan Francisco Loro-Ferrer, Pablo Merino-Muñoz, Felipe Hermosilla-Palma, Brayan Miranda-Lorca, Alejandro Bustamante-Garrido, Felipe Inostroza-Ríos, Ciro José Brito, Esteban Aedo-Muñoz","doi":"10.3390/jfmk9040270","DOIUrl":"10.3390/jfmk9040270","url":null,"abstract":"<p><p>Assessing the reliability of measurement instruments and equipment is essential to ensure the accurate tracking of athletes over extended periods, minimizing the measurement errors caused by chance or other factors. However, a less common but equally important analysis is the verification of inter-measurement agreement, which complements the reliability results. <b>Purpose:</b> To evaluate the intra- and inter-test reliability of an isometric hip adduction strength and asymmetries test in professional soccer players. <b>Methods</b>: Twenty-three professional male soccer players were evaluated on two occasions, 1 week apart. The force signal was collected using force plates (Pasco PS-2141), and the data processing was performed using Matlab software (R2023a, MathWorks, Natick, MA, USA). The peak force, interval RFD, peak RFD, peak force asymmetry and RFD were analyzed. Intraclass correlation coefficients (ICCs) and coefficients of variation (CV) were calculated to corroborate the intra- and inter-test reliability. In addition, the degree of agreement of the asymmetries was corroborated through the kappa index. <b>Results</b>: The peak force demonstrated an acceptable absolute reliability (CV < 10%) for the intra-test and test-retest condition, an excellent relative intra-test reliability and a good to moderate reliability for the test-retest reliability. However, the peak force asymmetry showed a moderate test-retest reliability and agreement. For the intra-test condition, the RFD variables demonstrate a moderate to excellent relative reliability; however, all demonstrate unacceptable absolute reliability (CV > 10%) in at least one of the evaluation sessions. A moderate to poor test-retest reliability and unacceptable absolute reliability were observed for all the RFD variables. <b>Conclusions</b>: The peak force is the variable with the highest intra- and inter-test reliability, so its use is recommended to longitudinally assess the maximum strength of the adductors in professional soccer players, but not the asymmetry orientation of the peak force. The RFD variables should be interpreted with caution due to their inconsistent reliability, and it is necessary to improve the methods used to achieve adequate reliability.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11679895/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Role of Visual Information Quantity in Fine Motor Performance. 视觉信息量在精细运动表现中的作用。
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-11 DOI: 10.3390/jfmk9040267
Giulia Panconi, Vincenzo Sorgente, Sara Guarducci, Riccardo Bravi, Diego Minciacchi
{"title":"The Role of Visual Information Quantity in Fine Motor Performance.","authors":"Giulia Panconi, Vincenzo Sorgente, Sara Guarducci, Riccardo Bravi, Diego Minciacchi","doi":"10.3390/jfmk9040267","DOIUrl":"10.3390/jfmk9040267","url":null,"abstract":"<p><strong>Background/objectives: </strong>Fine motor movements are essential for daily activities, such as handwriting, and rely heavily on visual information to enhance motor complexity and minimize errors. Tracing tasks provide an ecological method for studying these movements and investigating sensorimotor processes. To date, our understanding of the influence of different quantities of visual information on fine motor control remains incomplete. Our study examined how variations in the amount of visual feedback affect motor performance during handwriting tasks using a graphic pen tablet projecting on a monitor.</p><p><strong>Methods: </strong>Thirty-seven right-handed young adults (20 to 35 years) performed dot-to-dot triangle tracing tasks under nine experimental conditions with varying quantities of visual cues. The conditions and triangle shape rotations were randomized to avoid motor training or learning effects. Motor performance metrics, including absolute error, time of execution, speed, smoothness, and pressure, were analyzed.</p><p><strong>Results: </strong>As visual information increased, absolute error (from 6.64 mm to 2.82 mm), speed (from 99.28 mm/s to 57.19 mm/s), and smoothness (from 4.17 mm<sup>2</sup>/s<sup>6</sup> to 0.80 mm<sup>2</sup>/s<sup>6</sup>) decreased, while time of execution increased (from 12.68 s to 20.85 s), reflecting a trade-off between accuracy and speed. Pressure remained constant across conditions (from 70.35 a.u. to 74.39). Spearman correlation analysis demonstrated a moderate to strong correlation between absolute error and time of execution across conditions. The Friedman test showed significant effects of experimental conditions on all motor performance metrics except for pressure, with Kendall's W values indicating a moderate to strong effect size.</p><p><strong>Conclusion: </strong>These findings deepen our understanding of sensorimotor integration processes and could potentially have implications for optimizing motor skills acquisition and training and developing effective rehabilitation strategies.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11676225/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effects of Reverse Nordic Exercise Training on Measures of Physical Fitness in Youth Karate Athletes. 反向北欧运动训练对青年空手道运动员体能指标的影响。
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-10 DOI: 10.3390/jfmk9040265
Raja Bouguezzi, Senda Sammoud, Yassine Negra, Younés Hachana, Helmi Chaabene
{"title":"The Effects of Reverse Nordic Exercise Training on Measures of Physical Fitness in Youth Karate Athletes.","authors":"Raja Bouguezzi, Senda Sammoud, Yassine Negra, Younés Hachana, Helmi Chaabene","doi":"10.3390/jfmk9040265","DOIUrl":"10.3390/jfmk9040265","url":null,"abstract":"<p><p><b>Background:</b> In karate, the ability to execute high-velocity movements, particularly kicks and punches, is heavily dependent on the strength and power of the lower limb muscles, especially the knee extensors. As such, this study aimed to evaluate the effects of an 8-week eccentric training program utilizing the reverse Nordic exercise (RNE) integrated into karate training compared with regular karate training only on measures of physical fitness in youth karate athletes. <b>Methods:</b> Twenty-seven youth karatekas were recruited and allocated to either RNE group (n = 13; age = 15.35 ± 1.66 years; 7 males and 6 females) or an active control group ([CG]; n = 14; 7 males and 7 females; age = 15.30 ± 1.06 years). To track the changes in measures of physical fitness before and after training, tests to assess linear sprint speed (i.e., 10 m), change of direction (CoD) speed (i.e., modified 505 CoD), vertical jumping (i.e., countermovement jump [CMJ] height) and horizontal jumping distance (i.e., standing long jump [SLJ]), and lower-limb asymmetry score (i.e., the difference between SLJ-dominant and non-dominant legs) were carried out. <b>Results:</b> The results indicated significant group-by-time interactions in all measures of physical fitness (effect size [ES] = 1.03 to 2.89). Post-hoc analyses revealed significant changes in the RNE group across all performance measures (effect size [ES] = 0.33 to 1.63). Additionally, the asymmetry score exhibited a moderate decrease from pre to posttest (∆46.96%, ES = 0.64). In contrast, no significant changes were observed in the CG across all fitness measures. Moreover, the individual response analysis indicated that more karatekas from the RNE group consistently achieved improvements beyond the smallest worthwhile change threshold across all fitness measures. <b>Conclusions:</b> In summary, RNE training is an effective approach to enhance various physical fitness measures besides lower-limb asymmetry scores in youth karatekas and is easy to incorporate into regular karate training. Practitioners are therefore encouraged to consistently integrate RNE training to enhance essential physical fitness components in young karatekas.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11676464/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Learning to Cycle: Why Is the Balance Bike More Efficient than the Bicycle with Training Wheels? The Lyapunov's Answer. 学习骑自行车:为什么平衡自行车比辅助轮自行车更有效率?李亚普诺夫的答案。
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-10 DOI: 10.3390/jfmk9040266
Cristiana Mercê, Keith Davids, Rita Cordovil, David Catela, Marco Branco
{"title":"Learning to Cycle: Why Is the Balance Bike More Efficient than the Bicycle with Training Wheels? The Lyapunov's Answer.","authors":"Cristiana Mercê, Keith Davids, Rita Cordovil, David Catela, Marco Branco","doi":"10.3390/jfmk9040266","DOIUrl":"10.3390/jfmk9040266","url":null,"abstract":"<p><strong>Background/objectives: </strong>Riding a bicycle is a foundational movement skill that can be acquired at an early age. The most common training bicycle has lateral training wheels (BTW). However, the balance bike (BB) has consistently been regarded as more efficient, as children require less time on this bike to successfully transition to a traditional bike (TB). The reasons for this greater efficiency remain unclear, but it is hypothesized that it is due to the immediate balancing requirements for learners. This study aimed to investigate the reasons why the BB is more efficient than the BTW for learning to cycle on a TB.</p><p><strong>Methods: </strong>We compared the variability of the child-bicycle system throughout the learning process with these two types of training bicycles and after transitioning to the TB. Data were collected during the Learning to Cycle Program, with 23 children (6.00 ± 1.2 years old) included. Participants were divided into two experimental training groups, BB (N = 12) and BTW (N = 11). The angular velocity data of the child-bicycle system were collected by four inertial measurement sensors (IMUs), located on the child's vertex and T2 and the bicycle frame and handlebar, in three time phases: (i) before practice sessions, (ii) immediately after practice sessions, and (iii), two months after practice sessions with the TB. The largest Lyapunov exponents were calculated to assess movement variability.</p><p><strong>Conclusions: </strong>Results supported the hypothesis that the BB affords greater functional variability during practice sessions compared to the BTW, affording more functionally adaptive responses in the learning transition to using a TB.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11676224/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advice on Regulating Body Mass in Wrestling from the Most Cited Combat Sport Literature-A Systematic Review. 从被引用最多的格斗运动文献中对摔跤运动中调节体重的建议——系统综述。
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-09 DOI: 10.3390/jfmk9040264
Hrvoje Karninčić, Nenad Žugaj, Krešo Škugor
{"title":"Advice on Regulating Body Mass in Wrestling from the Most Cited Combat Sport Literature-A Systematic Review.","authors":"Hrvoje Karninčić, Nenad Žugaj, Krešo Škugor","doi":"10.3390/jfmk9040264","DOIUrl":"10.3390/jfmk9040264","url":null,"abstract":"<p><p><b>Background</b>: Since studies on the subject of weight reduction in wrestlers vary in opinions regarding health, performance, and legal regulations, a review of the most cited literature in other combat sports was carried out. <b>Methods</b>: By searching the WOS and Scopus scientific databases, the top 60 cited papers were identified, and ultimately, 13 articles that met the inclusion criteria for this review were selected. <b>Findings and conclusions</b>: Apart from the advantages gained in strength and mass through weight reduction, a mental advantage is also obtained. The period between weigh-ins and the actual bouts is considered crucial for the preservation of performance. When the rules allow for a longer recovery period, this enables aggressive, harmful, or prohibited weight reduction methods to be employed by some wrestlers. A chronic reduction in body weight is regarded as a long-term health issue but may be ignored by wrestlers. There has been no progress in the attempt to regulate the problem of rapid weight loss (RWL) within wrestling in the past thirty-five years. If any change is to be brought about, the engagement of all federations, clubs, WADA, and all individuals involved in this issue (athletes, coaches, parents, doctors, etc.) is deemed necessary.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11678334/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 of Hydraulic Resistance on Spatiotemporal Characteristics of Initial Six Steps When Sprinting Under Varying Loads. 不同载荷下液压阻力对短跑前6步时空特性的影响
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-08 DOI: 10.3390/jfmk9040263
Matic Sašek, Žiga Leban, Sara Kranjc, Nejc Šarabon
{"title":"Impact of Hydraulic Resistance on Spatiotemporal Characteristics of Initial Six Steps When Sprinting Under Varying Loads.","authors":"Matic Sašek, Žiga Leban, Sara Kranjc, Nejc Šarabon","doi":"10.3390/jfmk9040263","DOIUrl":"10.3390/jfmk9040263","url":null,"abstract":"<p><p><b>Background:</b> Evaluations of the usability of hydraulic resistance for resisted sprint-training purposes remains rare. Thus, this study compared step-by-step changes in spatiotemporal characteristics during the first 10 m of sprints with varying hydraulic resistance loads. <b>Methods:</b> Fourteen male athletes performed 20 m sprints under minimal (10 N, considered as normal sprint), moderate (100 N), and heavy (150 N) hydraulic resistance loads. Split times at 10 m, contact time (CT), step length (SL), flight time, and step speed (SS) from the first to the sixth step were measured. A two-way repeated measures ANOVA (load × step) and a one-way ANOVA (load) with post hoc comparisons were used to assess the effects on spatiotemporal characteristics and split times, respectively. <b>Results:</b> Under higher loads, the 10 m times were significantly longer (η<sup>2</sup> = 0.79). The CT, SL, and SS varied significantly from step to step within all loads (η<sup>2</sup> = 0.45, 0.41, and 0.54, respectively). The CT, SL, and SS of the first, fourth, fifth, and sixth steps of normal sprint differed significantly from most steps under moderate and heavy load (Cohen's <i>d</i> = -3.09 to 5.39). In contrast, the smallest differences were observed between the second and third step of normal sprint and second to sixth steps under heavy load (Cohen's <i>d</i> = -0.67 to 1.32, and -0.71 to 1.38, respectively). <b>Conclusions:</b> At the same load settings, a hydraulic resistance device induces changes in step characteristics comparable with those of other motorized devices and is therefore a viable option for resisted sprint training. If the goal of the training is to replicate the steps of the initial sprint acceleration phase, ~150 N of hydraulic resistance would be optimal.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11676415/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hands-On Versus Hands-Off Treatment of Hip-Related Nonspecific Musculoskeletal Diseases: A Systematic Review. 髋关节相关非特异性肌肉骨骼疾病的动手与不动手治疗:系统综述
IF 2.6
Journal of Functional Morphology and Kinesiology Pub Date : 2024-12-07 DOI: 10.3390/jfmk9040262
Giulia Franceschi, Irene Scotto, Filippo Maselli, Firas Mourad, Marco Gallotti
{"title":"Hands-On Versus Hands-Off Treatment of Hip-Related Nonspecific Musculoskeletal Diseases: A Systematic Review.","authors":"Giulia Franceschi, Irene Scotto, Filippo Maselli, Firas Mourad, Marco Gallotti","doi":"10.3390/jfmk9040262","DOIUrl":"10.3390/jfmk9040262","url":null,"abstract":"<p><p><b>Background/Objectives:</b> A manual approach combined with therapeutic exercise versus therapeutic exercise alone is a debated issue in the literature. The American College of Rheumatology guidelines \"conditionally recommended against\" manual therapy for the management of hip osteoarthritis. Manual therapy followed by exercise, instead, appears to lead to a faster return to sport than exercise alone for adductor groin pain. There is a need to understand which is the most effective treatment in the management of hip nonspecific musculoskeletal diseases. The aim of this systematic review is to determine which is the most effective treatment between manual therapy combined with therapeutic exercise and therapeutic exercise alone in subjects with hip nonspecific musculoskeletal diseases. <b>Methods:</b> This systematic review complies with the guidelines of the 2020 Prisma Statement. The databases consulted were Pubmed, Cinahl, and Web Of Science. The search was conducted from October 2004 to November 2023. The search string was developed following the PICO model. Free terms or synonyms (e.g., manual therapy, exercise therapy, hip disease, effectiveness) and Medical Subject Headings terms were combined with Boolean operators (AND, OR, NOT). The risk-of-bias assessment was conducted using Version 2 of the Cochrane risk-of-bias tool for randomized controlled trials and the Newcastle Ottawa Scale for observational studies. A qualitative analysis of the results was conducted through narrative synthesis of key concepts. When possible, quantitative analysis was conducted through statistical parameters. <b>Results:</b> Ten articles were analyzed. Results show no differences between the interventions analyzed. Preliminary evidence seems to favor the combined intervention for the outcomes of pain, ROM, and patient satisfaction, with other studies claiming an absence of differences. Only one study claims that therapeutic exercise alone is more effective for quality of life. Preliminary evidence seems to show that manual therapy does not seem to bring any benefit in addition to therapeutic exercise in mid- and long-term functionality, especially for hip osteoarthritis. <b>Conclusions:</b> There seems to be no difference in effectiveness between manual therapy combined with therapeutic exercise and therapeutic exercise alone in individuals with hip nonspecific musculoskeletal diseases.</p>","PeriodicalId":16052,"journal":{"name":"Journal of Functional Morphology and Kinesiology","volume":"9 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11678836/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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