Francesco Laterza, Cristian Savoia, Antonio Bovenzi, Rosario D'Onofrio, Dario Pompa, Giuseppe Annino, Vincenzo Manzi
{"title":"Influence of Substitutions and Roles on Kinematic Variables in Professional Soccer Players.","authors":"Francesco Laterza, Cristian Savoia, Antonio Bovenzi, Rosario D'Onofrio, Dario Pompa, Giuseppe Annino, Vincenzo Manzi","doi":"10.1055/a-2334-6458","DOIUrl":"10.1055/a-2334-6458","url":null,"abstract":"<p><p>In soccer, roles and substitutions can make it unclear how different physical capacities decrease over time and impact performance. This investigation aimed to analyze kinematic parameters and their changes over game time, and provide information to effectively prescribe training programs. Data from four professional teams were analyzed, and all the teams competed in the Italian First Division (Serie A). Average metabolic power and high-intensity activities associated with critical moments in the match were considered in the comparisons. The video analysis system STATS SportVU collected the data during official matches. Players were assigned to a specific group according to their time played, categorized as follows: 0-15', 15-30', 30-45', 45-60', 60-75', 75-90', and > 90 min. Different roles, including forwards and wingers (FW), midfielders (MF), center-backs (CB), and side-backs (SB) were also considered. Significant differences (p<0.05) were found in different roles and within roles at different times played. The results highlighted how MF performance decreased over time, whereas CB was unaffected by time. SB spent more time at very high velocity than other roles, independently from the time played. These findings provide valuable information about the physical demands of official soccer matches and could be used to review training prescriptions.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"987-993"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141161760","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}
Robert Trybulski, Adrian Kużdżał, Arkadiusz Stanula, Sebastian Klich, Filipe Manuel Clemente, Adam Kawczyński, Cesar Fernández-de-Las-Peñas
{"title":"Biomechanical Profile after Dry Needling in Mixed Martial Arts.","authors":"Robert Trybulski, Adrian Kużdżał, Arkadiusz Stanula, Sebastian Klich, Filipe Manuel Clemente, Adam Kawczyński, Cesar Fernández-de-Las-Peñas","doi":"10.1055/a-2342-3679","DOIUrl":"10.1055/a-2342-3679","url":null,"abstract":"<p><p>The purpose of this study was to compare the effects of dry needling (DN) intervention on the responses of muscle tone, stiffness, and elasticity, as well as power, pressure pain thresholds, and blood perfusion of the flexor carpi radialis muscle in mixed martial arts (MMA) athletes. Thirty-two trained/developmental men MMA fighters (25.5±4.5 years; 24.5±3 body mass index) participated in a randomized crossover study. Participants underwent a single intervention, receiving both DN and placebo. Laser Doppler flowmetry measured blood perfusion, while a myotonometer assessed the mechanical characteristics of muscle tone, stiffness, and elasticity of the flexor carpi radialis muscle. Pressure pain thresholds (PPT) were measured using an algometer, and maximal forearm muscle force was measured using a hand dynamometer. Outcomes were assessed at baseline, immediately after, and 24 hours and 48 hours post-intervention. A two-way repeated-measures ANOVA revealed significant <i>Intervention*Time</i> interaction for all outcomes: perfusion unit (p<0.001), muscle tone (<i>p</i><0.001), stiffness (<i>p</i><0.001), elasticity (<i>p</i><0.001), PPT (<i>p</i><0.001) and maximal forearm muscle force (<i>p</i><0.001). The current study suggests that a single session of DN enhances muscle recovery, increases muscle strength, and improved PPT in MMA athletes. These positive adaptations appear to last up to 48 hours in some variables.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"968-979"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141300687","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}
Recep Fatih Kayhan, Esranur Terzi, Serdar Bayrakdaroğlu, Halil İbrahim Ceylan, Türker Bıyıklı
{"title":"Isometric Shoulder and Hip Strength Impact on Throwing Velocity and Reactive Strength.","authors":"Recep Fatih Kayhan, Esranur Terzi, Serdar Bayrakdaroğlu, Halil İbrahim Ceylan, Türker Bıyıklı","doi":"10.1055/a-2346-1526","DOIUrl":"10.1055/a-2346-1526","url":null,"abstract":"<p><p>The aim of the study is to examine relationships between shoulder extension-flexion and internal-external rotation strength of professional male handball players with throwing velocity, and the hip extension-flexion strength with horizontal and vertical reactive strength index. Fifteen professional male handball players participating in 1<sup>st</sup> League matches took part in the study. The results showed that isometric shoulder flexion and extension strength significantly predicted stable throwing velocity (r<sup>2</sup>=between 0.27-0.73) and dynamic throwing velocity (r<sup>2</sup>=between 0.30-0.62). In addition, isometric internal and external rotation strength significantly predicted stable throwing velocity (r<sup>2</sup>=between 0.32-0.54) and dynamic throwing velocity (r<sup>2</sup>=between 0.31-0.44). Moreover, isometric hip extension and flexion strength significantly predicted vertical reactive strength index (r<sup>2</sup>=between 0.31-0.45) and horizontal reactive strength index (r<sup>2</sup>=between 0.26-0.42). In conclusion, it was observed that shoulder strength has an enhancing effect on handball players' throwing velocity, while hip strength is a determining factor for the reactive strength index. In this context, it is assumed that shoulder weakness during throwing will affect the accuracy and velocity of throwing by disrupting the angular momentum, while weakness in the hip during the jump phase of the throwing motion will negatively affect the explosive power by limiting stabilization during landing.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"1055-1065"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859697","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}
Ming Li, Youngsuk Kim, Weishuai Guo, Penglei Fan, Junsig Wang, Sukwon Kim
{"title":"Effects of Conditioning Contractions on Lower-Body Explosive Force Post-Static Stretching.","authors":"Ming Li, Youngsuk Kim, Weishuai Guo, Penglei Fan, Junsig Wang, Sukwon Kim","doi":"10.1055/a-2351-8735","DOIUrl":"10.1055/a-2351-8735","url":null,"abstract":"<p><p>The present study assessed the impacts of two distinct protocols, static stretching (StS, 4 sets of 30 seconds) and static stretching combined with conditioning contractions (10 repetitive drop jumps) (SC), on neuromuscular response and rate of force development (RFD) in the lower limbs during squat jumps (SJs) at varying initial knee-joint angles (60°,90°,120°). Twelve participants completed three randomized experimental trials (no intervention, StS intervention, and SC intervention). Except for the intervention segments, each trial included standardized warm-ups and SJs at three different angles. Data were collected using a 3-dimensional injury motion capture system, an electromyography (EMG) recording system, and a force platform. The collected EMG data were subjected to amplitude calculations, while force-time data were used for RFD computation. Neither StS nor SC significantly impacted the average or peak EMG amplitudes of the five muscles examined (p>0.05). However, at an initial knee-joint angle of 120°, the StS group demonstrated significantly lower RFD values at three distinct phases (0-50 ms, 50-100 ms, and 0-peakforce) compared to those seen in the SC and control groups (p<0.05). For activities starting with a knee-joint angle of 120°, it is recommended to either avoid StS or combine it with ten repetitive drop jumps to mitigate any potential negative impact on explosiveness.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"1040-1046"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141446103","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}
Rodrigo Vanerson Passos Neves, Hugo Luca Corrêa, Andrea Lucena Reis, Rosangela Vieira Andrade, Thais Branquinho Araújo, Rafael Lavarini Santos, Fernanda Félix Santos Oliveira, Guilherme Eduardo Barbosa Moraes Araújo, André Victor Gulyas Marra, Thaís Amaral Baracho, Taynah Oliveira Martins, Jessica Mycaelle da Silva Barbosa, Mariana Neiva Garcia, Nicole Messenberg Guimarães Miller, Lysleine Alves Deus, Thiago Dos Santos Rosa
{"title":"Exercise Improves Respiratory Function, Body Fluid and Nitric Oxide in Hemodialysis Patients.","authors":"Rodrigo Vanerson Passos Neves, Hugo Luca Corrêa, Andrea Lucena Reis, Rosangela Vieira Andrade, Thais Branquinho Araújo, Rafael Lavarini Santos, Fernanda Félix Santos Oliveira, Guilherme Eduardo Barbosa Moraes Araújo, André Victor Gulyas Marra, Thaís Amaral Baracho, Taynah Oliveira Martins, Jessica Mycaelle da Silva Barbosa, Mariana Neiva Garcia, Nicole Messenberg Guimarães Miller, Lysleine Alves Deus, Thiago Dos Santos Rosa","doi":"10.1055/a-2348-2684","DOIUrl":"10.1055/a-2348-2684","url":null,"abstract":"<p><p>Emerging evidence suggests that resistance training (RT) can mitigate respiratory muscle weakness in hemodialysis (HD) patients. However, the underlying mechanisms responsible for these beneficial effects remain unclear. The purpose of this study was to assess the impact of periodized RT on respiratory muscle strength and its relationship with handgrip strength (HGS), fat-free mass (FFM), nitric oxide (NO), and interdialytic weight gain (IWG) in HD patients. Thirty-three patients were randomly assigned to two groups: control (CTL; n=18) and RT (n=15). The RT group did not perform any additional exercise training specific to the respiratory tract. Maximal inspiratory (MIP) and expiratory (MEP) pressures, peak expiratory flow (PEF), HGS, FFM, NO, and IWG were measured before and after the intervention period. Participants in the RT group engaged in a 24-week RT program, three times per week. RT resulted in significant improvements in MIP, MEP, PEF, as well as enhancements in HGS, FFM, NO, and IWG (p<0.05). Notably, inverse correlations were observed between MIP (r=-0.37, p=0.03) and PEF (r=-0.4, p=0.02) with IWG. Thus, the amelioration of HGS and FFM coincided with a reduction in respiratory muscle weakness among HD patients. Decreased IWG and increased circulating NO are plausible mechanisms contributing to these improvements.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"994-1004"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141426821","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}
{"title":"Nutritional status should be considered a crucial issue regarding the effects of exercise.","authors":"Tzu-Ting Chuang, Ping-Chen Wang, Chien-Chang Chen, Chih-Chung Shiao","doi":"10.1055/a-2427-6120","DOIUrl":"https://doi.org/10.1055/a-2427-6120","url":null,"abstract":"","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":"45 13","pages":"1023-1024"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142768862","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}
Renata Kelly da Palma, Kátia De Angelis, Guilherme Lemos Shimojo, Marina Rascio Henriques Dutra, Camila Paixão Dos Santos, Nathalia Bernardes, Andressa Bolsoni-Lopes, Rui Curi, João Lucas Gomes, Edilamar Menezes Oliveira, Maria Claudia Irigoyen, Christiane Malfitano
{"title":"Mitigation of Subsequent Ovariectomy Responses through Prior Exercise Training in Rats.","authors":"Renata Kelly da Palma, Kátia De Angelis, Guilherme Lemos Shimojo, Marina Rascio Henriques Dutra, Camila Paixão Dos Santos, Nathalia Bernardes, Andressa Bolsoni-Lopes, Rui Curi, João Lucas Gomes, Edilamar Menezes Oliveira, Maria Claudia Irigoyen, Christiane Malfitano","doi":"10.1055/a-2364-1514","DOIUrl":"10.1055/a-2364-1514","url":null,"abstract":"<p><p>It is well known that cardiometabolic dysfunction gradually increases after menopause, and the sedentary lifestyle can aggravate this condition. Therefore, we compared the effects of aerobic exercise training during the premenopausal period and after ovariectomy (OVX) on metabolic, hemodynamic, and autonomic parameters in an experimental rat model of menopause. The female rats were divided into four groups: control (C), sedentary OVX (SO), trained OVX (TO), and previously trained OVX (PTO). The PTO group was trained for 4 weeks prior to+8 weeks after OVX, and the TO group trained only after OVX on a motor treadmill. Autonomic modulation was evaluated, white adipose tissue (WAT) was removed and weighed, and lipolysis was assessed. The citrate synthase activity in the soleus muscle was analyzed. The trained groups prevented the impairment of baroreceptor reflex sensitivity in relation to SO; however, only PTO reduced the low-frequency band of the pulse interval compared to SO. PTO reduced the weight of WAT compared to the other groups; lipolysis in PTO was similar to that in C. PTO preserved muscle metabolic injury in all types of fibers analyzed. In conclusion, this study suggests that exercise training should be recommended in a premenopausal model to prevent cardiometabolic and autonomic menopause-induced deleterious effects.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"958-967"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141579685","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}
{"title":"Bridging Gaps in Wearable Technology for Exercise and Health Professionals: A Brief Review.","authors":"Moritz Schumann, Cailbhe Doherty","doi":"10.1055/a-2376-6332","DOIUrl":"10.1055/a-2376-6332","url":null,"abstract":"<p><p>The proliferation of wearable devices, especially over the past decade, has been remarkable. Wearable technology is used not only by competitive and recreational athletes but is also becoming an integral part of healthcare and public health settings. However, despite the technological advancements and improved algorithms offering rich opportunities, wearables also face several obstacles. This review aims to highlight these obstacles, including the prerequisites for harnessing wearables to improve performance and health, the need for data accuracy and reproducibility, user engagement and adherence, ethical considerations in data harvesting, and potential future research directions. Researchers, healthcare professionals, coaches, and users should be cognizant of these challenges to unlock the full potential of wearables for public health research, disease surveillance, outbreak prediction, and other important applications. By addressing these challenges, the impact of wearable technology can be significantly enhanced, leading to more precise and personalized health interventions, improved athletic performance, and more robust public health strategies. This paper underscores the transformative potential of wearables and their role in advancing the future of exercise prescription, sports medicine and health.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"949-957"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141855506","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}
Ekaitz Dudagoitia Barrio, Raquel Hernández-García, Rodrigo Ramirez-Campillo, Igor Garcia-Atutxa, Francisca Villanueva-Flores, Antonio García-de-Alcaraz
{"title":"Single-Leg Countermovement Jump Compensation Assessment: Content Validity of a Checklist.","authors":"Ekaitz Dudagoitia Barrio, Raquel Hernández-García, Rodrigo Ramirez-Campillo, Igor Garcia-Atutxa, Francisca Villanueva-Flores, Antonio García-de-Alcaraz","doi":"10.1055/a-2354-3257","DOIUrl":"10.1055/a-2354-3257","url":null,"abstract":"<p><p>Jump actions are common in several sports, and their performance is related to a myriad of biomechanical and physiological factors, with links to athletic performance and imbalances. Currently, a valid, field-based, easy-to-use tool to assess the quality of an explosive jump movement, similar to the required sports movements, is unavailable. Thus, the present study aimed to design and validate a field-based, easy-to-use tool that can be used to assess the quality of movement during an explosive single-leg countermovement jump (SL-CMJ). Ten experts participated in the content validation process for the checklist, including checking item relevance, definition accuracy, and scoring adequacy. Content validity was measured using the Aikens V format. The checklist included the items \"Foot orientation,\" \"Knee valgus/varus,\" \"Internal/external hip flexed orientation,\" \"Pelvis tilt,\" \"Thorax tilt,\" \"Thorax rotation,\" \"Foot pronation/supination,\" \"Asymmetrical hip,\" and \"Lumbo-pelvic association\". The items achieved a 0.60-0.99 in relevance, 0.70-1.00 in definition accuracy, and 0.80-0.83 in scoring adequacies in the Aikens V proof. The results from the context validation process suggest that the tool may be appropriate to assess athletes' quality of explosive movement. Furthermore, the results derived from such assessments may help to design better and safer training interventions.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"1066-1073"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141456893","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}
Laura A Zandavalli, Rafael Grazioli, Mikel Izquierdo, Ibai Garcia-Tabar, Filipe Veeck, Igor Setuain, Giovanni S Ramirez, André L Aroni, Ronei Silveira Pinto, Eduardo L Cadore
{"title":"Physical Performance Changes in Season are Associated with GPS Data in Soccer Players.","authors":"Laura A Zandavalli, Rafael Grazioli, Mikel Izquierdo, Ibai Garcia-Tabar, Filipe Veeck, Igor Setuain, Giovanni S Ramirez, André L Aroni, Ronei Silveira Pinto, Eduardo L Cadore","doi":"10.1055/a-2367-6289","DOIUrl":"10.1055/a-2367-6289","url":null,"abstract":"<p><p>This study investigated the associations between pre-season and in-season performance with external workload in professional soccer players. Twenty-one players completed hamstring strength, countermovement jump (CMJ), 20-m sprint, and Yo-Yo intermittent recovery tests before (pre-season) and after 8 weeks (in-season). External workload (total distance, high-intensity running distance, number of sprints, and power plays) was quantified during this period, and used to divide the average above and below subgroups outcome by outcome for further analyses. Significance was accepted when P≤0.05. Hamstring strength declined from pre- to in-season [- 6%; p=0.014; effect size (ES): - 0.41], while Yo-Yo performance improved (46%; p=0.001; ES: 1.31). When divided by high-intensity running distance, only the below-average subgroup improved CMJ performance (5%; p=0.030). For minutes played, the above-average subgroup improved Yo-Yo performance (41%; p<0.001), but not the below-average subgroup. Furthermore, playing time correlated with improved Yo-Yo performance (p=0.040; r=0.534). Improved 20-m sprint performance associated with more sprints performed (p=0.045; r=- 0.453). Physical capabilities changed over a competitive season and were related to, and differentiated by, external workload. Because hamstring strength decreased and CMJ only improved in players exposed to less high-intensity external load, practitioners should individualize approaches to counteract these conditions when high external workload is performed over the season.</p>","PeriodicalId":14439,"journal":{"name":"International journal of sports medicine","volume":" ","pages":"1047-1054"},"PeriodicalIF":2.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141626756","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}