Article
Multidisciplinary Sciences
Pawel Pakosz, Anna Lukanova-Jakubowska, Edyta Luszczki, Mariusz Gnoinski, Oscar Garcia-Garcia
Summary: The study aimed to identify the biomedical signals of short-track athletes through evaluating the effects of monthly strength training on changes in their neuromuscular profile, strength, and power parameters of the lower limb muscles. The research found that a monthly period of strength training can improve the neuromuscular profile of short-track female athletes, especially in aspects such as countermovement jump, flight time, and contraction time.
Article
Public, Environmental & Occupational Health
Xiaoyang Kong, Yongzhao Fan, Hao Wu
Summary: The study compares the differences in countermovement jump (CMJ) and squat jump (SJ) variables in male track and field athletes and explores the correlation of Fast Twitch Fibers (FT), Effect of Pre-stretch (EP), and other variables during the CMJ. The results show that CMJ has higher vertical jump displacement, peak velocity, and peak power compared to SJ. Fast Twitch Fibers and Effect of Pre-stretch are highly correlated with peak power in CMJ. The study suggests that FT and EP may be important indicators of lower limb strength in male track and field athletes.
JOURNAL OF MENS HEALTH
(2022)
Article
Sport Sciences
Matthew Zukowski, Walter Herzog, Matthew J. Jordan
Summary: This study examined the intraday reliability of two novel unilateral loaded jump protocols designed for long track speed skaters and correlated them with performance in speed skating. The results showed that unilateral loaded jump tests are reliable in speed skating athletes and can be used to diagnose and monitor lower-limb maximal muscle power capacity.
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2023)
Article
Sport Sciences
Irineu Loturco, Michael R. Mcguigan, Tomas T. Freitas, Fabio Y. Nakamura, Daniel A. Boullosa, Pedro L. Valenzuela, Lucas A. Pereira, Fernando Pareja-Blanco
Summary: The study found that sprinters achieved similar squat jump heights across a range of loads, regardless of whether they were using free weights or a Smith machine. Additionally, the positive effect of the countermovement on jump performance decreased as the load increased.
Article
Sport Sciences
Subir Gupta, Jakub Baron, Anna Bieniec, Andrzej Swinarew, Arkadiusz Stanula
Summary: The aim of this study was to determine the relationships between vertical jumps (VJ) and various on-ice skating performances of junior ice hockey players (n = 19). DDJ showed significant positive correlations with forward and backward skating speed, while SJ showed strong correlations with backward and maximum skating speed. CMJ was only significantly correlated with backward skating speed. All three VJ modes were inversely and non-significantly correlated with performance decrement index and fatigue index of the RSA test. SMAT did not show significant correlations with VJ or RSA. Therefore, the study concludes that DDJ can predict all ice skating speed tests, SJ can predict backward and maximum speed, and CMJ can predict backward skating speed. RSA performance cannot be predicted by VJ tests, and VJ or RSA cannot predict skating endurance of junior ice hockey players.
Article
Construction & Building Technology
Sajjad Nobakht, Jabbar-Ali Zakeri, Amir Safizadeh
Summary: This paper investigates the effect of vertical load on the longitudinal resistance of ballasted railway track through experimental and numerical analysis. The study demonstrates the increase in track longitudinal stiffness (TLS) and track longitudinal resistance force (TLRF) with increasing vertical load, and validates the numerical modeling based on experimental results.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Health Care Sciences & Services
Noe Labata-Lezaun, Vanessa Gonzalez-Rueda, Luis Llurda-Almuzara, Carlos Lopez-de-Celis, Jacobo Rodriguez-Sanz, Aida Cadellans-Arroniz, Joan Bosch, Albert Perez-Bellmunt
Summary: This study examines the correlation between physical performance and muscle strength with variables obtained from tensiomyography and myotonometry. The results indicate that functional tests should be prioritized in assessing older adults, but further research on muscle quality using technology is recommended.
Article
Chemistry, Multidisciplinary
Stefan Markovic, Milivoj Dopsaj, Saso Tomazic, Anton Kos, Aleksandar Nedeljkovic, Anton Umek
Summary: The study demonstrated that placing an inertial measurement unit on the metatarsal part of the foot can provide valid and reliable data for estimating vertical jump height, suitable for in-field measurement of jump height for athletes. The advantages of this method include the small size of the sensor unit and the ability to simultaneously monitor multiple athletes.
APPLIED SCIENCES-BASEL
(2021)
Article
Mathematics
Bin Yan, Ruiqi Cheng, Haoran Xie, Xiangmin Zhang
Summary: Based on the finite element software ANSYS, this paper studies the nonlinear temperature distribution law of ballastless track and proposes a vertical temperature load model suitable for typical areas in China. The proposed model can compensate for the deficiencies in current specifications and has significant engineering application and popularization value.
Article
Engineering, Geological
Rohit Ralli, Bappaditya Manna, Manoj Datta
Summary: This paper presents the field test results of vertical and batter pile groups with different eccentric moment magnitudes and static load subjected to vertical vibrations. The test results show that batter pile groups are more susceptible to resonance amplification, leading to larger amplitudes of vibrations and potential for soil-pile separation. The study also compares the numerical prediction with the experimental results and highlights the performance difference between batter and vertical pile groups. The findings suggest that batter pile groups offer less resistance to vertical vibrations compared to vertical pile groups.
Article
Multidisciplinary Sciences
Amilton Vieira, Gabriela L. Ribeiro, Victor Macedo, Valdinar de Araujo Rocha Junior, Roberto de Souza Baptista, Carlos Goncalves, Rafael Cunha, James Tufano
Summary: This study investigated the concurrent validity and test-retest reliability of the Jumpo 2 and MyJump 2 apps for estimating jump height, force, velocity, and power. The results showed that both apps provided a reliable estimate of jump height and the mean values of force, velocity, and power. However, the validity of velocity and power estimates from these apps was poor.
Article
Engineering, Mechanical
Lydia Kate Philpott, Stephanie E. Forrester, Katherine A. J. van Lopik, Steven Hayward, Paul P. Conway, Andrew A. West
Summary: This study compared CMJ performance between elite sprinters and high jumpers, found that male athletes jumped higher, and identified that jump height was most strongly correlated with peak power.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART P-JOURNAL OF SPORTS ENGINEERING AND TECHNOLOGY
(2021)
Article
Construction & Building Technology
Tao Shi, Ping Lou
Summary: As ballastless track is exposed to different geographical and meteorological conditions, the impact of temperature changes on its performance must be considered. However, accurately predicting the vertical temperature gradient (VTG) on ballastless track in thermal environments has been challenging. This study develops four machine learning approaches to identify the ballastless track's VTG evolution and proposes a stacking-based hybrid framework to further improve the accuracy of prediction. The results show that the XGBOOST-based method has the best accuracy among the four selected machine learning approaches.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Health Care Sciences & Services
Carlos A. F. Santos, Gislene R. Amirato, Alessandro F. Jacinto, Ana V. Pedrosa, Adriana Caldo-Silva, Antonio R. Sampaio, Nuno Pimenta, Juliana M. B. Santos, Alberto Pochini, Andre L. L. Bachi
Summary: This study aimed to assess the safety and usefulness of vertical jump tests in evaluating physical performance in older women. The results showed that vertical jump tests are safe and accurate, making them useful for monitoring age-related muscle performance loss in robust older women.
Article
Construction & Building Technology
Tao Shi, Ping Lou, Weiqi Zheng, Xingwang Sheng
Summary: This study proposes a hybrid approach that combines experimental and finite element analysis with machine learning techniques to predict the vertical temperature gradient (VTG) of ballastless track induced by solar radiation. The results show that the CATBOOST-based hybrid approach is the most appropriate method for determining the VTG of ballastless track.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Sport Sciences
Petrus Gantois, Fabiano de Souza Fonseca, Fabio Yuzo Nakamura, Leonardo de Sousa Fortes, Jaime Fernandez-Fernandez, Gilmario Ricarte Batista
Summary: The aim of this study was to analyze the load-velocity and load-power relationships in the free-weight back-squat (BSQ) and hexagonal bar deadlift (HBD) exercises. The results showed that HBD had higher maximum strength, load velocity (30-80% 1RM), and power output (30-90% 1RM) compared to BSQ exercise. There was a strong relationship between load velocity and relative intensity for both exercises. The load that maximized power output was 64.6 +/- 2.9% (BSQ) and 59.6 +/- 1.1% (HBD) 1RM.
Article
Nutrition & Dietetics
Flavia M. S. De Branco, Ana Elisa M. Rinaldi, Jaqueline L. Pereira, Hamilton Roschel, Catarina M. Azeredo, Erick P. De Oliveira
Summary: This study evaluated the association between plasma omega-3 (6)-3 fatty acids and appendicular muscle mass index (AMMI) in adults, taking into account protein intake. The results showed a positive correlation between plasma omega-3 (6)-3 fatty acids and AMMI in individuals with low protein intake, indicating potential benefits of omega-3 (6)-3 fatty acid supplementation for muscle mass when protein intake is inadequate.
CLINICAL NUTRITION
(2023)
Article
Medicine, General & Internal
Reinan T. Campos, Livia Lindoso, Renan A. de Sousa, Alberto C. Helito, Bianca P. Ihara, Claudia A. A. Strabelli, Levi M. V. Paradelas, Beatriz O. L. Carneiro, Maria Paula R. Cardoso, Jean Paulo V. de Souza, Marianna R. de M. Freire, Camilla Astley, Moises F. Laurentino, Izabel M. Buscatti, Katia Kozu, Nadia E. Aikawa, Adriana M. E. Sallum, Juliana C. O. Ferreira, Juliana R. Simon, Vivianne S. L. Viana, Ligia B. Queiroz, Bruno Gualano, Hamilton Roschel, Rosa Maria R. Pereira, Ricardo K. Toma, Andreia Watanabe, Patricia M. Grangeiro, Caio B. Casella, Sylvia C. Farhat, Guilherme Polanczyk, Lucia Maria A. Campos, Clovis A. Silva
Summary: This study found that adolescents with chronic immunocompromising diseases experienced emotional and hyperactivity/inattention disturbances during the COVID-19 pandemic. Factors such as female sex, poor sleep quality, intrafamilial violence, changes in medical appointments, and reliable COVID-19 information were associated with these disturbances. The findings highlight the importance of implementing a longitudinal program to protect the mental health of adolescents with and without chronic illnesses during future pandemics.
Article
Endocrinology & Metabolism
Carlos A. A. Merege-Filho, Saulo S. Gil, John P. Kirwan, Igor H. Murai, Wagner S. Dantas, Mariana P. Nucci, Bruno Pastorello, Alisson Padilha de Lima, Paulo R. Bazan, Rosa M. R. Pereira, Ana L. de Sa-Pinto, Fernanda R. Lima, Sonia M. D. Brucki, Roberto de Cleva, Marco A. Santo, Claudia da Costa Leite, Maria Concepcion Garcia Otaduy, Hamilton Roschel, Bruno Gualano
Summary: This study investigated the possible synergistic effects of Roux-en-Y Gastric Bypass (RYGB) and exercise training on brain functional networks. The results showed that exercise superimposed on bariatric surgery (RYGB + ET) increased connectivity between the hypothalamus and sensorial regions, and decreased connectivity in the default mode network and posterior salience network when compared to RYGB alone. This suggests that exercise training plays an important role in the management of post-bariatric patients and improves hypothalamic connectivity and brain functional networks involved in controlling food intake.
INTERNATIONAL JOURNAL OF OBESITY
(2023)
Article
Physiology
Fabio Y. Nakamura, Julio A. Costa, Bruno Travassos, Daniel Ortuno, Jose Pino-Ortega
Summary: The purpose of this study was to investigate the internal training loads of a professional Spanish female futsal team over a period of 26 weeks and examine the impact of training period and/or load on heart-rate variability responses. The study found that lnRMSSD was lower and lnRMSSDCV was higher during preseason compared to in-season. There were also significant correlations between lnRMSSD(CV) and lnRMSSD, as well as lnRMSSDCV and session rating of perceived exertion.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2023)
Review
Sport Sciences
Alberto Filter, Jesus Olivares-Jabalera, Thomas Dos'Santos, Marc Madruga, Jose Maria Oliva Lozano, Alejandro Molina, Alfredo Santalla, Bernardo Requena, Irineu Loturco
Summary: Soccer has become more physically demanding over the years, with an increase in high-intensity actions that play a decisive role in determining match outcomes. However, the traditional reductionist approach used to analyze these actions fails to consider the contextual perspective of soccer performance. This narrative review explores the importance of considering various elements of high-intensity actions, such as trajectory, starting position, and tactical role, in assessing and training soccer players.
INTERNATIONAL JOURNAL OF SPORTS MEDICINE
(2023)
Article
Sport Sciences
Tomas T. Freitas, Lucas A. Pereira, Pedro E. Alcaraz, Paulo H. S. M. Azevedo, Vinicius Zanetti, Nuno B. Pantarotto, Valter P. Reis, Ian Jeffreys, Irineu Loturco
Summary: This study compared the effects of two different 4-week strength-power-speed training protocols on physical performance of young soccer players. The results showed that both training protocols led to similar improvements in overall performance, but at the individual level, the multidirectional training protocol appeared to be more effective in improving change-of-direction ability, while the traditional training protocol was preferred for maximizing vertical jumping capabilities during short soccer pre-seasons.
INTERNATIONAL JOURNAL OF SPORTS MEDICINE
(2023)
Article
Physiology
Rafael Grazioli, Irineu Loturco, Filipe Veeck, Igor Setuain, Laura A. Zandavalli, Martinho Inacio, Ronei S. Pinto, Eduardo L. Cadore
Summary: This study examined the effects of two 8-week resisted-sprint training programs with different loads on the speed-related performance of highly trained soccer players. The results showed that both moderate and heavy-load conditions were effective in improving speed-related abilities. However, individual responses to the training varied.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2023)
Letter
Pediatrics
Gabriel P. Esteves, Fabiula Isoton Novelli, Matheus Molina Meletti, Luiz Augusto Riani Costa, Danilo Marcelo Leite do Prado, Gabriella Berwig Moller, Felipe Miguel Marticorena, Ruth Rocha Franco, Louise Cominato, Claudia Renata Pinto dos Santos, Durval Damiani, Karla F. Goessler, Hamilton Roschel, Bruno Gualano
PEDIATRIC PULMONOLOGY
(2023)
Review
Physiology
Ana J. Pinto, Audrey Bergouignan, Paddy C. Dempsey, Hamilton Roschel, Neville Owen, Bruno Gualano, David W. Dunstan
Summary: Sedentary behaviors can have negative effects on health, such as insulin resistance and vascular dysfunction, while interventions aimed at reducing or interrupting sedentary behavior can lead to small improvements in body weight and other health markers.
PHYSIOLOGICAL REVIEWS
(2023)
Article
Sport Sciences
Carlos Leonardo Figueiredo Machado, Fabio Yuzo Nakamura, Raphael Pereira Fortes, Israel Dias Trapaga, Clarissa Muller Brusco, Matheus Daros Pinto, Ronei Silveira Pinto
Summary: This study verified the effects of high-speed isokinetic fatigue protocol on knee flexion and extension performance and hamstring-to-quadriceps ratio in male professional futsal players. The results showed reductions in knee flexion and extension performance and a decrease in the hamstring-to-quadriceps ratio in fatigue conditions.
INTERNATIONAL JOURNAL OF PERFORMANCE ANALYSIS IN SPORT
(2023)
Article
Sport Sciences
Hugo Silva, Fabio Yuzo Nakamura, Joao Ribeiro, Jose Asian-Clemente, Paulo Roriz, Rui Marcelino
Summary: The aim of this study was to analyze the acceleration and deceleration demands of football players, including duration, initial velocity, and effort magnitude, without minimum effort duration. Male professional players were monitored daily for four weeks using a global position system. The frequency, initial velocities, and average and peak magnitudes of acceleration and deceleration efforts were analyzed. Variations between playing positions were observed, with differences occurring between 0.7 and 2.5 seconds. The study concludes that the measurement of accelerations and decelerations should not be based on a minimum effort duration as it may alter the actual training load of football players.
INTERNATIONAL JOURNAL OF PERFORMANCE ANALYSIS IN SPORT
(2023)
Article
Pediatrics
Camilla Astley, Gabriela Nunes Leal, Saulo Gil, Priscila Suguita, Thais Fink, Vera Bain, Maria Fernanda Badue Pereira, Heloisa Helena Marques, Sofia Sieczkowska, Danilo Prado, Marcos Santos Lima, Camila G. Carneiro, Carlos Alberto Buchpiguel, Clovis Artur Silva, Bruno Gualano
Summary: This study aimed to investigate the potential therapeutic role of exercise on health-related quality of life, coronary flow reserve, cardiac function, cardiorespiratory fitness, and inflammatory and cardiac blood markers in post-discharge MIS-C patients. The results indicated that exercise may have a positive effect on the treatment of these patients.
Article
Physiology
Tomas T. Freitas, Lucas A. Pereira, Santiago Zabaloy, Pedro E. Alcaraz, Ademir F. S. Arruda, Valter P. Mercer, Chris Bishop, Irineu Loturco
Summary: The study investigated the relationships between linear and multidirectional speed performance in elite female rugby sevens players. The results showed that there was no significant association between linear sprint and change-of-direction (COD) velocities. However, there were significant correlations between linear sprint velocity and COD deficit (CODD), as well as between COD velocity and CODD. The study highlighted the importance of considering both linear sprint and COD performances, as well as complementary COD-derived variables, in analyzing multidirectional speed performance.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2023)
Article
Hospitality, Leisure, Sport & Tourism
Geovani Messias da Silva, Mario Antonio de Moura Simim, Fabio Yuzo Nakamura, Victor Coswig, Claudio Oliveira Assumpcao, Alexandre Igor Araripe Medeiros
Summary: This study aimed to investigate the association between sleep quality and mood states or matched results in beach volley-ball athletes. The findings suggest that worse sleep quality is associated with a higher likelihood of experiencing increased fatigue. However, there were no significant differences found in the interference of sleep quality in depression or anger, and the data did not support any hypotheses of interference of sleep in match statistics.
RETOS-NUEVAS TENDENCIAS EN EDUCACION FISICA DEPORTE Y RECREACION
(2023)
