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triple jump

Ikram Bezrati, Raouf Hammami, Mohamed Kacem Ben Fradj, Domenico Martone, Johnny Padulo, Moncef Feki, Anis Chaouachi, Naziha Kaabachi
Vitamin D is thought to regulate skeletal muscle function and boost physical performance. The aim of this study was to assess the relationship between vitamin D and physical performance in physically active children. This cross-sectional study included 125 children who practice football as a leisure activity. Plasma 25-hydroxyvitamin D (25-OHD) was assessed using a chemiluminescence immunoassay method. Vitamin D inadequacy was defined as 25-OHD < 20 ng/mL. Physical performance testing included measurements of muscle strength (maximal isometric contraction), jumping ability (vertical jump, standing broad jump, triple hop test), linear sprint (10 m and 20 m), and agility (9 × 4-m shuttle run)...
July 13, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Gnaneswaran Nagamani, Thirunavukkarasu Radhika, Quanxin Zhu
In this paper, we investigate the dissipativity and passivity of Markovian jump stochastic neural networks involving two additive time-varying delays. Using a Lyapunov-Krasovskii functional with triple and quadruple integral terms, we obtain delay-dependent passivity and dissipativity criteria for the system. Using a generalized Finsler lemma (GFL), a set of slack variables with special structure are introduced to reduce design conservatism. The dissipativity and passivity criteria depend on the upper bounds of the discrete time-varying delay and its derivative are given in terms of linear matrix inequalities, which can be efficiently solved through the standard numerical software...
October 10, 2016: IEEE Transactions on Neural Networks and Learning Systems
Tang-Qing Yu, Jianfeng Lu, Cameron F Abrams, Eric Vanden-Eijnden
Replica exchange molecular dynamics (REMD) is a popular method to accelerate conformational sampling of complex molecular systems. The idea is to run several replicas of the system in parallel at different temperatures that are swapped periodically. These swaps are typically attempted every few MD steps and accepted or rejected according to a Metropolis-Hastings criterion. This guarantees that the joint distribution of the composite system of replicas is the normalized sum of the symmetrized product of the canonical distributions of these replicas at the different temperatures...
October 3, 2016: Proceedings of the National Academy of Sciences of the United States of America
Igor Magalhães, Martim Bottaro, João R Freitas, Jake Carmo, João P C Matheus, Rodrigo L Carregaro
OBJECTIVES: The aim of this study was to investigate the effects of continuous (48-hour) use of Kinesiotaping (KT) on functional and proprioceptive performance in healthy, physically active men. METHOD: Twenty-six healthy, physically active men (21.8±2.2 years old) were randomly allocated into two groups: 1) Kinesiotaping group (KG, tape applied with 40% tension for rectus femoris activation); 2) Control (CG, tape applied over rectus femoris without additional tension)...
March 18, 2016: Brazilian Journal of Physical Therapy
Mehdi Rouissi, Moktar Chtara, Adam Owen, Angus Burnett, Karim Chamari
BACKGROUND: The ability to change direction is considered of paramount importance in team sports. Currently there is a lack of consensus regarding the most important physical factors that determine change of direction (COD) ability. Therefore, the aim of this study was to examine the relationship strength and explosive power. METHODS: 31 young elite soccer players (mean±SD, age=17.4±0.6year, height=177±0.5cm; leg length=96.9±3.3cm, body-mass=69.0±6.2kg) were recruited...
July 8, 2016: Journal of Sports Medicine and Physical Fitness
Raouf Hammami, Urs Granacher, Issam Makhlouf, David G Behm, Anis Chaouachi
Balance training may have a preconditioning effect on subsequent power training with youth. There are no studies examining whether the sequencing of balance and plyometric training has additional training benefits. The objective was to examine the effect of sequencing balance and plyometric training on the performance of 12-13 years old athletes. Twenty-four young elite soccer players trained twice per week for eight weeks either with an initial four weeks of balance training followed by four weeks of plyometric training (BPT) or four weeks of plyometric training proceeded by four weeks of balance training (PBT)...
March 17, 2016: Journal of Strength and Conditioning Research
Lindsay V Slater, Melissa Vriner, Peter Zapalo, Kat Arbour, Joseph M Hart
Figure skating is an extremely difficult sport that requires a combination of grace, artistry, flexibility, speed, and power. Although many skaters are involved with strength and conditioning programs, there is no current information about differences in off-ice performance measures based on skating discipline and level. The purpose of this study was to compare agility, strength, and flexibility performance based on skating discipline and level. 343 figure skaters from 4 different disciplines (singles, dance, pair, and synchronized skating) and 3 different levels (novice, junior, and senior) completed combine testing with the United States Figure Skating Association...
April 19, 2016: Journal of Strength and Conditioning Research
Rachel A Hildebrand, Bridget Miller, Aric Warren, Deana Hildebrand, Brenda J Smith
Increasing evidence indicates that compromised vitamin D status, as indicated by serum 25-hydroxyvitamin D (25-OH D), is associated with decreased muscle function. The purpose of this study was to determine the vitamin D status of collegiate athletes residing in the southern U.S. and its effects on muscular strength and anaerobic power. Collegiate athletes (n=103) from three separate NCAA athletic programs were recruited for the study. Anthropometrics, vitamin D and calcium intake, and sun exposure data were collected along with serum 25-OH D and physical performance measures (Vertical Jump Test, Shuttle Run Test, Triple Hop for Distance Test and the 1 Repetition Maximum Squat Test) to determine the influence of vitamin D status on muscular strength and anaerobic power...
August 24, 2016: International Journal of Sport Nutrition and Exercise Metabolism
Tobias Wörner, Haraldur B Sigurðsson, Anders Pålsson, Ioannis Kostogiannis, Eva Ageberg
PURPOSE: This study aimed to evaluate patient-reported outcomes as well as lower extremity and trunk muscle function in patients with long-standing hip and groin pain, in comparison with matched, healthy controls. It was hypothesized that patients with long-standing hip and groin pain would report more deficiency on the Copenhagen Hip and Groin Outcome Score (HAGOS) and have worse outcomes on performance-based measures than healthy controls. METHODS: Nineteen patients with long-standing hip and groin pain and 19 healthy, activity level-, age-, gender-, and weight-matched controls were assessed with the HAGOS for self-reported outcomes, and a parallel squat (w/kg), single-leg triple jump (cm), single-leg rise (n), barbell roll-out (% of height), and plank test (s) for performance-based measures...
April 7, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Igor Magalhães, Martim Bottaro, João R Freitas, Jake Carmo, João P C Matheus, Rodrigo L Carregaro
Objectives The aim of this study was to investigate the effects of continuous (48-hour) use of Kinesiotaping (KT) on functional and proprioceptive performance in healthy, physically active men. Method Twenty-six healthy, physically active men (21.8±2.2 years old) were randomly allocated into two groups: 1) Kinesiotaping group (KG, tape applied with 40% tension for rectus femoris activation); 2) Control (CG, tape applied over rectus femoris without additional tension). Subjects attended the laboratory on five separate occasions: 1) familiarization; 2) baseline measurement without tape (BL); 3) immediately post-tape application (T0); 4) 24h (T24); and 5) 48h (T48) post-tape application...
March 18, 2016: Brazilian Journal of Physical Therapy
Juan Francisco Arévalo-Mora, Maria Reina-Bueno, Pedro V Munuera
BACKGROUND: This cross-sectional study aimed to determine whether normal, flat, or high-arched feet corresponded to better performance of certain motor tests in children. METHODS: One hundred eighty-seven children (mean ± SD age, 11.15 ± 1.24 years) were recruited and divided into three groups: 96 with normal feet, 54 with high-arched feet, and 37 with low-arched feet. Nine motor trials were selected to assess motor performance: standing long jump, standing triple jump from each foot, standing vertical jump, shuttle run 10 × 5 m, standing-start 20-m sprint, static balance, dynamic balance on a beam of an inverted gym bench, and agility circuit...
January 2016: Journal of the American Podiatric Medical Association
Sam J Allen, Mark A King, M R Fred Yeadon
The triple jump is an athletic event comprising three phases in which the optimal proportion of each phase to the total distance jumped, termed the phase ratio, is unknown. This study used a whole-body torque-driven computer simulation model of all three phases of the triple jump to investigate optimal technique. The technique of the simulation model was optimised by varying torque generator activation parameters using a Genetic Algorithm in order to maximise total jump distance, resulting in a hop-dominated technique (35...
April 2016: Human Movement Science
Faiçal Farhat, Ines Hsairi, Hamza Baati, B C M Smits-Engelsman, Kaouthar Masmoudi, Radhouane Mchirgui, Chahnez Triki, Wassim Moalla
The purpose of the present study was to examine the effect of a group-based task oriented skills training program on motor and physical ability for children with DCD. It was also investigated if there was an effect on fine motor and handwriting tasks that were not specifically practiced during the training program. Forty-one children aged 6-10years took part in this study. Children were assigned to three groups: an experimental training group consisting of 14 children with DCD, a control non-training group consisted of 13 children with DCD and a control non-training group consisting of 14 typically developed children...
April 2016: Human Movement Science
Kevin R Ford, Laura C Schmitt, Timothy E Hewett, Mark V Paterno
BACKGROUND: The preferred or dominant limb is often subjectively defined by self-report. The purpose was to objectively classify preferred landing leg during landing in athletes previously injured and uninjured. METHODS: Subjects with a history of anterior cruciate ligament reconstruction (n=101) and uninjured controls (n=57) participated. Three trials of a drop vertical jump were collected. Leg dominance was defined as the leg used to kick a ball while landing leg preference was calculated as the leg which landed first during landing trials...
January 2016: Clinical Biomechanics
Milan Čoh, Zlatko Matjačić, Stanislav Peharec, Petar Bačić, Nikola Rausavjević, Krzysztof Maćkala
The purpose of the study was a biodynamic analysis of the kinematic, dynamic and EMG parameters of two types of drop jumps (heights of 25 cm and 45 cm). The sample of measured subjects included four female elite triple jump athletes, with their best results varying from 13.33 to 15.06 meters. The kinematic and dynamic parameters were calculated with the use of a bipedal tensiometric force plate, which was synchronized with nine CCD cameras. A 16-channel electromyography (BTS Pocket, Myolab) was used to analyze the EMG activation of the following muscles: m...
July 2015: Collegium Antropologicum
Krzysztof Maćkala, Ryszard Michalski, Jacek Stodólka, Nikola Rausavljević, Milan Čoh
The main purpose of this study was to examine the relationship between speed, lower extremities explosive power, simple, and complex responses in adolescent athletes from various disciplines. Thirty nine athletes of 16.5 years old, N = 13 sprinters and jumpers, N = 13 soccer players, and N = 13 judokas participated in the experiment. Pearson correlations, a one-way ANOVA and an independent t-test for establishing differences between those three groups of athletes was applied. Additionally the Ward method of hierarchical cluster analysis also was applied...
July 2015: Collegium Antropologicum
A de Vries, J Zwerver, R Diercks, I Tak, S van Berkel, R van Cingel, H van der Worp, I van den Akker-Scheek
Numerous athletes with patellar tendinopathy (PT) use a patellar strap or sports tape during sports. This study's aim was to investigate the short-term effect of these orthoses on patellar tendon pain. Participants performed the single-leg decline squat, vertical jump test, and triple-hop test under four different conditions (patellar strap, sports tape, placebo, and control). Subsequently, participants practiced sports as usual for 2 weeks; during 1 week, they were assigned to one of the four conditions. Pain was measured with the visual analog scale (VAS)...
October 2016: Scandinavian Journal of Medicine & Science in Sports
L Heiniö, R Nikander, H Sievänen
OBJECTIVE: To examine whether different exercise loading is associated with lumbar vertebral texture as assessed with Trabecular Bone Score (TBS). METHODS: Data from 88 Finnish female athletes and 19 habitually active women (reference group) were analyzed. Participants' mean age was 24.3 years (range 17-40 years). Athletes were divided into five specific exercise loading groups according to sport-specific training history: high-impact (triple jumpers and high jumpers), odd-impact (soccer players and squash players), high-magnitude (power lifters), repetitive impact (endurance runners), and repetitive non-impact (swimmers)...
September 2015: Journal of Musculoskeletal & Neuronal Interactions
Paul A Cacolice, Christopher R Carcia, Jason S Scibek, Amy L Phelps
BACKGROUND: Landing with the knee in extension places increased loads on ligamentous restraints at the knee versus landing in flexion. Unfortunately, existing methods to predict landing kinematics require sophisticated equipment and expertise. The purpose of this study was to develop predictive models for sagittal plane tibiofemoral landing kinematics from the results of functional tests. METHODS: Twenty-nine female, NCAA-D1 college athletes (mean ± standard deviation, age = 19...
August 2015: International Journal of Sports Physical Therapy
Einat Kodesh, Eyal Shargal, Rotem Kislev-Cohen, Shany Funk, Lev Dorfman, Gil Samuelly, Jay R Hoffman, Nurit Sharvit
The amount of training days lost to injury during military training has highlighted the need to identify a screening tool to predict injury. One hundred and fifty-eight female soldiers from the Combat Fitness Instructor Course (CFIC) of the Israel Defense Forces volunteered to participate in this study. All soldiers were free of orthopedic and neurologic conditions for at least one month before the study. All participants performed a battery of measurements during the first week of the course. Measures included anthropometric, functional movement screen (FMS), power performances (counter movement jump [CMJ], drop jump, single leg triple hop jump [SLTH], 10-m sprint) and a 2K run...
September 2015: Journal of Sports Science & Medicine
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