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https://www.readbyqxmd.com/read/29145504/quantifying-performance-on-an-outdoor-agility-drill-using-foot-mounted-inertial-measurement-units
#1
Antonia M Zaferiou, Lauro Ojeda, Stephen M Cain, Rachel V Vitali, Steven P Davidson, Leia Stirling, Noel C Perkins
Running agility is required for many sports and other physical tasks that demand rapid changes in body direction. Quantifying agility skill remains a challenge because measuring rapid changes of direction and quantifying agility skill from those measurements are difficult to do in ways that replicate real task/game play situations. The objectives of this study were to define and to measure agility performance for a (five-cone) agility drill used within a military obstacle course using data harvested from two foot-mounted inertial measurement units (IMUs)...
2017: PloS One
https://www.readbyqxmd.com/read/29140914/sequencing-effects-of-neuromuscular-training-on-physical-fitness-in-youth-elite-tennis-players
#2
Jaime Fernandez-Fernandez, Urs Granacher, David Sanz-Rivas, Jose Manuel Sarabia Marín, Jose Luis Hernandez-Davo, Manuel Moya
Fernandez-Fernandez, J, Granacher, U, Sanz-Rivas, D, Sarabia Marín, JM, Hernandez-Davo, JL, and Moya, M. Sequencing effects of neuromuscular training on physical fitness in youth elite tennis players. J Strength Cond Res XX(X): 000-000, 2017-The aim of this study was to analyze the effects of a 5-week neuromuscular training (NMT) implemented before or after a tennis session in prepubertal players on selected components of physical fitness. Sixteen elite and well-trained tennis players with a mean age of 12...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29134974/differences-in-physical-physiological-and-motor-performance-traits-between-volleyball-and-basketball-athletes-in-a-university-in-ghana
#3
A Obour, M O Moses, B Baffour-Awuah, B Asamoah, P K Sarpong, F Osei, L G Akwa, E J Appiah
Physical, physiological and motor performance traits play substantial role in both volleyball (VB) and basketball(BB) competitions. The differences in these traits among University athletes in Ghana have not been reported. Hence, thisstudy documents and compares the physical, physiological and motor performance traits of VB and BB university athletes.Purposive sampling technique involving thirty-five university athletes (24 males and 11 females) with mean age of 21.77 ±2.03years was used. Height, weightn, waist and hip circumferences, waist to hip ratio (WHR), body mass index (BMI), heartrate (HR), systolic blood pressure (SBP) and diastolic blood pressure (DBP), shoulder muscular endurance (SME), abdominal muscular endurance (AME), left and right Arm Strength, Leg Power, Reaction time, Agility and Speed traits were measured...
June 30, 2017: Nigerian Journal of Physiological Sciences: Official Publication of the Physiological Society of Nigeria
https://www.readbyqxmd.com/read/29116831/clinician-friendly-physical-performance-tests-for-the-knee
#4
Jerrod J Harrison, Marissa K Yorgey, Alexander J Csiernik, Joseph H Vogler, Kenneth E Games
Reference:  Hegedus EJ, McDonough S, Bleakley C, Cook CE, Baxter GD. Clinician-friendly lower extremity physical performance measures in athletes: a systematic review of measurement properties and correlation with injury. Part 1: the tests for knee function including the hop tests. Br J Sports Med. 2015;49(10):642-648. CLINICAL QUESTION:   Do individual physical performance tests (PPTs) used as measures for lower extremity function have any relationship to injuries in athletes aged 12 years or older? DATA SOURCES:   Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used to locate articles...
November 8, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29112051/a-comparison-of-the-effects-of-short-term-plyometric-and-resistance-training-on-lower-body-muscular-performance
#5
Malcolm T Whitehead, Timothy P Scheett, Michael R McGuigan, N Z Auckland, Angel V Martin
The purpose of this study was to compare effects of short-term plyometric and resistance training on lower body muscular performance. A convenience sample of thirty males aged 21.3 ± 1.8 years, height 177.3 ± 9.4 cm, mass 80.0 ± 2.6 kg, body fat 16.1 ± 1.2 % participated in this investigation. Participants were grouped and participated in progressive plyometric (PLT) or resistance training (SRT) twice per week for eight consecutive weeks or a control (CNT) group that did not participate in any training...
November 1, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29094632/anthropometric-characteristics-and-physical-fitness-in-rural-and-urban-11-to-16-year-old-melanesian-adolescents-a-cross-sectional-study-in-new-caledonian-schools
#6
Paul Zongo, Stephane Frayon, Sophie Antoine-Jonville, Guillaume Wattelez, Pierre-Yves Le Roux, Olivier Hue, Olivier Galy
We evaluated anthropometric characteristics and physical fitness in 556 Melanesian adolescents from rural and urban New Caledonia to build health education programs focused on physical activity. In 2013, body weight, height, skinfold thickness, lean body mass (LBM), percentage fat body mass (%FBM), physical fitness (power, agility, speed, maximal aerobic speed [MAS], estimated VO2max), and self-reported physical activity were assessed. Rural adolescents were significantly shorter and faster, had lower weight, %FBM, LBM, and power output and similar MAS and VO2max, and were more active than urban adolescents...
October 2017: Asia-Pacific Journal of Public Health
https://www.readbyqxmd.com/read/29091479/case-study-the-effect-of-nutritional-intervention-on-body-composition-and-physical-performance-of-a-female-squash-player
#7
Christopher Rosimus
The body composition of a squash player may affect athletic performance as carrying excessive body fat may increase injury risk and impair agility and speed. This case study outlines the effect of a nutritional intervention on body composition, vitamin D status and physical performance of a female squash player. A structured, 6-week moderate energy-restricted diet (70-78% of Estimated Energy Requirement (EER) of 2300 kcal was implemented with weekly support. A daily supplement of vitamin D, omega 3 fatty acids, and a multivitamin/multimineral and whey protein was used...
November 1, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29074288/strategy-quantification-using-body-worn-inertial-sensors-in-a-reactive-agility-task
#8
Chika U Eke, Stephen M Cain, Leia A Stirling
Agility performance is often evaluated using time-based metrics, which provide little information about which factors aid or limit success. The objective of this study was to better understand agility strategy by identifying biomechanical metrics that were sensitive to performance speed, which were calculated with data from an array of body-worn inertial sensors. Five metrics were defined (normalized number of foot contacts, stride length variance, arm swing variance, mean normalized stride frequency, and number of body rotations) that corresponded to agility terms defined by experts working in athletic, clinical, and military environments...
October 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29065054/the-importance-of-body-composition-in-the-national-hockey-league-combine-physiologic-assessments
#9
Nathan A Chiarlitti, Patrick Delisle-Houde, Ryan E R Reid, Cory Kennedy, Ross E Andersen
The National Hockey League (NHL) combine was designed to assess draft-eligible players based on body composition, speed, power, and strength. The importance of body composition in the battery of combine physical tests was investigated and differences in results based on position were explored. Thirty-seven elite male Canadian university hockey players (age = 22.86 ± 1.55 years, weight = 87.21 ± 6.52 kg, height = 181.69 ± 6.19 cm) participated in the study at the beginning of their hockey season. All participants underwent physical testing (as outlined in the 2016 NHL combine) and one total body dual energy x-ray absorptiometry (DXA) scan to measure body composition...
October 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29059812/movement-augmentation-to-evaluate-human-control-of-locomotor-stability
#10
Geoffrey Brown, Mengnan Mary Wu, Felix C Huang, Keith E Gordon
Controlling center of mass (COM) position and velocity within a dynamic base of support is essential for gait stability. This skill is often compromised following neurologic injury, creating a need to develop effective interventions to enhance gait stability. A movement augmentation paradigm applied to walking could potentially be used to improve control of COM dynamics. We have developed a cable robot system, the Agility Trainer, to apply continuous frontal-plane forces to the pelvis during treadmill walking...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29039763/design-of-a-wireless-sensor-system-with-the-algorithms-of-heart-rate-and-agility-index-for-athlete-evaluation
#11
Meina Li, Youn Tae Kim
Athlete evaluation systems can effectively monitor daily training and boost performance to reduce injuries. Conventional heart-rate measurement systems can be easily affected by artifact movement, especially in the case of athletes. Significant noise can be generated owing to high-intensity activities. To improve the comfort for athletes and the accuracy of monitoring, we have proposed to combine robust heart rate and agility index monitoring algorithms into a small, light, and single node. A band-pass-filter-based R-wave detection algorithm was developed...
October 17, 2017: Sensors
https://www.readbyqxmd.com/read/29031643/physical-fitness-and-psychological-health-in-overweight-obese-children-a-cross-sectional-study-from-the-activebrains-project
#12
M Rodriguez-Ayllon, C Cadenas-Sanchez, I Esteban-Cornejo, J H Migueles, J Mora-Gonzalez, P Henriksson, M Martín-Matillas, A Mena-Molina, P Molina-García, F Estévez-López, G M Enriquez, J C Perales, J R Ruiz, A Catena, F B Ortega
OBJECTIVES: To examine the associations of physical fitness (i.e. cardiorespiratory fitness, muscular strength, and speed/agility) with psychological distress and psychological well-being in overweight/obese pre-adolescent children. DESIGN: 110 overweight/obese children (10.0±1.1years old, 61 boys) from the ActiveBrains project (http://profith.ugr.es/activebrains) participated in this cross-sectional study. METHODS: Physical fitness was evaluated by the ALPHA battery test...
October 4, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29023331/effects-of-plyometric-training-on-components-of-physical-fitness-in-prepuberal-male-soccer-athletes-the-role-of-surface-instability
#13
Yassine Negra, Helmi Chaabene, Senda Sammoud, Raja Bouguezzi, Bessem Mkaouer, Younés Hachana, Urs Granacher
Negra, Y, Chaabene, H, Sammoud, S, Bouguezzi, R, Mkaouer, B, Hachana, Y, and Granacher, U. Effects of plyometric training on components of physical fitness in prepuberal male soccer athletes: the role of surface instability. J Strength Cond Res XX(X): 000-000, 2017-Previous studies contrasted the effects of plyometric training (PT) conducted on stable vs. unstable surfaces on components of physical fitness in child and adolescent soccer players. Depending on the training modality (stable vs. unstable), specific performance improvements were found for jump (stable PT) and balance performances (unstable PT)...
October 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28949023/the-next-generation-of-capillary-electrophoresis-instruments-performance-of-ce-sds-protein-analysis
#14
REVIEW
Julia Kahle, Kai Jorrit Maul, Hermann Wätzig
Over the last decade, capillary electrophoresis gained tremendous importance, because it became an indispensible tool for the quality control of biologics, e.g. therapeutic antibodies. Consequently, there has been a continuous development within the CE market. Microchip techniques have been established in the last years. Further trends are complete solutions for specific applications by the usage of reagent kits. Step by step instructions and facilitated handling of the instruments are becoming more common...
September 26, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28933713/adaptations-associated-with-an-after-school-strength-and-conditioning-program-in-middle-school-aged-boys-a-quasi-experimental-design
#15
Brennan J Thompson, Matt S Stock, Jacob A Mota, Alexander S Drusch, Ryan N DeFranco, Tyler R Cook, Matthew A Hamm
High-intensity strength and conditioning programs aimed at improving youth performance are becoming increasingly prevalent. The purpose of this study was to investigate the effects of a 16-week after-school strength and conditioning program on performance and body composition in middle-school-aged boys. Subjects in the training group (n = 16, mean age = 11.8 years) performed 90 minutes of supervised plyometric and resistance training twice weekly for 16 weeks. A group of control subjects (n = 9, age = 12.1 years) maintained their current activity levels...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28919497/body-mass-index-predicts-selected-physical-fitness-attributes-but-is-not-associated-with-performance-on-military-relevant-tasks-in-u-s-army-soldiers
#16
Joseph R Pierce, David W DeGroot, Tyson L Grier, Keith G Hauret, Bradley C Nindl, Whitfield B East, Michael S McGurk, Bruce H Jones
OBJECTIVES: Army body composition standards are based upon validated criteria; however, certain field-expedient methodologies (e.g., weight-for-height, body mass index [BMI]) may disqualify individuals from service who may otherwise excel on physical performance and military-relevant tasks. The purpose was to assess soldier physical performance and military-specific task/fitness performance stratified by BMI. DESIGN: Cross-sectional observational study. METHODS: Male (n=275) and female (n=46) soldiers performed a wide-array of physical fitness tests and military-specific tasks, including the Army physical fitness test (APFT)...
September 6, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28878461/comparison-of-physical-activities-of-female-football-players-in-junior-high-school-and-high-school
#17
Yuri Inoue, Yoshitaka Otani, Seiichi Takemasa
[Purpose] This study aimed to compare physical activities between junior high school and high school female football players in order to explain the factors that predispose to a higher incidence of sports injuries in high school female football players. [Subjects and Methods] Twenty-nine female football players participated. Finger floor distance, the center of pressure during single limb stance with eyes open and closed, the 40-m linear sprint time, hip abduction and extension muscle strength and isokinetic knee flexion and extension peak torque were measured...
August 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28858057/effects-of-six-weeks-sprint-strength-and-agility-training-on-body-composition-cardiovascular-and-physiological-parameters-of-male-field-hockey-players
#18
Hanjabam Barun Sharma, Jyotsna Kailashiya
Optimal physiological and cardiovascular characteristics are essential for optimal physical performance. Different types of training regimes affect these characteristics and lead to trainee's adaptation and changes in relevant parameters. In present interventional study we have evaluated effects of six weeks sprint-strength & agility training on such parameters. Twenty four young Indian national hockey players volunteered for this study. BW(weight), BMI, BF (%body fat), LBM (lean body mass), rHR (resting heart rate), rBP (blood pressure), rDP (double-product), P/power (using Running-based Anaerobic Sprint Test), VJ (vertical jump), SP (seated shot-put test), BS (ball-hitting speed), Tm (505-agility test) & VO2max were measured, and changes (d) after specified training regime were studied...
August 26, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28828094/variability-of-metabolic-power-data-in-elite-soccer-players-during-pre-season-matches
#19
Matthias Wilhelm Hoppe, Christian Baumgart, Mirko Slomka, Ted Polglaze, Jürgen Freiwald
This study aimed to determine the within-subject variability of GPS-derived metabolic power data in elite soccer players across several pre-season matches and compare the variability of high metabolic power, velocity, acceleration and deceleration running. Additionally, differences in metabolic power data among playing positions and relationships with various physical abilities were also investigated. Metabolic power data from 12 outfield starting players competing in the German Bundesliga were collected during five pre-season matches using GPS-technology (10 Hz)...
September 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28814844/comparison-between-parameters-of-muscle-performance-and-inflammatory-biomarkers-of-non-sarcopenic-and-sarcopenic-elderly-women
#20
Lygia Paccini Lustosa, Patrícia Parreira Batista, Daniele Sirineu Pereira, Leani Souza Máximo Pereira, Aline Scianni, Giane Amorim Ribeiro-Samora
BACKGROUND: Sarcopenia is a multifactorial geriatric syndrome with complex interrelationships. Increased plasma levels of inflammatory mediators increase the catabolic stimuli of the musculature, thereby causing a decrease in mass and muscular function. OBJECTIVE: The objective of this study was to compare the performance of the knee extensors test (by isokinetic dynamometer) and plasma levels of interleukin-6 (IL-6) and soluble receptors of tumor necrosis factor alpha (sTNFR1) between sarcopenics and non-sarcopenics community-dwelling elderly women residents of Brazil...
2017: Clinical Interventions in Aging
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