keyword
MENU ▼
Read by QxMD icon Read
search

Peak height velocity

keyword
https://www.readbyqxmd.com/read/28345999/variance-associated-with-walking-velocity-during-force-platform-gait-analysis-of-a-heterogeneous-sample-of-clinically-normal-dogs
#1
Alexander M Piazza, Emily E Binversie, Lauren A Baker, Brett Nemke, Susannah J Sample, Peter Muir
OBJECTIVE To determine whether walking at specific ranges of absolute and relative (V*) velocity would aid efficient capture of gait trial data with low ground reaction force (GRF) variance in a heterogeneous sample of dogs. ANIMALS 17 clinically normal dogs of various breeds, ages, and sexes. PROCEDURES Each dog was walked across a force platform at its preferred velocity, with controlled acceleration within 0.5 m/s(2). Ranges in V* were created for height at the highest point of the shoulders (withers; WHV*)...
April 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28326606/physical-activity-sedentary-time-and-bone-strength-from-childhood-to-early-adulthood-a-mixed-longitudinal-hr-pqct-study
#2
Leigh Gabel, Heather M Macdonald, Lindsay Nettlefold, Heather A McKay
Bone strength is influenced by bone geometry, density, and bone microarchitecture, which adapt to increased mechanical loads during growth. Physical activity (PA) is essential for optimal bone strength accrual; however, less is known about how sedentary time influences bone strength and its determinants. Thus, our aim was to investigate the prospective associations between PA, sedentary time, and bone strength and its determinants during adolescence. We used HR-pQCT at distal tibia (8% site) and radius (7% site) in 173 girls and 136 boys (aged 9 to 20 years at baseline)...
March 22, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28316257/acute-kinematic-and-kinetic-adaptations-to-wearable-resistance-during-vertical-jumping
#3
Paul Macadam, Kim D Simperingham, John B Cronin, Grace Couture, Chloe Evison
One variation of vertical jump (VJ) training is resisted or weighted jump training, where wearable resistance (WR) enables jumping to be overloaded in a movement specific manner. A two-way analysis of variance with Bonferroni post hoc contrasts was used to determine the acute changes in VJ performance with differing load magnitudes and load placements. Kinematic and kinetic data were quantified using a force plate and contact mat. Twenty sport active subjects (age: 27.8 ± 3.8 years; body mass (BM): 70...
March 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28295804/family-history-of-cardiovascular-disease-and-parental-lifestyle-behaviors-are-associated-with-offspring-cardiovascular-disease-risk-markers-in-childhood
#4
Danilo R Silva, André O Werneck, Paul J Collings, Rômulo A Fernandes, Décio S Barbosa, Enio R V Ronque, Luís B Sardinha, Edilson S Cyrino
INTRODUCTION: Cardiovascular disease risk markers have become more prevalent in childhood. To provide increased understanding of the etiology of this public health issue, we investigated associations between family characteristics with cardiovascular disease risk markers in adolescents from a developing nation. METHODS: In this cross-sectional study data for fasting glucose, lipoproteins (LDL-C and HDL-C), triglycerides, and total cholesterol were collected from 991 adolescents aged 10-17 who were recruited from public schools in Londrina city, Southern Brazil...
March 11, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28295565/characterization-of-left-ventricle-energy-loss-in-healthy-adults-using-vector-flow-mapping-preliminary-results
#5
Lei Xu, Chao Sun, Xiaoli Zhu, Weihua Liu, Shengjun Ta, Dan Zhao, Feifei Wang, Liwen Liu
BACKGROUND: Energy loss (EL) is a new quantitative hemodynamic index based on vector flow mapping (VFM). This study aimed to characterize EL of the left ventricle (LV) in healthy adults. METHODS: Fifty-one healthy adults were enrolled in this study. EL of LV was analyzed frame by frame using color Doppler images of a standard apical three-chamber dynamic view on an offline VFM workstation. The average EL of systole and diastole was calculated, and the results were averaged over three cardiac cycles...
March 14, 2017: Echocardiography
https://www.readbyqxmd.com/read/28288162/left-ventricular-long-axis-tissue-doppler-systolic-velocity-is-independently-related-to-heart-rate-and-body-size
#6
Roger E Peverill, Bon Chou, Lesley Donelan
BACKGROUND: The physiological factors which affect left ventricular (LV) long-axis function are not fully defined. We investigated the relationships of resting heart rate and body size with the peak velocities and amplitudes of LV systolic and early diastolic long axis motion, and also with long-axis contraction duration. METHODS: Two groups of adults free of cardiac disease underwent pulsed-wave tissue Doppler imaging at the septal and lateral mitral annular borders...
2017: PloS One
https://www.readbyqxmd.com/read/28287685/care-of-shoulder-pain-in-the-overhead-athlete
#7
Joseph Chorley, Richard E Eccles, Armand Scurfield
Shoulder complaints are common in the overhead athlete. Understanding the biomechanics of throwing and swimming requires understanding the importance of maintaining the glenohumeral relationship of the shoulder. Capsular laxity, humeral retrotorsion, glenoid retroversion, glenohumeral internal rotation deficit, and scapular dyskinesis can all contribute to shoulder dysfunction and pain. Injuries are more likely during peak height velocity, especially when coupled with overuse, previous injuries not adequately treated, or change in the demands on the shoulder such as a new technique, bigger field, or longer race...
March 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28282758/the-effects-of-barbell-load-on-countermovement-vertical-jump-power-and-net-impulse
#8
Peter D Mundy, Neal A Smith, Mike A Lauder, Jason P Lake
The aim of this study was to examine the effects of barbell load on countermovement vertical jump (CMJ) power and net impulse within a theoretically valid framework, cognisant of the underpinning force, temporal, and spatial components. A total of 24 resistance-trained rugby union athletes (average ± SD: age: 23.1 ± 3.4 years; height: 1.83 ± 0.05 m; body mass (BM): 91.3 ± 10.5 kg) performed maximal CMJ under 5 experimental conditions in a randomised, counterbalanced order: unloaded, and with additional loads of 25%, 50%, 75%, and 100% of BM...
September 26, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28273428/mechanical-biochemical-and-dietary-determinants-of-the-functional-model-of-bone-development-of-the-radius-in-children-and-adolescents
#9
Izabella Atena Ludwa, Bareket Falk, Wendy E Ward, Kimberley L Gammage, Panagiota Klentrou
This study examined the degree to which various mechanical, biochemical and dietary factors are related to non-weight bearing bone properties in 172 healthy peri-pubertal children (11.7±2.0 years). Dominant radial speed of sound (rSOS) was measured by transaxial quantitative ultrasound at distal radius. Potential modulating factors included somatic maturity offset (years from age of peak height velocity), grip strength, forearm lean cross-sectional area (CSA), physical activity, nutritional intake and amino-terminal cross-linking propeptide (NTx), reflecting bone resorption...
March 8, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28218400/growth-references-for-tsimane-forager-horticulturalists-of-the-bolivian-amazon
#10
Aaron D Blackwell, Samuel S Urlacher, Bret Beheim, Christopher von Rueden, Adrian Jaeggi, Jonathan Stieglitz, Benjamin C Trumble, Michael Gurven, Hillard Kaplan
OBJECTIVES: Growth standards and references currently used to assess population and individual health are derived primarily from urban populations, including few individuals from indigenous or subsistence groups. Given environmental and genetic differences, growth may vary in these populations. Thus, there is a need to assess whether international standards are appropriate for all populations, and to produce population specific references if growth differs. Here we present and assess growth references for the Tsimane, an indigenous population of Bolivian forager-horticulturalists...
March 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28195979/effects-of-high-intensity-interval-training-with-different-interval-durations-on-physical-performance-in-handball-players
#11
Jorge Viaño-Santasmarinas, Ezequiel Rey, Sergio Carballeira, Alexis Padrón-Cabo
The purpose of this study was to compare the effects of 2 high-intensity interval training protocols (HIIT) with different interval durations (short (SI) vs long (LI)), based on peak running velocity in 30-15 Intermittent Fitness Test (VIFT) in handball players. Eighteen highly trained players (age: 22.7±3.9 years; height: 181.5±6.6 cm; body mass: 84.7±14.1 kg) were randomly assigned to SI (2 sets of 22 intervals of 10-s runs at 95%VIFT) or LI (5 sets of 3 min intervals at 85% VIFT) group. The intervention program had to be carried out 2 times a week over 6 weeks...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28192757/evaluation-of-superficially-porous-and-fully-porous-columns-for-analysis-of-drugs-in-plasma-samples-by-uhplc-ms-ms
#12
Vinicius Ricardo Acquaro, Fernando Mauro Lanças, Maria Eugênia Costa Queiroz
This work compares the performance of recently introduced C18 superficially porous columns (four columns) and C18 fully porous columns (two columns), with different particle sizes, during the analysis of drugs in plasma samples by MS/MS detection. The following chromatographic parameters were evaluated for all the columns: reduced plate height (h) vs reduced linear velocity (v), impedance vs v, chromatographic run time vs flow rate (mLmin(-1)), backpressure vs flow rate (mLmin(-1)), resolution, peak capacity, asymmetry, and retention factor...
March 24, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28183042/the-effect-of-asymmetrical-body-orientation-during-simulated-forward-falls-on-the-distal-upper-extremity-impact-response-of-healthy-people
#13
Timothy A Burkhart, Evan Brydges, Jennifer Stefanczyk, David M Andrews
The occurrence of distal upper extremity injuries resulting from forward falls (approximately 165,000 per year) has remained relatively constant for over 20years. Previous work has provided valuable insight into fall arrest strategies, but only symmetric falls in body postures that do not represent actual fall scenarios closely have been evaluated. This study quantified the effect of asymmetric loading and body postures on distal upper extremity response to simulated forward falls. Twenty participants were suspended from the Propelled Upper Limb fall ARest Impact System (PULARIS) in different torso and leg postures relative to the ground and to the sagittal plane (0°, 30° and 45°)...
January 27, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28182510/the-effect-of-plyometric-training-volume-in-prepubertal-male-soccer-players-athletic-performance
#14
Helmi Chaabene, Yassine Negra
PURPOSE: The aim of this study was to assess and to compare the effects of 8-weeks in-season (2 sessions per-week) low and high-volume plyometric training (PT) on measures of physical fitness in prepubertal male soccer players. METHODS: A total of twenty-five soccer players were randomly assigned to low-volume plyometric training group (LPT; n=13; age = 12.68 ± 0.23 years; age at peak height velocity (APHV) = 14.25 ± 0.29 years, maturity-offset = -1.57 ± 0.29 years) and high-volume plyometric training group (HPT; n=12; age = 12...
February 9, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28149376/a-new-physical-performance-classification-system-for-elite-handball-players-cluster-analysis
#15
Iker J Bautista, Ignacio J Chirosa, Joseph E Robinson, Roland van der Tillaar, Luis J Chirosa, Isidoro Martínez Martín
The aim of the present study was to identify different cluster groups of handball players according to their physical performance level assessed in a series of physical assessments, which could then be used to design a training program based on individual strengths and weaknesses, and to determine which of these variables best identified elite performance in a group of under-19 [U19] national level handball players. Players of the U19 National Handball team (n=16) performed a set of tests to determine: 10 m (ST10) and 20 m (ST20) sprint time, ball release velocity (BRv), countermovement jump (CMJ) height and squat jump (SJ) height...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28145740/adaptive-alterations-in-shoulder-range-of-motion-and-strength-in-young-tennis-players
#16
Benoit Gillet, Mickaël Begon, Violaine Sevrez, Christian Berger-Vachon, Isabelle Rogowski
CONTEXT: Playing tennis requires unilateral and intensive movement of the upper limb, which may lead to functional adaptations of the shoulder and an increased injury risk. Identifying which athletes will be future elite tennis players starts at 5 to 6 years of age. Therefore, highly skilled players practice intensively in their childhood. However, whether these functional changes occur during the prepubertal years has not been established. OBJECTIVES: To assess changes in glenohumeral-joint-rotation range of motion and strength of the shoulder-complex muscles in prepubertal elite tennis players...
February 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28134572/physical-activity-related-injury-profile-in-children-and-adolescents-according-to-their-age-maturation-and-level-of-sports-participation
#17
Lara Costa E Silva, Maria Isabel Fragoso, Júlia Teles
BACKGROUND: Physical activity (PA) is beneficial, enhancing healthy development. However, one-third of school-age children practicing sports regularly suffer from an injury. These injuries are associated with sex, chronological age, and PA level. PURPOSE: To identify the importance of age, PA level, and maturity as predictors of injury in Portuguese youth. STUDY DESIGN: Descriptive epidemiological study. LEVEL OF EVIDENCE: Level 3...
March 2017: Sports Health
https://www.readbyqxmd.com/read/28131487/effects-of-obesity-on-dynamic-stability-control-during-recovery-from-a-treadmill-induced-slip-among-young-adults
#18
Feng Yang, JaeEun Kim, Fei Yang
This study sought to investigate the effects of obesity on falls and dynamic stability control in young adults when subject to a standardized treadmill-induced gait-slip. Forty-four young adults (21 normal-weight and 23 obese) participated in this study. After their muscle strength was assessed at the right knee under maximum voluntary isometric (flexion and extension) contractions, participants were moved to an ActiveStep treadmill. Following 5 normal walking trials on the treadmill, all participants encountered an identical and unexpected slip defined as a perturbation in the anterior direction with the magnitude of 24-cm slip distance and 2...
February 28, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28129282/age-related-variation-in-male-youth-athletes-countermovement-jump-after-plyometric-training-a-meta-analysis-of-controlled-trials
#19
Jason J Moran, Gavin R H Sandercock, Rodrigo Ramírez-Campillo, César M P Meylan, Jay A Collison, Dave A Parry
Moran, J, Sandercock, GRH, Ramírez-Campillo, R, Meylan, CMP, Collison, J, and Parry, DA. Age-related variation in male youth athletes' countermovement jump after plyometric training: A meta-analysis of controlled trials. J Strength Cond Res 31(2): 552-565, 2017-Recent debate on the trainability of youths has focused on the existence of periods of accelerated adaptation to training. Accordingly, the purpose of this meta-analysis was to identify the age- and maturation-related pattern of adaptive responses to plyometric training in youth athletes...
February 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28120617/collar-height-and-heel-counter-stiffness-for-ankle-stability-and-athletic-performance-in-basketball
#20
Hui Liu, Zitian Wu, Wing-Kai Lam
This study examined the effects of collar height and heel counter-stiffness of basketball shoes on ankle stability during sidestep cutting and athletic performance. 15 university basketball players wore customized shoes with different collar heights (high and low) and heel counter-stiffness (regular, stiffer and stiffest) for this study. Ankle stability was evaluated in sidestep cutting while athletic performance evaluated in jumping and agility tasks. All variables were analysed using two-way repeated ANOVA...
January 25, 2017: Research in Sports Medicine
keyword
keyword
7116
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"