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https://www.readbyqxmd.com/read/28212348/an-electromagnetic-sensor-for-the-autonomous-running-of-visually-impaired-and-blind-athletes-part-ii-the-wearable-device
#1
Marco Pieralisi, Valentina Di Mattia, Valerio Petrini, Alfredo De Leo, Giovanni Manfredi, Paola Russo, Lorenzo Scalise, Graziano Cerri
Currently, the availability of technology developed to increase the autonomy of visually impaired athletes during sports is limited. The research proposed in this paper (Part I and Part II) focuses on the realization of an electromagnetic system that can guide a blind runner along a race track without the need for a sighted guide. In general, the system is composed of a transmitting unit (widely described in Part I) and a receiving unit, whose components and main features are described in this paper. Special attention is paid to the definition of an electromagnetic model able to faithfully represent the physical mechanisms of interaction between the two units, as well as between the receiving magnetic sensor and the body of the user wearing the device...
February 16, 2017: Sensors
https://www.readbyqxmd.com/read/28195976/self-reported-measures-of-strength-and-sport-specific-skills-distinguish-ranking-in-an-international-online-fitness-competition
#2
Paul R Serafini, Yuri Feito, Gerald T Mangine
To determine if self-reported performance measures could distinguish ranking during the 2016 CrossFit Open, data from three thousand male (n=1500; 27.2±8.4 y; 85.2±7.9 kg; 177.0±6.5 cm) and female (n=1500, 28.7±4.9 y; 63.7±5.8 kg; 163.7±6.6 cm) competitors was used for this study. Competitors were split by gender and grouped into quintiles (Q1-Q5) based upon their final ranking. Quintiles were compared for one-repetition maximum (1RM) squat, deadlift, clean and jerk (CJ), snatch, 400-m sprint, 5,000-m run, and benchmark workouts (Fran, Helen, Grace, Filthy-50, and Fight-gone-bad)...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28178972/association-of-socioeconomic-school-related-and-family-factors-and-physical-activity-and-sedentary-behaviour-among-adolescents-multilevel-analysis-of-the-pralimap-trial-inclusion-data
#3
Johanne Langlois, Abdou Y Omorou, Anne Vuillemin, Serge Briançon, Edith Lecomte
BACKGROUND: Social differences among adolescents in physical activity and sedentary behaviour have been identified but are not well explained. The current study aimed to identify socioeconomic, family and school-related associated factors with physical activity and sedentary behaviour among high-school adolescents. METHODS: This was a cross-sectional analysis of T0 physical activity and sedentary behaviour of 2523 students 14 - 18 years old recruited for the PRALIMAP trial from 24 French state-run high schools...
February 8, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28168114/are-sawfishes-still-present-in-mozambique-a-baseline-ecological-study
#4
Ruth H Leeney
Sawfishes (Pristidae) were formerly abundant in the western Indian Ocean, but current data on sawfish presence and distribution are lacking for most of the region. This paper summarises historical records of sawfishes in Mozambican waters and presents the findings of the first assessment of the presence and status of sawfishes in Mozambique. A countrywide baseline assessment was undertaken between May and July 2014, using interviews with artisanal, semi-industrial and industrial fishers, fish traders and fisheries monitoring staff as the primary source of information on sawfish distribution, recent catches, socio-economic value and cultural importance...
2017: PeerJ
https://www.readbyqxmd.com/read/28163572/knee-problems-and-its-associated-factors-among-active-cyclists-in-eastern-province-saudi-arabia
#5
Abdullatif K Althunyan, Magdy A Darwish, Moataza M Abdel Wahab
INTRODUCTION: Bicycling is one of the most enjoyable aerobic exercises recommended for the promotion of an individual's health. The Eastern Province of Saudi Arabia has seen a huge increase in the number of people who cycle. People have different goals for bicycling, but the injuries they sustain are common. Most of them relate to overuse, particularly of lower body joints. This study was conducted to determine the prevalence of knee problems and factors associated with knee pain in cyclists...
January 2017: Journal of Family & Community Medicine
https://www.readbyqxmd.com/read/28158252/physiological-responses-and-external-validity-of-a-new-setting-for-taekwondo-combat-simulation
#6
Matheus Hausen, Pedro Paulo Soares, Marcus Paulo Araújo, Flávia Porto, Emerson Franchini, Craig Alan Bridge, Jonas Gurgel
Combat simulations have served as an alternative framework to study the cardiorespiratory demands of the activity in combat sports, but this setting imposes rule-restrictions that may compromise the competitiveness of the bouts. The aim of this study was to assess the cardiorespiratory responses to a full-contact taekwondo combat simulation using a safe and externally valid competitive setting. Twelve male national level taekwondo athletes visited the laboratory on two separate occasions. On the first visit, anthropometric and running cardiopulmonary exercise assessments were performed...
2017: PloS One
https://www.readbyqxmd.com/read/28149523/differences-in-life-expectancy-between-olympic-high-jumpers-discus-throwers-marathon-and-100-meter-runners
#7
Jeffrey Lee-Heidenreich, David Lee-Heidenreich, Jonathan Myers
BACKGROUND: Several studies have demonstrated that body habitus is associated with survival (life expectancy) time. We sought to determine if survival differed between elite athletes with a range of body types. We hypothesized that the survival would differ between athlete types and that ectomorph athletes would have longer survival than heavier athletes. METHODS: For each Olympics between 1928 and 1948 we identified the top (up to 20) Olympic male and female finishers in the high jump (HJ), discus throw, marathon, and 100-m run...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28149368/the-influence-of-the-gait-related-arm-swing-on-elevation-gain-measured-by-sport-watches
#8
Rahel Ammann, Wolfgang Taube, Matthias Neuhaus, Thomas Wyss
The elevation gain is an important contributor to the total workload in endurance sports. The purpose of this study was to evaluate the influence of the arm swing on elevation gain in three sport watches (Garmin® Forerunner 910XT, Polar® RS800CX and Suunto® Ambit2) on a flat 400 m outdoor track. Altogether, a total of 120 repetitions of 1,200 m were performed at self-selected speeds corresponding to strolling, walking, jogging and running. During the assessment two devices of each sport watch, one secured on the hip and one on the wrist, were worn by the participants...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28142367/peripheral-nerve-sheath-tumor
#9
Rachel Condon, Christopher Allen
A 26-year-old female military officer directly accessed physical therapy, relating a 4-month history of deep, intermittent left medial knee pain with running. Following physical therapy treatment, she was referred to her primary care manager. Magnetic resonance imaging of the knee was ordered, revealing a peripheral nerve sheath tumor with benign features within the distal gracilis attached to the saphenous nerve. J Orthop Sports Phys Ther 2017;47(2):124. doi:10.2519/jospt.2017.5757.
February 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28142363/higher-fat-mass-is-associated-with-a-history-of-knee-injury-in-youth-sport
#10
Clodagh M Toomey, Jackie L Whittaker, Alberto Nettel-Aguirre, Raylene A Reimer, Linda J Woodhouse, Brianna Ghali, Patricia K Doyle-Baker, Carolyn A Emery
Study Design Historical cohort study. Background History of a knee joint injury and increased fat mass are risk factors for joint disease. Objective The objective of this study was to examine differences in adiposity, physical activity, and cardiorespiratory fitness between youths with a 3- to 10-year history of sport-related intra-articular knee injury and uninjured controls. Methods One hundred young adults (aged 15-26 years; 55% female) with a sport-related intra-articular knee injury sustained 3 to 10 years previously and 100 controls matched for age, sex, and sport, who had no history of intra-articular knee injury, were recruited...
February 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28139042/incidence-and-risk-factors-of-injuries-and-their-impact-on-academic-success-a-prospective-study-in-pete-students
#11
S Bliekendaal, L Goossens, J H Stubbe
Injuries can have a major impact on the physical performance and academic career of physical education teacher education (PETE) students. To investigate the injury problem, risk factors, and the impact of injuries on academic success, 252 PETE students were followed during their first semester. Risk factor analysis was conducted by means of logistic regression analysis with a differentiation for upper body, lower body, acute, overuse, and severe injuries. An incidence of 1.26 injuries/student/semester was found...
January 30, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28098836/association-of-school-environment-and-after-school-physical-activity-with-health-related-physical-fitness-among-junior-high-school-students-in-taiwan
#12
Kai-Yang Lo, Min-Chen Wu, Shu-Chin Tung, City C Hsieh, Hsueh-Hua Yao, Chien-Chang Ho
The relationship between students' school environment and exercise habits is complex, and is affected by numerous factors. However, the few studies that have been conducted on this relationship have reported inconsistent results, especially regarding Taiwanese students. We conducted this cross-sectional study to investigate the association of school environment and after-school physical activity with health-related physical fitness in Taiwanese adolescents. Data were drawn from a national survey conducted by the Ministry of Education in Taiwan in 2008 of health-related physical fitness measurements among junior high school students (649,442 total) in grades seven to nine...
January 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28094488/effects-of-leg-contrast-strength-training-on-sprint-agility-and-repeated-change-of-direction-performance-in-male-soccer-players
#13
Mehréz Hammami, Yassine Negra, Roy J Shephard, Mohamed Souhaiel Chelly
BACKGROUND: Contrast training is popular technique among individuals who are involved in dynamic sports, having as its goal an increase in dynamic muscular performance. It is characterized by the use of high and low loads in the same strength training session. The present investigation aimed to determine the effects of adding 8--weeks of contrast strength training (CSTP) to regular soccer practice in U--17 male soccer players during the competitive season. We hypothesized that CSTP would enhance their performance...
January 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28091446/correlation-between-athlete-training-intensity-and-cardiac-performance
#14
T Xiao, Y Zhang
OBJECTIVE: An effective analysis of correlation between training intensity of athletes and cardiac performance is done to develop scientific and reasonable exercise program and to promote health of athletes. METHODS: During December 2013-December 2015, 3600 students from different sports schools were selected for the test. All the athletes were randomly grouped, that is half-hour running group, one-hour running group and 90 -minute running group, which are named A, B, C groups respectively...
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28075521/association-between-adolescent-sport-activities-and-lumbar-disc-degeneration-among-young-adults
#15
Jani Takatalo, Jaro Karppinen, Simo Näyhä, Simo Taimela, Jaakko Niinimäki, Roberto Blanco Sequeiros, Tuija Tammelin, Juha Auvinen, Osmo Tervonen
The relationship between different sport activities and lumbar intervertebral disc degeneration (DD) is largely unknown. We evaluated whether adolescent participation in different sports is associated with lumbar DD in a population-based birth cohort of young adults. A total of 558 young adults (325 females and 233 males) underwent magnetic resonance imaging (MRI, 1.5-T scanner). A DD sum score, based on the Pfirrmann grading, was calculated for all lumbar levels. The sum score was categorized into no DD, 1, 2, or at least 3...
January 11, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28051343/methodological-considerations-when-quantifying-high-intensity-efforts-in-team-sport-using-global-positioning-system-technology
#16
Matthew C Varley, Arne Jaspers, Werner F Helsen, James J Malone
Purpose Sprints and accelerations are popular performance indicators in applied sport. The methods used to define these efforts using athlete tracking technology could affect the number of efforts reported. The study aimed to determine the influence of different techniques and settings for detecting high-intensity efforts using Global Positioning System (GPS) data. Methods Velocity and acceleration data of a professional soccer match was recorded via 10-Hz GPS. Velocity data was filtered using either a median or exponential filter...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28050921/influence-of-dietary-acid-load-on-exercise-performance
#17
Catherine Applegate, Mackenzie Mueller, Krystle E Zuniga
Diet composition can affect systemic pH and acid-base regulation, which may in turn influence exercise performance. An acidic environment in the muscle impairs performance and contributes to fatigue; therefore, current trends in sports nutrition place importance on maximizing the alkalinity of the body with ergogenic aids and dietary strategies. This review examines the evidence on the effects of dietary manipulations on acid load and exercise performance. Ten studies that investigated the effect of high versus low dietary acid loads on athletic performance generally identified that low dietary acid loads increased plasma pH, but did not consistently improve exercise performance at maximal or submaximal exercise intensities...
January 4, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28050535/anterior-cruciate-ligament-and-meniscal-injuries-in-sports-incidence-time-of-practice-until-injury-and-limitations-caused-after-trauma
#18
Diego Costa Astur, Marcos Xerez, João Rozas, Pedro Vargas Debieux, Carlos Eduardo Franciozi, Moises Cohen
OBJECTIVE: To analyze the incidence of ACL and meniscal injuries in a population of recreational and elite athletes from Brazil and the relation of these injuries with their sports activities. METHODS: This was a prospective observational study of 240 patients with ACL and/or meniscal injuries submitted to surgical treatment. Data of patients and sport modality, as well as Tegner score were registered in the first clinical evaluation. The patients were divided into three groups: (1) isolated rupture of the ACL; (2) ACL injury associated with meniscal injury; (3) isolated menisci injury...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28039074/caffeine-stimulates-voluntary-wheel-running-in-mice-without-increasing-aerobic-capacity
#19
Gerald C Claghorn, Zoe Thompson, Kristianna Wi, Lindsay Van, Theodore Garland
The "energy drink" Red Bull and the "sports drink" Gatorade are often marketed to athletes, with claims that they cause performance gains. However, both are high in sugars, and also consumed by non-athletes. Few studies have addressed the effects of these drinks or their biologically active components in rodent exercise models. We used three experiments to test effects on both voluntary exercise behavior and maximal aerobic capacity in lines of mice known to differ in "athletic" traits. Mice from four replicate High Runner (HR) lines have been selectively bred for voluntary running on wheels, and run approximately three times as many revolutions per day as do mice from four non-selected Control (C) lines...
December 28, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/28035865/effect-of-contact-and-no-contact-small-sided-games-on-elite-handball-players
#20
Antonio Dello Iacono, Domenico Martone, Alessandro Moura Zagatto, Yoav Meckel, Mahmood Sindiani, Mirjana Milic, Johnny Padulo
This study aimed to investigate the effect of contact (C-SSG) and no-contact (NC-SSG) handball small-sided games (SSGs) on motion patterns and physiological responses of elite handball players. Twelve male handball players performed 10 C-SSG and 10 NC-SSG while being monitored through the heart rate (HR) and rate of perceived exertion (RPE) as physiological responses and time-motion activities profile using video-match analysis. Both game conditions resulted in similar HR responses (P > 0.05), but the NC-SSG led to a higher RPE scores...
December 30, 2016: Journal of Sports Sciences
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