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https://www.readbyqxmd.com/read/28641241/influence-of-shoulder-kinematic-estimate-on-joint-and-muscle-mechanics-predicted-by-musculoskeletal-model
#1
Yoann Blache, Mickael Begon
Little information is available in the existing literature regarding the influence of the scapular kinematic estimate method on musculoskeletal analysis. This study aimed to assess the propagation of errors due to the method used for scapular kinematics reconstruction in the workflow of musculoskeletal modeling (joint kinematics, joint torques, muscle force and joint reaction force) in shoulder and upper-limb movements. Two participants performed functional (arm elevation and rotation), daily life (eating and reaching pants pockets) and sports movements (a simulated throwing maneuver)...
June 15, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28641201/pelvic-and-hip-kinematics-during-single-leg-drop-landing-are-altered-in-sports-participants-with-long-standing-groin-pain-a-cross-sectional-study
#2
L Janse van Rensburg, M Dare, Q Louw, L Crous, J Cockroft, L Williams, B Olivier
OBJECTIVES: The aim of this study was to determine the differences in three-dimensional pelvic and hip kinematics during a single-leg drop-landing task in active sports participants with long-standing groin pain compared to healthy matched controls. DESIGN: This was a descriptive study incorporating a cross-sectional design. SETTING: The study was conducted at the Unit for Human Movement Analysis, Stellenbosch University, South Africa. PARTICIPANTS: The study sample was comprised of 20 male club level soccer, rugby, running and cycling participants between the ages of 18 and 55 years...
May 12, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28641105/it-s-not-all-fun-and-games-sports-concussions-and-neuroscience
#3
Christopher C Giza, Mayumi L Prins, David A Hovda
Few items grab the public's attention like sports, from extremes of great victory to injury and defeat. No injury currently arouses stronger interest than concussion. Giza et al., discuss how neuroscience can provide balance between physical activity and TBI, and guide thoughtful discourse and policy.
June 21, 2017: Neuron
https://www.readbyqxmd.com/read/28641022/a-randomized-single-dose-parallel-study-on-enhancement-of-nitric-oxide-in-serum-and-saliva-with-the-use-of-natural-sports-supplement-in-healthy-adults
#4
Joby Jacob, Sreeraj Gopi, Chandradhara Divya
Sports supplements that stimulate the production of nitric oxide (NO) are widely promoted agents in the sports nutrition domain, and nitric oxide plays an important role to enhance the cardiovascular and physical fitness of the sports participants. The purpose of the study is to investigate whether oral intake of a sports nutritional supplement (Fitnox) is able to increase nitrate (NO3(-)) and nitrite (NO2(-)) levels in blood serum and saliva of healthy adults. Fitnox is a unique blend of Kaempferia parviflora methoxy flavones, pomegranate peel polyphenols, and Moringa oleifera leaf saponins...
June 22, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28640882/quantitation-of-underivatized-branched-chain-amino-acids-in-sport-nutritional-supplements-by-capillary-electrophoresis-with-direct-or-indirect-uv-absorbance-detection
#5
Jun Qiu, Jinhao Wang, Zhongqi Xu, Huiqing Liu, Jie Ren
The branched-chain amino acids (BCAAs) including leucine (Leu), isoleucine (Ile) and valine (Val) play a pivotal role in the human body. Herein, we developed capillary electrophoresis (CE) coupled with conventional UV detector to quantify underivatized BCAAs in two kinds of sport nutritional supplements. For direct UV detection at 195 nm, the BCAAs (Leu, two enantiomers of Ile and Val) were separated in a background electrolyte (BGE) consisting of 40.0 mmol/L sodium tetraborate, and 40.0 mmol/L β-cyclodextrin (β-CD) at pH 10...
2017: PloS One
https://www.readbyqxmd.com/read/28640774/the-difference-between-countermovement-and-squat-jump-performances-a-review-of-underlying-mechanisms-with-practical-applications
#6
Bas Van Hooren, Julia Zolotarjova
Van Hooren, B and Zolotarjova, J. The difference between countermovement and squat jump performances: a review of underlying mechanisms with practical applications. J Strength Cond Res 31(7): 2011-2020, 2017-Two movements that are widely used to monitor athletic performance are the countermovement jump (CMJ) and squat jump (SJ). Countermovement jump performance is almost always better than SJ performance, and the difference in performance is thought to reflect an effective utilization of the stretch-shortening cycle...
July 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28640773/salivary-mitochondrial-dna-copy-number-is-associated-with-exercise-ventilatory-efficiency
#7
Yang Chen, Helene Z Hill, Gudrun Lange, Michael J Falvo
Chen, Y, Hill, HZ, Lange, G, and Falvo, MJ. Salivary mitochondrial DNA copy number is associated with exercise ventilatory efficiency. J Strength Cond Res 31(7): 2000-2004, 2017-Mitochondrial DNA copy number (mtDNAcn) is an index of mitochondrial content and is responsive to changes in exercise training volume. Therefore, assessment of mtDNAcn may help to optimize exercise prescription and aid in athlete monitoring. Although previous work has assessed mtDNAcn derived from skeletal muscle and blood using invasive approaches, no study has examined salivary mtDNAcn and its relationship with sport performance...
July 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28640758/consecutive-ultra-short-term-heart-rate-variability-to-track-dynamic-changes-in-autonomic-nervous-system-during-and-after-exercise
#8
Xiang Chen, Ruijie Yao, Gezhen Yin, Jin Li
OBJECTIVE: Quantitative measurement of the dynamic changes in autonomic nervous system (ANS) during and after exercise has great significance in clinical, sports training and other fields. A consecutive ultra-short-term (30 s, UST) heart rate variability (HRV) method was proposed to track the exercise-induced autonomic control of heart rate (HR). APPROACH: Twenty-three healthy young men participated in the study. The first four stages of the Modified Bruce Protocol (S0-S3) were performed...
June 22, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28640675/health-related-quality-of-life-among-us-workers-variability-across-occupation-groups
#9
Taylor M Shockey, Matthew Zack, Aaron Sussell
OBJECTIVES: To examine the health-related quality of life among workers in 22 standard occupation groups using data from the 2013-2014 US Behavioral Risk Factor Surveillance System. METHODS: We examined the health-related quality of life measures of self-rated health, frequent physical distress, frequent mental distress, frequent activity limitation, and frequent overall unhealthy days by occupation group for 155 839 currently employed adults among 17 states. We performed multiple logistic regression analyses that accounted for the Behavioral Risk Factor Surveillance System's complex survey design to obtain prevalence estimates adjusted for potential confounders...
June 22, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28637118/asymptomatic-chiari-type-i-malformation-should-patients-be-advised-against-participation-in-contact-sports
#10
Robert Spencer, Paul Leach
BACKGROUND: Chiari type I malformation (CM-I) is characterised by caudal displacement of the cerebellar tonsils through the foramen magnum, crowding the craniocervical junction. It is being increasingly diagnosed in asymptomatic patients due to the widespread availability of MRI, and there are case reports of these patients suffering sudden death or neurological injury following head or neck trauma, raising the issue of whether they should be prohibited from contact sport participation, given the likelihood of frequent trauma...
March 2, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28636566/detection-of-muscle-gap-by-l-bia-in-muscle-injuries-clinical-prognosis
#11
L Nescolarde, J Yanguas, J Terricabras, H Lukaski, X Alomar, J Rosell-Ferrer, G Rodas
Sport-related muscle injury classifications are based basically on imaging criteria such as ultrasound (US) and magnetic resonance imaging (MRI) without consensus because of a lack of clinical prognostics for return-to-play (RTP), which is conditioned upon the severity of the injury, and this in turn with the muscle gap (muscular fibers retraction). Recently, Futbol Club Barcelona's medical department proposed a new muscle injury classification in which muscle gap plays an important role, with the drawback that it is not always possible to identify by MRI...
June 21, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28636490/creating-inclusive-physical-activity-spaces-the-case-of-body-positive-yoga
#12
Andrew C Pickett, George B Cunningham
PURPOSE: Within the modern cultural climate, those in larger bodies face high levels of weight stigma, particularly in sport and physical activity spaces, which serves as a strong barrier to their participation. However, given the strong link between physical activity and general health and well-being for participants, it is important to explore strategies that encourage participation of these individuals. Thus, the current research examined strategies that physical activity instructors use to develop inclusive exercise spaces for all body sizes...
June 21, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28636468/do-ligamentum-teres-tears-portend-inferior-outcomes-in-patients-with-borderline-dysplasia-undergoing-hip-arthroscopic-surgery-a-match-controlled-study-with-a-minimum-2-year-follow-up
#13
Edwin O Chaharbakhshi, Itay Perets, Lyall Ashberg, Brian Mu, Christopher Lenkeit, Benjamin G Domb
BACKGROUND: Arthroscopic surgery in borderline dysplastic hips remains controversial, but the role of the ligamentum teres (LT) has not been studied in this setting. HYPOTHESIS: Borderline dysplastic patients with LT tears have worse short-term outcomes than those without LT tears. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were prospectively collected on patients who underwent arthroscopic surgery between February 2008 and April 2014...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28636440/effects-of-time-to-start-training-after-acute-patellar-tendon-enthesis-injuries-on-healing-of-the-injury-in-a-rabbit-model
#14
Lin Wang, Kaiyu Xiong, Bo Wang, Xiaotian Liang, Haiwei Li, Haitao Liu, Hui He
BACKGROUND: A patellar tendon injury is a common injury in sports. The optimal time to start training after an acute, proximal patellar enthesis injury is still unclear. HYPOTHESIS: The time to start training after an acute, proximal patellar enthesis injury significantly affects healing of the patellar tendon 4 weeks after the injury. STUDY DESIGN: Controlled laboratory study. METHODS: The left hindlimbs of 35 mature female rabbits were randomly assigned to 5 injury groups including a 4-week natural healing group (NH4W) and 4 training groups that started low-intensity training at 24 hours (POST24), 48 hours (POST48), 72 hours (POST72), and 96 hours (POST96) after an acute patellar tendon injury, with 7 limbs in each group...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28636299/-sprain-of-the-thumb-metacarpal-phalangeal-with-lesion-of-the-ulnar-collateral-ligament
#15
Thibault Poujade, Grégoire Chick
The sprain of the thumb metacarpal-phalangeal joint must be treated in an adapted way in order to avoid chronic laxity. The comparative and bilateral clinical exam is the main element that will allow to detect laxity. In the case of non laxity, a conservative treatment with a splint makes sense. In the case of laxity with Stener effect, a surgical procedure is recommended in order to reintegrate the collateral ligament. In the case of laxity without Stener effect, the choice of treatment is contentious. A US or MRI would be useful if the Stener effect could be underlying...
May 17, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28635402/analysing-the-vocal-behaviour-of-teachers-during-classroom-teaching-using-a-portable-voice-accumulator
#16
Manfred Nusseck, Bernhard Richter, Claudia Spahn, Matthias Echternach
PURPOSE: Teachers are at a considerable risk of developing vocal health problems due to intensive voice use during teaching. This study investigated factors related to the teacher's voice during a teaching situation. METHODS: Overall, 113 teachers were recorded during a typical class lesson, lasting on average 48 min. A portable voice dosimeter (VoxLog System) was used to measure the sound pressure level (SPL) of the noise in the classroom, the teacher's voice SPL, the fundamental frequency (fo) and the phonation time...
March 3, 2017: Logopedics, Phoniatrics, Vocology
https://www.readbyqxmd.com/read/28634682/searching-for-the-sweet-spot-the-foot-rotation-and-parallel-engagement-of-ankle-ligaments-in-maximizing-injury-tolerance
#17
Bingbing Nie, Jason L Forman, Alexander R Mait, John-Paul Donlon, Matthew B Panzer, Richard W Kent
Ligament sprains, defined as tearing of bands of fibrous tissues within ligaments, account for a majority of injuries to the foot and ankle complex in field-based sports. External rotation of the foot is considered the primary injury mechanism of syndesmotic ankle sprains with concomitant flexion and inversion/eversion associated with particular patterns of ligament trauma. However, the influence of the magnitude and direction of loading vectors to the ankle on the in situ stress state of the ligaments has not been quantified in the literature...
June 20, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28633796/cotton-osteotomy-in-flatfoot-reconstruction-a-case-report-highlighting-surgical-technique-and-modified-incision-to-protect-the%C3%A2-medial-dorsal-cutaneous-nerve
#18
Troy J Boffeli, Katherine R Schnell
The Cotton osteotomy or opening wedge medial cuneiform osteotomy is a useful adjunctive flatfoot reconstructive procedure that is rarely performed in isolation. The Cotton procedure is relatively quick to perform and effectively corrects forefoot varus deformity after rearfoot fusion or osteotomy to achieve a rectus forefoot to rearfoot relationship. Proper patient selection is critical, because preoperative findings of medial column joint instability, concomitant hallux valgus deformity, or degenerative joint disease of the medial column might be better treated with arthrodesis of the naviculocuneiform or first tarsometatarsal joints...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28633778/results-of-hemicap-%C3%A2-implantation-as-a-salvage-procedure-for-osteochondral-lesions-of-the-talus
#19
Sarah Ettinger, Christina Stukenborg-Colsman, Hazibullah Waizy, Christoph Becher, Daiwei Yao, Leif Claassen, Yvonne Noll, Christian Plaass
Osteochondral defects (OCDs) of the talus remain a surgical challenge, especially after failed primary treatment. The aim of the present study was to examine the clinical outcomes after HemiCAP(®) implantation for OCDs of the medial talar dome after failed previous surgery. Our retrospective study included 11 patients, who had undergone surgery from June 2009 to September 2012 for an OCD of the medial talar dome and received a HemiCAP(®) on the talus after failed previous surgery for OCD. The data were acquired using patients' medical records and standardized questionnaires, including the Foot and Ankle Outcome Score (FAOS), University of California at Los Angeles (UCLA) activity score, EQ-5D, numerical rating scale (NRS), and Short-Form 36-item Health Survey (SF-36)...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28633777/shall-we-inject-superficial-or-deep-to-the-plantar-fascia-an-ultrasound-study-of-the-treatment-of-chronic-plantar-fasciitis
#20
Eda Gurcay, Murat Kara, Ozgur Zeliha Karaahmet, Ayşe Merve Ata, Şule Şahin Onat, Levent Özçakar
We compared the effectiveness of ultrasound (US)-guided corticosteroid, injected superficial or deep to the fascia, in patients with plantar fasciitis. Thirty patients (24 females [75%] and 6 males [25%]) with unilateral chronic plantar fasciitis were divided into 2 groups according to the corticosteroid injection site: superficial (n = 15) or deep (n = 15) to the plantar fascia. Patient heel pain was measured using a Likert pain scale and the Foot Ankle Outcome Scale (FAOS) for foot disability, evaluated at baseline and repeated in the first and sixth weeks...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
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