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https://www.readbyqxmd.com/read/28632661/efficacy-and-limitations-of-conservative-treatment-for-painful-patella-partita-positioning-of-an-ultrasound-accelerated-fracture-healing-apparatus
#1
Natsuki Sugimura, Daisuke Hirose, Koji Aso, Masashi Izumi, Yusuke Okanoue, Kazuo Kitaoka, Masahiko Ikeuchi
OBJECTIVE: Generally, painful patella partita is conservatively treated, but the usefulness of a low-intensity pulsed ultrasound (LIPUS) healing apparatus is unclear. The objective of this study was to investigate the usefulness of LIPUS for conservative treatment of painful patella partita. SUBJECTS AND METHODS: The subjects included 17 patients diagnosed with painful patella partita. The subjects were divided into 2 groups: those without pain at 6 months (responsive group) and those with pain that persisted for 6 months or longer (non-responsive group)...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28632065/muscle-activation-sequencing-of-leg-muscles-during-linear-glide-shot-putting
#2
Róisín M Howard, Richard Conway, Andrew J Harrison
In the shot put, the athlete's muscles are responsible for generating the impulses to move the athlete and project the shot into the air. Information on phasic muscle activity is lacking for the glide shot put event and therefore important technical information for coaches is not currently available. This study provides an electromyography (EMG) analysis of the muscle activity of the legs during shot put. Fifteen right-handed Irish national level shot putters performed six maximum effort throws using the glide shot put technique...
March 1, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28630852/adult-traumatic-inferior-hip-dislocation-rare-case-ended-with-open-reduction
#3
Salam Ismael, J Vora, P Thomas
INTRODUCTION: An inferior hip dislocation also called luxatio erecta femoris is a rare type of hip dislocation that is not widely reported in literature. Only 12 cases are reported in British literature. CASE REPORT: This article reports a 17-year-old male involved in a road traffic accident, sustaining inferior hip dislocation. Following resuscitation, computed tomography confirmed the clinical diagnoses. Several attempts to perform a closed reduction of the hip under sedation and general anesthesia failed to reduce the dislocation...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28629941/does-patella-lowering-improve-crouch-gait-in-cerebral-palsy-comparative-retrospective-study
#4
Eric Desailly, Camille Thévenin-Lemoine, Nejib Khouri
BACKGROUND: Patellalowering aims to improve quadriceps function as a means of correcting crouch gait in patients with cerebral palsy (PC). Few studies have assessed the effects of patella lowering as a component of multilevel surgery. HYPOTHESIS: Including patella lowering into the components of multilevel surgery is beneficial in patients with crouch gait and patella alta. MATERIAL ET METHODS: In 12 lower limbs with patella alta (Caton-Deschamps index >1...
June 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28628543/bilateral-rectus-femoris-muscle-rupture-following-statin-medication
#5
Kamal Mezian, Jan Vacek, Leoš Navrátil, Levent Özçakar
No abstract text is available yet for this article.
July 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28628370/multiple-joint-exercises-using-elastic-resistance-bands-vs-conventional-resistance-training-equipment-a-cross-over-study
#6
Vegard M Iversen, Paul Jarle Mork, Ottar Vasseljen, Ronny Bergquist, Marius S Fimland
Previous studies indicate that elastic resistance bands (ERB) can be a viable option to conventional resistance-training equipment (CRE) during single-joint resistance exercises, but their efficacy has not been established for several commonly used multiple-joint resistance exercises. Thus, we compared muscular activation levels in four popular multiple-joint exercises performed with ERB (TheraBand(®)) vs. CRE (Olympic barbell or cable pulley machines). In a cross-over design, men and women (n = 29) performed squats, stiff-legged deadlifts, unilateral rows and lateral pulldown using both modalities...
June 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28626321/the-effects-of-changes-in-support-and-inclined-boards-on-lower-extremity-muscle-activity
#7
Sangyong Lee, Yoon-Hee Choi, Janggon Kim
[Purpose] The purpose of this study was to identify the effects of changes in support and inclined boards on lower-extremity muscle activity. [Subjects and Methods] The study subjects were 15 healthy adult males. Aero-Step equipment was used as an unstable support, and an inclined board was used to maintain angles of 0° and 20°. Electromyography was employed to analyze lower-extremity muscle activity. [Results] The vastus lateralis, vastus medialis, rectus femoris, gastrocnemius, soleus, and tibialis anterior muscles showed significant differences according to changes in the support and inclined board...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28614163/effect-of-low-volume-high-intensity-interval-exercise-and-continuous-exercise-on-delayed-onset-muscle-soreness-in-untrained-healthy-males
#8
Luiz F Farias Junior, Rodrigo A V Browne, Danniel T Frazão, Teresa C B Dantas, Paulo H M Silva, Rodrigo P A Freitas, Marcelo S Aoki, Eduardo C Costa
The aim of this study was to compare the effect of a single session of a low-volume high-intensity interval exercise (HIIE) and a continuous exercise (CE) on the magnitude of delayed onset-muscle soreness (DOMS) in untrained healthy males. Fifteen participants (25.1±4.4 years) completed 2 experimental sessions in a randomized order: (a) low-volume HIIE: 10 x 60 s at 90% of maximal velocity (MV) interspersed with 60s of active recovery at 30% of MV; and (b) CE: 20 min at 60% of MV. Pressure-pain threshold (PPT), pressure-pain tolerance (PPTol) and perceived pain intensity (PPI) were assessed in the rectus femoris, biceps femoris and gastrocnemius before and 24 hours post-exercise...
June 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28611677/greater-neural-adaptations-following-high-vs-low-load-resistance-training
#9
Nathaniel D M Jenkins, Amelia A Miramonti, Ethan C Hill, Cory M Smith, Kristen C Cochrane-Snyman, Terry J Housh, Joel T Cramer
We examined the neuromuscular adaptations following 3 and 6 weeks of 80 vs. 30% one repetition maximum (1RM) resistance training to failure in the leg extensors. Twenty-six men (age = 23.1 ± 4.7 years) were randomly assigned to a high- (80% 1RM; n = 13) or low-load (30% 1RM; n = 13) resistance training group and completed leg extension resistance training to failure 3 times per week for 6 weeks. Testing was completed at baseline, 3, and 6 weeks of training. During each testing session, ultrasound muscle thickness and echo intensity, 1RM strength, maximal voluntary isometric contraction (MVIC) strength, and contractile properties of the quadriceps femoris were measured...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28607221/vastus-lateralis-and-rectus-femoris-echo-intensity-fail-to-reflect-knee-extensor-specific-tension-in-middle-school-boys
#10
Jacob Mota, Matt S Stock, Brennan Thompson
The potential dissociation between muscle strength and size has led to interest in the ability to assess muscle quality across the lifespan. We examined the association between echo intensity and specific tension in middle-school boys. Twenty-five boys participated in this study. Sixteen (mean ± SD age = 12 ± 1 years) engaged in a 16-week after-school strength and conditioning program. Nine boys (12 ± 1 years) served as controls. The program involved two, 90 minute sessions per week of lower-body speed, power, and resistance training...
June 13, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28606648/reliability-of-sonographic-assessment-of-biceps-femoris-distal-tendon-strain-during-passive-stretching
#11
Eleftherios Kellis, Athanasios Ellinoudis, Konstantina Intziegianni
The purpose of this study was to determine the intra-rater, inter-examiner and inter-observer reliability of biceps femoris long head (BFlh) tendon strain using ultrasound imaging. Nineteen patients (age: 20.4 ± 0.35 y) were tested twice with a 1-wk interval. Each session included passive stretching from three different hip positions. Tests were performed independently by two examiners while BFlh tendon displacement (mm) and strain (%) were manually extracted from ultrasound video footages by two observers...
June 9, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28605694/effect-of-increased-kick-frequency-on-propelling-efficiency-and-muscular-co-activation-during-underwater-dolphin-kick
#12
Keisuke Kobayashi Yamakawa, Hirofumi Shimojo, Hideki Takagi, Shozo Tsubakimoto, Yasuo Sengoku
In this study, we investigated the effects of increased kick frequency on the propelling efficiency and the muscular co-activation during underwater dolphin kick. Participants included eight female collegiate swimmers. The participants performed seven 15-m underwater dolphin kick swimming trials at different kick frequencies, which is 85, 90, 95, 100, 105, 110, and 115% of their maximum effort. The Froude (propelling) efficiency of the dolphin kick was calculated from the kinematic analysis. The surface electromyography was measured from six muscles (rectus abdominis, erector spinae, rectus femoris, biceps femoris, tibialis anterior, and gastrocnemius)...
June 9, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28605265/associations-between-individual-lower-limb-muscle-volumes-and-100-m-sprint-time-in-male-sprinters
#13
Norihide Sugisaki, Kai Kobayashi, Hiroyasu Tsuchie, Hiroaki Kanehisa
PURPOSE: To elucidate the relationship between the muscularity of individual lower limb muscles and 100-m race time (t100) in young adult male sprinters. METHODS: A total of 31 young adult male sprinters took part in this study (age, 19.9 ± 1.4 years; height, 173.5 ± 4.6 cm; body mass, 67.0 ± 4.9 kg; t100, 10.23-11.71 s). The cross-sectional images from the origin to insertion of 12 lower limb muscles were obtained with a magnetic resonance imaging (MRI) system...
June 12, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28602902/case-report-a-durable-open-repair-of-a-rare-profunda-aneurysm
#14
Pouria Parsa, Anthony Rios, Kristha Cantu, John Eidt, Dennis Gable, Gregory Pearl
Profunda femoris artery aneurysms (PFAAs) are rare and difficult to diagnose in the early stages of development due to location and encasement in the deep thigh musculature. We report the case of a 74-year-old male who was discovered to have a right PFAA during evaluation for progressively worsening short distance claudication. He had undergone an angioplasty of the left iliofemoral system several months ago with no improvement of his symptoms. The PFAA was diagnosed through CT angiography and repaired via syndactylization of profunda femoris branches and interposition grafting with a polytetrafluoroethylene stretch graft...
June 7, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28596974/magnetic-resonance-imaging-appearance-of-the-hip-musculature-after-arthroscopic-labral-level-iliopsoas-tenotomies
#15
Brian E Walczak, Donna G Blankenbaker, Michael R Tuite, James S Keene
BACKGROUND: Iliopsoas (IP) muscle atrophy is a known consequence of open IP tenotomy, but the severity of IP muscle atrophy that occurs after arthroscopic labral-level IP tenotomies has not been documented. PURPOSE: To document the severity of muscle atrophy that occurs in the iliacus, psoas, and adjacent hip musculature after arthroscopic labral-level IP tenotomy. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Twenty-eight patients who had magnetic resonance arthrograms (MRAs) obtained prior to and 3 months to 5 years after arthroscopic labral-level IP tenotomies are the basis of this report...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28595237/a-comparison-of-muscle-activation-between-back-squats-and-belt-squats
#16
Thomas W Evans, Cherilyn N McLester, Jonathan H Howard, John R McLester, Jimmy P Calloway
A machine belt squat is a piece of equipment designed to allow the performance of squats while loading weight on the lifter's hips using a belt. The purpose of this investigation was to determine if belt squats differ from back squats in activation of the primary movers, and to determine the predictive capabilities of back squat load, training status, and anthropometric data on belt squat load. Thirty-one participants (16 males and 15 females) completed anthropometric measurements, a demographic questionnaire, a familiarization visit, and two testing visits, completing a 5 repetition maximum test for back squat and belt squat...
June 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28594464/do-changes-in-neuromuscular-activation-contribute-to-the-knee-extensor-angle-torque-relationship
#17
Marcel B Lanza, Thomas G Balshaw, Jonathan P Folland
The influence of joint angle on knee extensor neuromuscular activation is unclear due in part due to the diversity of surface electromyography (sEMG) and/or interpolated twitch technique (ITT) methods employed. The aim of the study was to compare neuromuscular activation, using rigorous contemporary sEMG and ITT procedures, during isometric maximal voluntary contractions (iMVC) of the quadriceps femoris (Q) at different knee-joint angles and examine if activation contributes to the angle-torque relationship...
June 8, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28579089/muscle-strength-and-force-development-in-high-and-low-functioning-elderly-men-influence-of-muscular-and-neural-factors
#18
Charlotte H Pion, Sébastien Barbat-Artigas, Félix St-Jean-Pelletier, Stéphanie Chevalier, Pierrette Gaudreau, Gilles Gouspillou, José A Morais, Marc Bélanger, Mylène Aubertin-Leheudre
BACKGROUND: Aging leads to a loss of muscle strength and functional capacity likely resulting from a combination of neural and muscle alterations. The aim of this study was to identify possible disparities in muscle strength and force development profiles in high- and low-functioning elderly men and to investigate muscular and neurophysiological factors that could explain the differences. METHODS: Sixty community-dwelling men in good general health were divided in two groups based on a functional capacity (FC) z-score derived from 6 tests of the Short Physical Performance Battery and Senior Fitness Test (Normal and fast 4m-walk tests, normal and fast Timed-up and go, chair and stair tests)...
June 1, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28573973/knee-flexion-with-quadriceps-cocontraction-a-new-therapeutic-exercise-for-the-early-stage-of-acl-rehabilitation
#19
Andrea Biscarini, Samuele Contemori, Daniele Busti, Fabio M Botti, Vito E Pettorossi
Quadriceps strengthening exercises designed for the early phase of anterior cruciate ligament (ACL) rehabilitation should limit the anterior tibial translation developed by quadriceps contraction near full knee extension, in order to avoid excessive strain on the healing tissue. We hypothesize that knee-flexion exercises with simultaneous voluntary contraction of quadriceps (voluntary quadriceps cocontraction) can yield considerable levels of quadriceps activation while preventing the tibia from translating forward relative to the femur...
December 8, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28559756/multimodal-care-in-the-management-of-a-patient-with-chronic-tendinopathy-of-the-biceps-femoris-a-case-report
#20
Brett R Martin
OBJECTIVE: The purpose of this case report was to describe the use of dry needling in conjunction with auricular acupuncture, core exercises, and light aerobic activity for treating chronic tendinopathy of the biceps femoris. CLINICAL FEATURES: A 30-year-old white female presented with chronic biceps femoris tendinopathy. The injury had occurred 18 months prior while training for a triathlon. Active stretching of her right biceps femoris while standing with her feet 6 inches apart aggravated the pain at the origin in the right tendon of the biceps femoris at 0 degrees of movement...
June 2017: Journal of Chiropractic Medicine
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