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https://www.readbyqxmd.com/read/30317916/angle-specific-knee-muscle-torques-of-acl-reconstructed-subjects-and-determinants-of-functional-tests-after-reconstruction
#1
Özge Çınar-Medeni, Gulcan Harput, Gul Baltaci
The purposes of this study were to analyse (a) if "angle-specific" (AS) flexor and extensor torques were different between ACL-reconstructed and uninvolved limbs, (b) the difference in peak torque occurrence angles for concentric and eccentric knee flexor and extensor torques between involved and uninvolved limbs and (c) if AS concentric and eccentric knee flexor and extensor torques are determinants of performance in the "single-leg hop test" (SLHT) and "vertical jump and reach test" (VJRT) in ACL-reconstructed legs...
October 13, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/30294433/does-pisiform-subluxation-affect-the-postoperative-outcomes-in-a-cohort-of-patients-with-distal-radius-fractures
#2
Yoichi Sugiyama, Kiyohito Naito, Hiroyuki Obata, Mayuko Kinoshita, Kenji Goto, Nana Nagura, Yoshiyuki Iwase, Kazuo Kaneko
Background: In this study, we retrospectively surveyed the presence or absence of pisiform subluxation in surgically treated distal radius fractures (DRF) cases. In addition, we investigated whether or not the postoperative short-term treatment outcome differs due to the presence of pisiform subluxation. Materials and methods: The subjects were 134 DRF patients treated with volar locking plate fixation (53 males and 81 females, mean age: 64 years old). The pisotriquetral joint was observed on a preoperative CT to investigate the presence or absence of pisiform subluxation according to the criteria reported by Vasilas...
November 2018: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/30273281/kinetic-analysis-of-isometric-back-squats-and-isometric-belt-squats
#3
Jacob S Layer, Christylynne Grenz, Taylour J Hinshaw, Derek T Smith, Steven F Barrett, Boyi Dai
Layer, JS, Grenz, C, Hinshaw, TJ, Smith, DT, Barrett, SF, and Dai, B. Kinetic analysis of isometric back squats and isometric belt squats. J Strength Cond Res XX(X): 000-000, 2018-Belt squats seem to provide an alternative to back squats. However, it is not clear how musculoskeletal loading differs between the two. This study compared lower extremity and low-back kinetics during isometric back squats and isometric belt squats. Sixteen men (age: 22.6 ± 3.4 years; height: 1.74 ± 0.11 m; mass: 82.0 ± 5.6 kg) and 10 women (age: 21...
September 28, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30248491/time-course-of-neuromechanical-and-morphological-adaptations-to-triceps-surae-isokinetic-eccentric-training
#4
Jeam Marcel Geremia, Bruno Manfredini Baroni, Fábio Juner Lanferdini, Rodrigo Rico Bini, Francesca Chaida Sonda, Marco Aurélio Vaz
OBJECTIVES: To document the magnitude and the time course of neuromechanical and morphological adaptations in response to a triceps surae eccentric training program. METHODS: Twenty healthy male subjects completed a control period followed by a 12-week isokinetic eccentric training program. Triceps surae neuromechanical and morphological evaluations were performed every 4 weeks. RESULTS: The training program led to increases in: eccentric (32%), isometric (13%) and concentric (20%) torques; eccentric (32%) and isometric (24%) electromyographic activity; and, muscle thickness (14%)...
September 7, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/30243674/conservative-treatment-of-distal-ulna-metaphyseal-fractures-associated-with-distal-radius-fractures-in-elderly-people
#5
Kotaro Sato, Kenya Murakami, Yoshikuni Mimata, Norio Numata, Hideo Shiraishi, Minoru Doita
INTRODUCTION: Although volar locking plates (VLPs) have been exclusively used for unstable distal radius fractures (DRFs), the optimal management of distal ulna fractures (DUFs) remains controversial. Internal fixation using a plate for DUFs might be challenging because of the presence of osteoporotic bone and fragile bone fragments in elderly patients. HYPOTHESIS: We hypothesized that a strategy including VLP fixation for DRFs and non-intervention for DUFs with early wrist mobilization would provide encouraging results in elderly patients...
September 19, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/30214122/effects-of-a-progressive-walking-program-on-the-risk-of-developing-locomotive-syndrome-in-elderly-japanese-people-a-single-arm-trial
#6
Toshinori Yoshihara, Hayao Ozaki, Takashi Nakagata, Toshiharu Natsume, Tomoharu Kitada, Yoshihiko Ishihara, Pengyu Deng, Takuya Osawa, Masayoshi Ishibashi, Muneaki Ishijima, Hiroyuki Kobayashi, Shuichi Machida, Hisashi Naito
[Purpose] This study aimed to identify the efficacy of a progressive walking program on the risk of developing locomotive syndrome among untrained elderly Japanese people. [Participants and Methods] Twenty-four untrained elderly individuals (68 ± 4 years) completed a 17-week progressive walking program. The stand-up, two-step tests and the 25-question geriatric locomotive function scale were used to assess the risk of locomotive syndrome at baseline, the 8-week midpoint (2 months), and the 17-week endpoint (4 months)...
September 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/30198898/improving-signal-strength-in-serial-crystallography-with-dials-geometry-refinement
#7
Aaron S Brewster, David G Waterman, James M Parkhurst, Richard J Gildea, Iris D Young, Lee J O'Riordan, Junko Yano, Graeme Winter, Gwyndaf Evans, Nicholas K Sauter
The DIALS diffraction-modeling software package has been applied to serial crystallography data. Diffraction modeling is an exercise in determining the experimental parameters, such as incident beam wavelength, crystal unit cell and orientation, and detector geometry, that are most consistent with the observed positions of Bragg spots. These parameters can be refined by nonlinear least-squares fitting. In previous work, it has been challenging to refine both the positions of the sensors (metrology) on multipanel imaging detectors such as the CSPAD and the orientations of all of the crystals studied...
September 1, 2018: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/30168510/-the-using-the-modern-technologies-simulators-for-the-strengthening-of-the-back-muscles-in-the-schoolchildren-suffering-from-first-degree-scoliosis
#8
V S Malysheva, V V Gorelik, V N Vlasov
BACKGROUND: Strengthening the health of the young people and adolescents is a priority task for the health care system. The posture, as a habitual position of the body of a person standing at ease, is formed in the course of the child's physical development including the development of the static-dynamic functions. The problems of rehabilitation of the school-age children arising from the necessity to correct impaired posture, including scoliosis, are associated with their life activity and the socio-economic status...
2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/30142913/experimental-study-on-the-laser-transmission-joining-of-polystyrene-and-titanium
#9
Pin Li, Jing Li, Wensheng Tan, Huixia Liu, Xiao Wang
To address the difficulty of joining polystyrene (PS) and titanium by laser transmission joining, two methods-laser treatment of the titanium surface and oxygen plasma treatment of the PS surface-are used to compare the laser transmission joint strengths of the different treatment methods. The results of the experiments find that joining with titanium can be achieved only when PS is treated with oxygen plasma. When the laser-treated surface of titanium is jointed to the oxygen plasma-treated PS, the joint strength is the highest, reaching 6...
August 23, 2018: Materials
https://www.readbyqxmd.com/read/30132353/development-of-an-unpowered-ankle-exoskeleton-for-walking-assist
#10
Justin Leclair, Scott Pardoel, Alexander Helal, Marc Doumit
AIM: Assistive technologies traditionally rely on either powered actuation or passive structures to provide increased strength, support or the ability to perform specific functions. At one end of the spectrum are powered exoskeletons, which significantly increase a user's strength, but require powerful actuators, complex control systems and heavy power sources. At the other end are orthoses, which are generally unpowered and light in weight, relying on the mechanical properties of passive mechanical elements...
August 22, 2018: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/30114973/effects-of-low-volume-isometric-leg-press-complex-training-at-two-knee-angles-on-force-angle-relationship-and-rate-of-force-development
#11
Gregory C Bogdanis, Athanasios Tsoukos, Spyridon K Methenitis, Elisavet Selima, Panagiotis Veligekas, Gerasimos Terzis
This study compared knee angle-specific neuromuscular adaptations after two low-volume isometric leg press complex training programmes performed at different muscle lengths. Fifteen young males were divided into two groups and trained three times per week for 6 weeks. One group (n = 8) performed 5-7 sets of 3 s maximum isometric leg press exercise, with 4 min recovery, with knee angle at 85° ± 2° (longer muscle-tendon unit length; L-MTU). The other group (n = 7) performed the same isometric training at a knee angle of 145° ± 2° (180°  = full extension; shorter muscle-tendon unit length; S-MTU)...
August 17, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/30102684/differences-in-the-electromyographic-activity-of-the-hamstring-gluteus-maximus-and-erector-spinae-muscles-in-a-variety-of-kinetic-changes
#12
Norikazu Hirose, Masaaki Tsuruike
Hirose, N and Tsuruike, M. Differences in the electromyographic activity of the hamstring, gluteus maximus, and erector spinae muscles in a variety of kinetic changes. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to clarify the differences in the electromyographic (EMG) activity of the semitendinosus (ST), semimembranosus (SM), biceps femoris long head (BFl), gluteus maximus (GM), and erector spinae (ES) muscles during leg curl and bridge exercises across different knee angles and isometric contraction outputs...
August 10, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30094358/comparative-3-dimensional-kinematic-analysis-of-snatch-technique-between-top-elite-and-sub-elite-male-weightlifters-in-69-kg-category
#13
Gongju Liu, Gusztáv Fekete, Hongchun Yang, Jing Ma, Dong Sun, Qichang Mei, Yaodong Gu
Objective: The purpose of this study was to determine the differences in technical characteristics between top-elite and sub-elite male weightlifters performing the snatch style in the 69-kg category. The obtained results can provide valuable information for lower level lifters and coaches to achieve better competition performance by altering their training methods accordingly. Methods: Six top-elite and six sub-elite weightlifters participated in this study. The heaviest successful snatch lift from the three attempts of each subject was analyzed...
July 2018: Heliyon
https://www.readbyqxmd.com/read/30091026/numerical-comparative-study-of-five-currently-used-implants-for-high-tibial-osteotomy-realistic-loading-including-muscle-forces-versus-simplified-experimental-loading
#14
Arnaud Diffo Kaze, Stefan Maas, Slawomir Kedziora, James Belsey, Alexander Haupert, Claude Wolf, Alexander Hoffmann, Dietrich Pape
BACKGROUND: Many different fixation devices are used to maintain the correction angle after medial open wedge high tibial osteotomy (MOWHTO). Each device must provide at least sufficient mechanical stability to avoid loss of correction and unwanted fracture of the contralateral cortex until the bone heals. In the present study, the mechanical stability of following different implants was compared: the TomoFix small stature (sm), the TomoFix standard (std), the Contour Lock, the iBalance and the second generation PEEKPower...
August 8, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/30090070/following-a-long-distance-classical-race-the-whole-body-kinematics-of-double-poling-by-elite-cross-country-skiers-are-altered
#15
Chiara Zoppirolli, Lorenzo Bortolan, Federico Stella, Gennaro Boccia, Hans-Christer Holmberg, Federico Schena, Barbara Pellegrini
Introduction: Although short-term (approximately 10-min) fatiguing DP has been reported not to alter the joint kinematics or displacement of the centre of mass (COM) of high-level skiers, we hypothesize that prolonged DP does change these kinematics, since muscular strength is impaired following endurance events lasting longer than 2 h. Methods: During the 58-km Marcialonga race in 2017, the fastest 15 male skiers were videofilmed (100 fps, FHD resolution in the sagittal plane) on two 20-m sections (inclines: 0...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/30057775/the-athletic-shoulder-ash-test-reliability-of-a-novel-upper-body-isometric-strength-test-in-elite-rugby-players
#16
Ben Ashworth, Patrick Hogben, Navraj Singh, Laura Tulloch, Daniel D Cohen
Objectives: Lower limb isometric tests are used to assess strength and strength asymmetries and monitor reductions in muscle force that may contribute to loss of performance and increase injury risk. Isometric tests in the upper body may be appropriate to monitor neuromuscular performance of the shoulder joint in sports involving contact and overhead actions. The aim of this study was to determine the reliability of a novel upper body isometric strength test. Methods: Eighteen elite rugby players (age 22...
2018: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/30026952/how-to-squat-effects-of-various-stance-widths-foot-placement-angles-and-level-of-experience-on-knee-hip-and-trunk-motion-and-loading
#17
Silvio Lorenzetti, Mira Ostermann, Fabian Zeidler, Pia Zimmer, Lina Jentsch, Renate List, William R Taylor, Florian Schellenberg
Background: Squatting is a core exercise for many purposes. The tissue loading during squatting is crucial for positive adaptation and to avoid injury. This study aimed to evaluate the effect of narrow, hip and wide stance widths, foot position angles (0°, 21°, and 42°), strength exercise experience, and barbell load (0 and 50% body weight, experts only) during squatting. Methods: Novice ( N  = 21) and experienced ( N  = 21) squatters performed 9 different variations of squats (3 stance widths, 3 foot placement angles)...
2018: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/30010483/balance-control-is-impaired-in-adults-with-sickle-cell-anaemia
#18
Priscila Oliveira Silva, Arthur Sá Ferreira, Carla Martins de Araujo Lima, Fernando Silva Guimarães, Agnaldo José Lopes
BACKGROUND: Musculoskeletal involvement and cerebrovascular disease are common in sickle cell anaemia (SCA). These changes are potentially important factors that modify the control of balance in this population. OBJECTIVE: To assess balance control in adults with SCA and investigate the associations among balance, posture and muscle function. METHODS: Twenty neurologically intact (i.e. without previous episodes of overt stroke or transient ischaemic attack) adults with SCA and 18 controls were evaluated...
July 16, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29995792/electromyographic-analysis-of-hip-and-knee-muscles-during-specific-exercise-movements-in-females-with-patellofemoral-pain-syndrome-an-observational-study
#19
Shuya Chen, Wen-Dien Chang, Jhih-Yun Wu, Yi-Chin Fong
Hip muscle strengthening and knee extensor strengthening are common training exercises for patellofemoral pain syndrome (PFPS). PFPS engendered by insufficient hip abductor and external rotator muscle strength has been of interest, but these exercise movements may increase the lateral vector force of the patella warrants clarification. So, the purpose of this study was to assess muscular activations of vastus lateralis (VL), vastus medialis oblique (VMO), and gluteus medius muscles in electromyographic analysis during hip abduction and external rotator movements and open and closed kinetic chain knee extension movements...
July 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29994552/a-novel-multi-standard-compliant-hand-function-assessment-method-using-an-infrared-imaging-device
#20
Qiang Fang, Seedahmed Mahmoud, Xudong Gu, Jianmin Fu
Many post-stroke patients suffer varying degrees of hand function and fine motor skills impairment. Both passive and active hand rehabilitation training are beneficial in improving the strength and dexterity of the hands. However, hand rehabilitation programs should be prescribed based on an accurate assessment of hand function. In this paper, we propose a novel method for hand function assessment which can accurately measure multiple joint angles of a hand simultaneously using a portable infrared based imaging device...
May 17, 2018: IEEE Journal of Biomedical and Health Informatics
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