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https://www.readbyqxmd.com/read/28432921/gates-for-soluble-and-membrane-proteins-and-two-trafficking-systems-ift-and-lift-establish-a-dynamic-ciliary-signaling-compartment
#1
REVIEW
Victor L Jensen, Michel R Leroux
Primary cilia are microtubule-based organelles found on most mammalian cell surfaces. They possess a soluble matrix and membrane contiguous with the cell body cytosol and plasma membrane, and yet, have distinct compositions that can be modulated to enable dynamic signal transduction. Here, we discuss how specialized ciliary compartments are established using a coordinated network of gating, trafficking and targeting activities. Cilium homeostasis is maintained by a size-selective molecular mesh that limits soluble protein entry, and by a membrane diffusion barrier localized at the transition zone...
April 19, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28432911/lifting-the-lid-on-geographic-complexity-in-the-relationship-between-body-mass-index-and-education-in-china
#2
Maigeng Zhou, Xiaoqi Feng, Jiang Yong, Yichong Li, Mei Zhang, Andrew Page, Thomas Astell-Burt, Wenhua Zhao
In China, rising obesity has coincided with increasing affluence. Few studies have properly accounted for geographic variation, however, which may influence prior results. Using large data with biomarkers in China, we show body mass index (BMI) to be positively correlated with higher person-level education if estimated using ordinary least squares. In stark contrast, fitting the same data within a multilevel model gives the complete opposite result. We go on to show that the relationship between BMI and person-level education in China is dependent upon geography, underlining why multilevel modelling is crucial for revealing these types of people-place contingencies...
April 19, 2017: Health & Place
https://www.readbyqxmd.com/read/28428836/muscle-function-and-fatigability-of-trunk-flexors-in-males-and-females
#3
Rita E Deering, Jonathon W Senefeld, Tatyana Pashibin, Donald A Neumann, Sandra K Hunter
BACKGROUND: Optimal function of the abdominal muscles is necessary for several life functions including lifting and carrying tasks. Sex differences in strength and fatigability are established for many limb muscles and back extensor muscles, but it is unknown if sex differences exist for the abdominal muscles despite their functional importance. METHODS: Eighteen females (24.3 ± 4.8 years) and 15 males (24.1 ± 6.6 years) performed (1) isometric trunk flexion maximal voluntary contractions (MVCs) in a range of trunk positions to establish a torque-angle curve and (2) submaximal (50% MVC), intermittent isometric contraction (6 s on, 4 s off) until task failure to determine fatigability of the trunk flexor muscles...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28427472/optimising-conservative-management-of-chronic-low-back-pain-study-protocol-for-a-randomised-controlled-trial
#4
Katherine J Simson, Clint T Miller, Jon Ford, Andrew Hahne, Luana Main, Timo Rantalainen, Wei-Peng Teo, Megan Teychenne, David Connell, Guy Trudel, Guoyan Zheng, Gary Thickbroom, Daniel L Belavy
BACKGROUND: Lower back pain is a global health issue affecting approximately 80% of people at some stage in their life. The current literature suggests that any exercise is beneficial for reducing back pain. However, as pain is a subjective evaluation and physical deficits are evident in low back pain, using it as the sole outcome measure to evaluate superiority of an exercise protocol for low back pain treatment is insufficient. The overarching goal of the current clinical trial is to implement two common, conservative intervention approaches and examine their impact on deficits in chronic low back pain...
April 20, 2017: Trials
https://www.readbyqxmd.com/read/28420483/an-evaluation-of-wearable-sensors-and-their-placements-for-analyzing-construction-worker-s-trunk-posture-in-laboratory-conditions
#5
Wonil Lee, Edmund Seto, Ken-Yu Lin, Giovanni C Migliaccio
This study investigates the effect of sensor placement on the analysis of trunk posture for construction activities using two off-the-shelf systems. Experiments were performed using a single-parameter monitoring wearable sensor (SPMWS), the ActiGraph GT9X Link, which was worn at six locations on the body, and a multi-parameter monitoring wearable sensor (MPMWS), the Zephyr BioHarness™3, which was worn at two body positions. One healthy male was recruited and conducted 10 experiment sessions to repeat measurements of trunk posture within our study...
April 15, 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28415066/effect-of-barbell-weight-on-the-structure-of-the-flat-bench-press
#6
Henryk Król, Artur Gołaś
Król, H and Gołaś, A. Effect of barbell weight on the structure of the flat bench press. J Strength Cond Res 31(5): 1321-1337, 2017-In this study, we have used the multimodular measuring system SMART. The system consisted of 6 infrared cameras and a wireless module to measure muscle bioelectric activity. In addition, the path of the barbell was measured with a special device called the pantograph. Our study concerns the change in the structure of the flat bench press when the weight of the barbell is increased...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28406826/the-lipo-body-lift-a-new-circumferential-body-contouring-technique-useful-after-bariatric-surgery
#7
Morgane Atanasiu, Audrey Patoué
No abstract text is available yet for this article.
April 3, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28402232/combined-exposures-of-whole-body-vibration-and-awkward-posture-a-cross-sectional-investigation-among-occupational-drivers-by-means-of-simultaneous-field-measurements
#8
Nastaran Raffler, Jörg Rissler, Rolf Ellegast, Christian Schikowsky, Thomas Kraus, Elke Ochsmann
OBJECTIVE: Multifactorial work loads such as whole-body vibration (WBV), awkward posture and heavy lifting are potential predictors for low back pain (LBP). In this study we investigate the association between LBP and these exposures among 102 professional drivers. METHODS: The combined exposures of WBV and posture are measured at different workplaces. Health and personal data as well as information about lifting tasks are collected by a questionnaire. RESULTS: The daily vibration exposure value (odds ratio 1...
April 12, 2017: Ergonomics
https://www.readbyqxmd.com/read/28398515/gluteal-implants-versus-autologous-flaps-in-patients-with-postbariatric-surgery-weight-loss-a-prospective-comparative-study-of-3-dimensional-gluteal-projection-after-lower-body-lift
#9
Philippe Levan, Samer Bassilios Habre
Background: Deformities and excess skin resulting from massive weight loss are corrected with circumferential lower body lift (LBL). The gluteal area is frequently flattened due to aggressive skin excision during LBL. Gluteal implants can circumvent this problem. Objectives: We aimed to objectively evaluate the outcomes of gluteal augmentation with implants versus flap surgery performed simultaneously with LBL. Methods: Between January 2014 and June 2015, twenty-seven patients underwent LBL with gluteal implants (10 patients), flaps (14 patients), or no gluteal augmentation (3 patients) in our hospital...
April 7, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28394829/electromyographical-comparison-of-muscle-activation-patterns-across-three-commonly-performed-kettlebell-exercises
#10
Brian C Lyons, Jerry J Mayo, W Steve Tucker, Ben Wax, Russell C Hendrix
The purpose of this study was to compare the muscle activation patterns of three different kettlebell (KB) exercises using electromyography (EMG). Fourteen resistance-trained subjects completed a one-arm swing (Swing), one-arm swing style snatch (Snatch), and a one-arm clean (Clean) using a self-selected 8-10 RM load for each exercise. Trial sessions consisted of subjects performing 5 repetitions of each kettlebell exercise. Mean EMG was used to assess the muscle activation of the biceps brachii (BB), anterior deltoid (AD), posterior deltoid (PD), erector spinae (ES), vastus lateralis (VL), biceps femoris (BF), contralateral external oblique (EO), and gluteus maximus (GM) during each lift using surface electrodes...
December 20, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28391246/influence-of-obesity-and-physical-workload-on-disability-benefits-among-construction-workers-followed-up-for-37-years
#11
Suzan J W Robroek, Bengt Järvholm, Allard J van der Beek, Karin I Proper, Jens Wahlström, Alex Burdorf
OBJECTIVES: The objectives of this study are to investigate the relation between obesity and labour force exit via diagnosis-specific disability benefits, and whether physical workload modifies this association. METHODS: A longitudinal analysis was performed among 3 28 743 Swedish construction workers in the age of 15-65 years. Body weight and height were measured at a health examination and enriched with register information on disability benefits up to 37 years later...
April 8, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28387168/numerical-simulation-of-motion-and-deformation-of-healthy-and-sick-red-blood-cell-through-a-constricted-vessel-using-hybrid-lattice-boltzmann-immersed-boundary-method
#12
Amir Hassanzadeh, Nader Pourmahmoud, Abdolrahman Dadvand
In the present article, hybrid lattice Boltzmann-immersed boundary method is utilized to simulate two-dimensional incompressible viscous flow involving flexible immersed red blood cell (RBC) in a microchannel. The main focus of the present research is to study motion and deformation of both healthy and sick RBCs in a vessel with different sizes of stenosis. The presented computational results consent reasonably well with the available data in the literature. Two different channels i.e. a simple and a constricted channel are investigated in the present manuscript...
May 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28378984/impact-of-spinal-pain-on-daily-living-activities-in-postmenopausal-women-working-in-agriculture
#13
Dorota Raczkiewicz, Alfred Owoc, Beata Sarecka-Hujar, Tomasz Saran, Iwona Bojar
INTRODUCTION AND OBJECTIVE: Postmenopausal women working in agriculture suffer from spinal pain for two overlapping reasons, the first is related to the menopause and the second to the specificity of rural work, which includes lifting heavy objects and changing weather conditions. Spinal pain affects the daily life of women as well as their ability to work. The objective of the study was to analyse the impact of spinal pain on activities of daily life in Polish postmenopausal women performing agricultural work...
March 22, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28378981/knee-osteoarthritis-in-a-chestnut-farmer-case-report
#14
Stefano Mattioli, Francesca Graziosi, Stefania Curti, Roberta Bonfiglioli, Antonio Argentino, Francesco Saverio Violante
INTRODUCTION: Several studies have dealt with the issue of professional risk factors and onset of knee osteoarthritis (OA). In particular, occupational epidemiological studies have provided evidence that activities resulting in biomechanical overload may be linked with an increased risk of knee OA - also among farmers. To our knowledge, no cases of knee OA among chestnut farmers have been reported in the literature. CASE REPORT: We report the case of a 70-year-old Caucasian male who has worked for more than 50 years on a chestnut farm...
March 21, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28372678/randomized-trial-of-a-novel-double-lumen-nasopharyngeal-catheter-versus-traditional-nasal-cannula-during-total-intravenous-anesthesia-for-gastrointestinal-procedures
#15
Adam B King, Bret D Alvis, Douglas Hester, Susan Taylor, Michael Higgins
STUDY OBJECTIVE: Patients undergoing general anesthesia routinely experience episodes of hypoxemia. There are multiple causes of procedural oxygen desaturation including upper airway obstruction and central hypoventilation. We hypothesize that oxygen supplementation via nasopharyngeal catheter (NPC) will decrease the number of episodes of hypoxemia as compared to traditional NC oxygen supplementation in patients undergoing general anesthesia provided by an anesthesia provider for gastrointestinal endoscopy procedures...
May 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28372537/a-biomechanical-comparison-of-successful-and-unsuccessful-power-clean-attempts
#16
Kristof Kipp, Carolyn Meinerz
Although the power clean is an almost ubiquitous exercise in the strength and conditioning setting, relatively little is known about the biomechanics of successful and unsuccessful power clean lift attempts. The purpose of this study was to determine biomechanical differences between successful and unsuccessful power clean lift attempts in male collegiate athletes. Fifteen male lacrosse players (Age: 20.1 ± 1.2; Height: 1.78 ± 0.07 m; Body mass: 80.4 ± 8.1 kg; Relative one-repetition maximum power clean: 1...
June 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28344451/retrospective-injury-epidemiology-and-risk-factors-for-injury-in-crossfit
#17
Alicia M Montalvo, Hilary Shaefer, Belinda Rodriguez, Tan Li, Katrina Epnere, Gregory D Myer
The objective of the study is to examine injury epidemiology and risk factors for injury in CrossFit athletes. A survey was administered to athletes at four owner-operated facilities in South Florida. Respondents reported number, location of injury, and training exposure from the preceding six months and answered questions regarding potential risk factors for injury. Fifty out of 191 athletes sustained 62 injuries during CrossFit participation in the preceding six months. The most frequently injured locations were the shoulder, knee, and lower back...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28339418/survey-of-kinesiologists-functional-capacity-evaluation-practice-in-canada
#18
Kathryn E Sinden, Taya L McGillivary, Elizabeth Chapman, Steven L Fischer
BACKGROUND: In Canada, functional capacity evaluations (FCEs) are commonly administered by several health care professions including kinesiologists. Kinesiologists have been recently regulated as health care professionals in Ontario and we know little about their demographics, the frequency of FCE administration, or the types of FCEs used by this group. OBJECTIVE: The purposes of this study were to identify: 1) the demographic characteristics and FCE education of kinesiology FCE practitioners; 2) the FCE systems most used by these practitioners and 3) the constructs from assessments used to determine functional capacity...
2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28320364/the-weight-of-pupils-schoolbags-in-early-school-age-and-its-influence-on-body-posture
#19
Anna Brzęk, Tarja Dworrak, Markus Strauss, Fabian Sanchis-Gomar, Ibtissam Sabbah, Birgit Dworrak, Roman Leischik
BACKGROUND: Postural development progresses through a series of stages (growth spurts, development of balance and coordination, postural stability) which occur when children are at school age. The reduction in the level of physical activity, increased body weight, overloaded school bags, asymmetry of the backpack straps, the method of putting on and taking off the backpacks and increased usage of electronic devices have negative side effects such as bad body posture habits. METHODS: A prospective cohort study in the group of 155 pupils at early school age 7-9 years old has been conducted...
March 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28319141/heightened-clinical-utility-of-smartphone-versus-body-worn-inertial-system-for-shoulder-function-b-b-score
#20
Claude Pichonnaz, Kamiar Aminian, Céline Ancey, Hervé Jaccard, Estelle Lécureux, Cyntia Duc, Alain Farron, Brigitte M Jolles, Nigel Gleeson
BACKGROUND: The B-B Score is a straightforward kinematic shoulder function score including only two movements (hand to the Back + lift hand as to change a Bulb) that demonstrated sound measurement properties for patients for various shoulder pathologies. However, the B-B Score results using a smartphone or a reference system have not yet been compared. Provided that the measurement properties are comparable, the use of a smartphone would offer substantial practical advantages. This study investigated the concurrent validity of a smartphone and a reference inertial system for the measurement of the kinematic shoulder function B-B Score...
2017: PloS One
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