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https://www.readbyqxmd.com/read/29673204/older-adults-with-weaker-muscle-strength-stand-up-from-a-sitting-position-with-more-dynamic-trunk-use
#1
Rob C van Lummel, Jordi Evers, Martijn Niessen, Peter J Beek, Jaap H van Dieën
The ability to stand up from a sitting position is essential for older adults to live independently. Body-fixed inertial sensors may provide an approach for quantifying the sit-to-stand (STS) in clinical settings. The aim of this study was to determine whether measurements of STS movements using body-fixed sensors yield parameters that are informative regarding changes in STS performance in older adults with reduced muscle strength. In twenty-seven healthy older adults, handgrip strength was assessed as a proxy for overall muscle strength...
April 17, 2018: Sensors
https://www.readbyqxmd.com/read/29649083/targeted-distraction-spinal-growth-in-children-with-early-onset-scoliosis-treated-with-a-tail-gating-technique-for-magnetically-controlled-growing-rods
#2
Mihai Mardare, David Christopher Kieser, Adil Ahmad, Thejasvi Subramanian, Shahnawaz Haleem, Chrishan Thakar, James Wilson-MacDonald, Colin Nnadi
STUDY DESIGN: Prospective cohort study OBJECTIVE.: To understand the efficacy of a tail-gating technique (TGT) to mirror the normal spinal growth of children with early-onset scoliosis (EOS) treated with magnetically controlled growing rods (MCGR). SUMMARY OF BACKGROUND DATA: MCGR allow outpatient distraction and guided spinal growth without the need for repeat surgery. Two techniques (maximal and targeted) are currently employed to determine the distraction amount, however the efficacy of each is unknown...
April 11, 2018: Spine
https://www.readbyqxmd.com/read/29621115/acute-effect-of-foam-rolling-and-dynamic-stretching-on-flexibility-and-jump-height
#3
Jason C Smith, Brooke Pridgeon, MacGregor C Hall
Smith, JC, Pridgeon, B, and Hall, MC. Acute effect of foam rolling and dynamic stretching on flexibility and jump height. J Strength Cond Res XX(X): 000-000, 2017-Dynamic stretching (DS) can acutely improve vertical jump (VJ) performance but its effect lasts no more than 5 minutes. Foam rolling (FR), a form of self-myofascial release, can acutely increase range of motion (ROM) with this effect lasting less than 10 minutes. Therefore, the purpose of this study was to evaluate the time course of these effects, separately and combined, on VJ height and ROM...
April 4, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29619391/neck-back-and-shoulder-pains-and-ergonomic-factors-among-dental-students
#4
Raha Habib Aghahi, Rezvan Darabi, Maryam Alsadat Hashemipour
BACKGROUND: Dynamic and static activities in dentistry cause musculoskeletal disorders, but dental students do not have sufficient awareness about the effects of ergonomic factors on their health. The aim of this study was to investigate ergonomic factors that cause pain muscle in dental students in Kerman Medical University, Iran. METHODS: This cross-sectional analysis study was carried out on dental students of the 3rd , 4th , 5th , and 6th year, in clinical practice in the School of Dentistry, Kerman University of Medical Sciences...
2018: Journal of Education and Health Promotion
https://www.readbyqxmd.com/read/29599856/influence-of-dynamic-neuromuscular-stabilization-approach-on-maximum-kayak-paddling-force
#5
Pavel Davidek, Ross Andel, Alena Kobesova
The purpose of this study was to examine the effect of Dynamic Neuromuscular Stabilization (DNS) exercise on maximum paddling force (PF) and self-reported pain perception in the shoulder girdle area in flatwater kayakers. Twenty male flatwater kayakers from a local club (age = 21.9 ± 2.4 years, body height = 185.1 ± 7.9 cm, body mass = 83.9 ± 9.1 kg) were randomly assigned to the intervention or control groups. During the 6-week study, subjects from both groups performed standard off-season training. Additionally, the intervention group engaged in a DNS-based core stabilization exercise program (quadruped exercise, side sitting exercise, sitting exercise and squat exercise) after each standard training session...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29584925/evaluating-extremely-low-frequency-magnetic-fields-in-the-rear-seats-of-the-electric-vehicles
#6
Jun Lin, Meng Lu, Tong Wu, Lei Yang, Tongning Wu
In the electric vehicles (EVs), children can sit on a safety seat installed in the rear seats. Owing to their smaller physical dimensions, their heads, generally, are closer to the underfloor electrical systems where the magnetic field (MF) exposure is the greatest. In this study, the magnetic flux density (B) was measured in the rear seats of 10 different EVs, for different driving sessions. We used the measurement results from different heights corresponding to the locations of the heads of an adult and an infant to calculate the induced electric field (E-field) strength using anatomical human models...
March 23, 2018: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29557678/rural-urban-variations-in-age-at-menarche-adult-height-leg-length-and-abdominal-adiposity-in-black-south-african-women-in-transitioning-south-africa
#7
Rihlat Said-Mohamed, Alessandra Prioreschi, Lukhanyo H Nyati, Alastair van Heerden, Richard J Munthali, Kathleen Kahn, Stephen M Tollman, Francesc Xavier Gómez-Olivé, Brian Houle, David B Dunger, Shane A Norris
BACKGROUND: The pre-pubertal socioeconomic environment may be an important determinant of age at menarche, adult height, body proportions and adiposity: traits closely linked to adolescent and adult health. AIMS: This study explored differences in age at menarche, adult height, relative leg-length and waist circumference between rural and urban black South African young adult women, who are at different stages of the nutrition and epidemiologic transitions. SUBJECTS AND METHODS: We compared 18-23 year-old black South African women, 482 urban-dwelling from Soweto and 509 from the rural Mpumalanga province...
March 20, 2018: Annals of Human Biology
https://www.readbyqxmd.com/read/29546846/individualized-adjustments-to-reference-phantom-internal-organ-dosimetry-scaling-factors-given-knowledge-of-patient-external-anatomy
#8
Michael B Wayson, Wesley E Bolch
Internal radiation dose estimates for diagnostic nuclear medicine procedures are typically calculated for a reference individual. Resultantly, there is uncertainty when determining the organ doses to patients who are not at 50th percentile on either height or weight. This study aims to better personalize internal radiation dose estimates for individual patients by modifying the dose estimates calculated for reference individuals based on easily obtainable morphometric characteristics of the patient. Phantoms of different sitting heights and waist circumferences were constructed based on computational reference phantoms for the newborn, 10-year-old, and adult...
March 16, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29545699/the-effect-of-insole-on-muscle-activity-and-muscle-fatigue-at-sit-to-standing-of-tibialis-anterior-and-gastrocnemius-in-adult-male
#9
Jin Young Kim
[Purpose] The purpose of this study was to investigate the effect of differing insole height on the electromyographic (EMG) activity and muscle fatigue in tibialis anterior and gastrocnemius a lot of repeat college students from the desk during a sit to stand activity. [Subjects and Methods] For the 30 subjects males, let them wear insole in order. Using EMG equipment measured the difference in muscle vitality and muscle fatigue degree. All subjects were measured for 3 seconds in standing up from the chair...
February 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29543816/body-position-and-motor-imagery-strategy-effects-on-imagining-gait-in-healthy-adults-results-from-a-cross-sectional-study
#10
Olivier Beauchet, Cyrille P Launay, Harmehr Sekhon, Jennifer Gautier, Julia Chabot, Elise J Levinoff, Gilles Allali
BACKGROUND: Assessment of changes in higher levels of gait control with aging is important to better understand age-related gait instability, with the perspective to improve the screening of individuals at risk for falls. The comparison between actual Timed Up and Go test (aTUG) and its imagined version (iTUG) is a simple clinical way to assess age-related changes in gait control. The modulations of iTUG performances by body positions and motor imagery (MI) strategies with normal aging have not been evaluated yet...
2018: PloS One
https://www.readbyqxmd.com/read/29540251/the-influence-of-stunting-on-obesity-in-adulthood-results-from-the-epiporto-cohort
#11
Ana Henriques, Vânia Teixeira, Hugo Fv Cardoso, Ana Azevedo
OBJECTIVE: To retrospectively investigate the association between short stature and increased sitting height ratio (SHR) - indicators of stunting - and obesity markers in adults. DESIGN: Cross-sectional evaluation of the EPIPorto cohort. Weight, height, sitting height and waist circumference were measured. Obesity was assessed for men and women through BMI and waist-to-height ratio (WHtR). Short stature (women, <152 cm; men, <164 cm) and high SHR (women, ≥54·05 %; men, ≥53·25 %) were taken as stunting measures...
March 15, 2018: Public Health Nutrition
https://www.readbyqxmd.com/read/29522366/effects-of-bilateral-swing-away-grab-bars-on-the-biomechanics-of-stand-to-sit-and-sit-to-stand-toilet-transfers
#12
Su Jin Lee, Ricky Mehta-Desai, Kyunggeune Oh, Jon Sanford, Boris I Prilutsky
PURPOSE: Kinetic characteristics of transfers to and from a toilet performed using bilateral grab bars are not fully quantified to inform grab bar design and configuration. The purpose of this study was to (1) determine effects of bilateral swing-away grab bars on peaks of ankle, knee and hip joint moments during grab bar assisted stand-to-sit and sit-to-stand transfers; and (2) determine effects of three different heights and widths of swing-away grab bars on the same kinetic characteristics...
March 9, 2018: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29518829/-a-national-survey-on-physical-growth-and-development-of-children-under-seven-years-of-age-in-nine-cities-of-china-in-2015
#13
(no author information available yet)
Objective: To investigate and analyze the status of physical growth and its change in children under 7 years of age in 9 cities of China, and to provide scientific data for renewing and developing the new growth reference of Chinese children. Methods: Data of healthy children under 7 years of age were collected by stratified cluster sampling method in Beijing, Harbin, Xi'an, Shanghai, Nanjing, Wuhan, Guangzhou, Fuzhou and Kunming during the period from June to November in 2015. They were divided into 22 age groups...
March 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29510715/stand-more-at-work-smart-work-using-the-behaviour-change-wheel-to-develop-an-intervention-to-reduce-sitting-time-in-the-workplace
#14
Fehmidah Munir, Stuart J H Biddle, Melanie J Davies, David Dunstan, David Esliger, Laura J Gray, Ben R Jackson, Sophie E O'Connell, Tom Yates, Charlotte L Edwardson
BACKGROUND: Sitting (sedentary behaviour) is widespread among desk-based office workers and a high level of sedentary behaviour is a risk factor for poor health. Reducing workplace sitting time is therefore an important prevention strategy. Interventions are more likely to be effective if they are theory and evidence-based. The Behaviour Change Wheel (BCW) provides a framework for intervention development. This article describes the development of the Stand More AT Work (SMArT Work) intervention, which aims to reduce sitting time among National Health Service (NHS) office-based workers in Leicester, UK...
March 6, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29499680/hand-grip-strength-and-maximum-peak-expiratory-flow-determinants-of-bone-mineral-density-of-adolescent-students
#15
Marco Cossio-Bolaños, Cynthia Lee-Andruske, Miguel de Arruda, Cristian Luarte-Rocha, Alejandro Almonacid-Fierro, Rossana Gómez-Campos
BACKGROUND: Maintaining and building healthy bones during the lifetime requires a complicated interaction between a number of physiological and lifestyle factors. Our goal of this study was to analyze the association between hand grip strength and the maximum peak expiratory flow with bone mineral density and content in adolescent students. METHODS: The research team studied 1427 adolescent students of both sexes (750 males and 677 females) between the ages of 11...
March 2, 2018: BMC Pediatrics
https://www.readbyqxmd.com/read/29496283/factors-affecting-lung-function-a-review-of-the-literature
#16
Alejandro Talaminos Barroso, Eduardo Márquez Martín, Laura María Roa Romero, Francisco Ortega Ruiz
Lung function reference values are traditionally based on anthropometric factors, such as weight, height, sex, and age. FVC and FEV1 decline with age, while volumes and capacities, such as RV and FRC, increase. TLC, VC, RV, FVC and FEV1 are affected by height, since they are proportional to body size. This means that a tall individual will experience greater decrease in lung volumes as they get older. Some variables, such as FRC and ERV, decline exponentially with an increase in weight, to the extent that tidal volume in morbidly obese patients can be close to that of RV...
February 26, 2018: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/29478378/the-effects-of-3-month-skill-based-and-plyometric-conditioning-on-fitness-parameters-in-junior-female-volleyball-players
#17
Kemal Idrizovic, Bahri Gjinovci, Damir Sekulic, Ognjen Uljevic, Paulo Vicente João, Miodrag Spasic, Tine Sattler
PURPOSE: This study compared the effects of skill-based and plyometric conditioning (both performed in addition to regular volleyball training twice a week for 12 wk) on fitness parameters in female junior volleyball players. METHODS: The participants [n = 47; age: 16.6 (0.6) y; mass: 59.4 (8.1) kg; height: 175.1 (3.0) cm] were randomized into a plyometric (n = 13), a skill-based (n = 17), and a control (n = 17) groups. The variables included body height, body mass, calf girth, calf skinfold, corrected calf girth, countermovement jump, 20-m-sprint, medicine ball toss, and sit-and-reach test...
February 24, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29474490/reproducibility-of-estimated-optimal-peak-output-using-a-force-velocity-test-on-a-cycle-ergometer
#18
Manuel J Coelho-E-Silva, Ricardo Rebelo-Gonçalves, Diogo Martinho, Alexis Ahmed, Leonardo G O Luz, João P Duarte, Vítor Severino, Rafael C Baptista, João Valente-Dos-Santos, Vasco Vaz, Rui S Gonçalves, Antonio Tessitore, António J Figueiredo
The current study aimed to examine the reproducibility of estimated peak power and estimated pedal velocity in a multi-trial 10-s all-out cycling test among adult athletes (n = 22; aged 23.50±4.73 years). Stature, sitting height and body mass were measured. Leg length was estimated as stature minus sitting height. Body volume was obtained from air displacement plethysmography and was subsequently used to calculate body density. Fat mass and fat-free mass were derived. The short-term power outputs were assessed from the force-velocity test (FVT), using a friction-braked ergometer on two separated occasions...
2018: PloS One
https://www.readbyqxmd.com/read/29470414/the-sitting-height-index-of-build-body-mass-sitting-height-%C3%A2-as-an-improvement-on-the-body-mass-index-for-children-adolescents-and-young-adults
#19
Richard Burton
The body mass index (BMI) is unsatisfactory in being affected by both relative leg length and height, and, for use with children and adolescents, therefore needs to be interpreted in relation to age. The sitting-height index of build (body mass)/(sitting height)³, is largely free of these disadvantages. Furthermore, because that index is independent of relative leg length, the latter can be treated as a separate indicator of nutritional history and health risks. Past studies on white children and adults have shown body mass to be approximately proportional to (sitting height)³...
February 22, 2018: Children
https://www.readbyqxmd.com/read/29461419/morphological-and-physical-fitness-profile-of-young-female-sprint-kayakers
#20
Daniel López-Plaza, Fernando Alacid, Jacobo Ángel Rubio, Pedro Ángel López-Miñarro, José María Muyor, Pedro Manonelles
Traditionally, physical and anthropometrical profiles of the most successful kayak athletes have been identified in male kayakers. This study attempted to identify the differences in morphology and fitness level of two performance-based groups of young elite female paddlers. Eighty-six female kayakers, aged 13.62 ± 0.57 years (mean ± SD) were allocated in two groups (Top-10 and Rest) depending on their ranking in the three Olympic distances (200, 500 and 1000 meters). All subjects underwent a battery of anthropometrical (heights, weight, girths and sum of skinfolds), physical fitness (overhead medicine ball throw, countermovement jump, sit-and-reach test and 20-m multistage shuttle run test) and specific performance assessments (200, 500 and 1000 meters)...
February 14, 2018: Journal of Strength and Conditioning Research
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