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https://www.readbyqxmd.com/read/28530097/total-particle-number-emissions-from-modern-diesel-natural-gas-and-hybrid-heavy-duty-vehicles-during-on-road-operation
#1
Tianyang Wang, David Christopher Quiros, Arvind Thiruvengadam, Saroj Pradhan, Shaohua Hu, Tao Huai, Eon S Lee, Yifang Zhu
Particle emissions from heavy-duty vehicles (HDVs) have significant environmental and public health impacts. This study measured total particle number emission factors (PNEFs) from six newly-certified HDVs powered by diesel and compressed natural gas totaling over 6,800 miles of on-road operation in California. Distance-, fuel- and work-based PNEFs were calculated for each vehicle. Distance-based PNEFs of vehicles equipped with original equipment manufacturer (OEM) diesel particulate filters (DPFs) in this study have decreased by 355-3200 times compared to a previous retrofit DPF dynamometer study...
May 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28517036/prevalence-of-muscle-weakness-based-on-different-diagnostic-criteria-in-community-dwelling-older-adults-a-comparison-of-grip-strength-dynamometers
#2
Miji Kim, Shoji Shinkai
AIM: The present study compared the performance of the Jamar and Smedley dynamometers for the measurement of grip strength, and the two dynamometers were used to determine the prevalence rate of weakness in a large, community-dwelling, older adult population, based on different diagnostic criteria. METHODS: A total of 467 community-dwelling older adults aged 69-89 years were recruited into the study. Grip strength was measured with two dynamometers; the Jamar hydraulic hand dynamometer was used as the reference device...
May 18, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28515976/the-acute-effects-of-concentric-versus-eccentric-muscle-fatigue-on-shoulder-active-repositioning-sense
#3
Guido Spargoli
PURPOSE/BACKGROUND: Shoulder proprioception is essential in the activities of daily living as well as in sports. Acute muscle fatigue is believed to cause a deterioration of proprioception, increasing the risk of injury. The purpose of this study was to evaluate if fatigue of the shoulder external rotators during eccentric versus concentric activity affects shoulder joint proprioception as determined by active reproduction of position. STUDY DESIGN: Quasi-experimental trial...
April 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28513268/effects-of-volume-training-on-strength-and-endurance-of-back-muscles-a-randomized-controlled-trial
#4
Leonardo Shigaki, Cynthia Gobbi Alves Araújo, Mariane Guizeline Calderon, Thais Karoline Cezar Costa, Andreo Fernando Aguiar, Leonardo Oliveira Pena Costa, Rubens A da Silva
CONTEXT: Strength/resistance training volume has historically been supported in the American College of Sports Medicine recommendations. However, for the back muscles, exercise prescription related to the number of sets, such as single vs. multiple, is not well established in the literature. OBJECTIVE: The purpose of this study was to compare the effects of two training volumes on strength and endurance of back extensor muscles in untrained young participants, with regard to a repeated measures design...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28506016/comparison-of-the-strength-endurance-parameters-for-the-baltimore-therapeutic-equipment-bte-simulator-ii-and-the-jamar-handgrip-dynamometer
#5
Edwin Myers, Robert Trsicari
BACKGROUND: The purpose of this study was to provide evidence regarding the Baltimore Therapeutic Equipment (BTE) Work Simulator II's recommended grip endurance protocol. The grip endurance protocol of the BTE Simulator II has never been validated, though it has been used often for the rehabilitation of work-related injuries and other occupational dysfunctions. Without validation, the grip endurance protocol may or may not be providing skilled clinicians with appropriate evaluation results...
May 6, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28503454/quantitative-assessment-of-proprioception-using-dynamometer-in-incomplete-spinal-cord-injury-patients-a-preliminary-study
#6
Won Kee Chang, Yun Suk Jung, Mi-Kyoung Oh, Keewon Kim
OBJECTIVE: To investigate the feasibility of a knee proprioception evaluation using a dynamometer as a tool for evaluating proprioception of the lower extremities in patients with incomplete spinal cord injury (SCI), and to explore its usefulness in predicting the ambulatory outcome. METHODS: A total of 14 SCI patients (10 tetraplegic, 4 paraplegic; all AIS D) were included in this study. The passive repositioning error (PRE) and active repositioning error (ARE) were measured with a dynamometer, along with tibial somatosensory evoked potential (SSEP) and abductor hallucis motor-evoked potential (MEP)...
April 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28500910/ankle-strength-impairments-associated-with-knee-osteoarthritis
#7
Glaucia Helena Gonçalves, Francisco Alburquerque Sendín, Paula Regina Mendes da Silva Serrão, Luiz Fernando Approbato Selistre, Marina Petrella, Cristiano Carvalho, Stela Márcia Mattiello
BACKGROUND: Knee Osteoarthritis seems to negatively impact ankle biomechanics. However, the effect of knee osteoarthritis on ankle muscle strength has not been clearly established. This study aimed to evaluate the ankle strength of the plantar flexors and dorsiflexors of patients with knee osteoarthritis in different degrees of severity. METHODS: Thirty-seven patients with knee osteoarthritis and 15 controls, subjected to clinical and radiographic analysis, were divided into three groups: control, mild, and moderate knee osteoarthritis...
May 4, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28499192/handgrip-strength-is-associated-with-anthropometrics-variables-and-sex-in-preschool-children-a-cross-sectional-study-providing-reference-values
#8
Pedro Ángel Latorre Román, David Mora López, Beatriz Berrios Aguayo, Alejandro Robles Fuentes, Felipe García-Pinillos, Melchor Martínez Redondo
OBJECTIVE: The purpose of this study was to examine the influence of age, sex and anthropometric variables in handgrip strength and to determine norm-referenced values for preschool children. DESIGN: Cross-sectional study. SETTING: Schools. PARTICIPANTS: A total of 1215 children, aged 3-6 years (590 girls and 625 boys). INTERVENTION: Not applicable. MAIN OUTCOME MEASURES: Handgrip strength (HS), measured by the CAMRY hydraulic hand dynamometer (EH101; Camry, Guangdong Province, China)...
April 5, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28490427/effect-of-acute-intraocular-pressure-elevation-on-the-minimum-rim-width-in-normal-ocular-hypertensive-and-glaucoma-eyes
#9
Sourabh Sharma, Tin A Tun, Mani Baskaran, Eray Atalay, Sri Gowtham Thakku, Zhang Liang, Dan Milea, Nicholas G Strouthidis, Tin Aung, Michael Ja Girard
BACKGROUND: To estimate and compare changes in the Bruch's membrane opening-minimum rim width (BMO-MRW) and area in normal, ocular hypertensive and glaucoma eyes following acute elevations in intraocular pressure (IOP). METHODS: The optic nerve heads (ONHs) of 104 subjects (31 normals, 20 ocular hypertension (OHT) and 53 with primary glaucoma) were imaged using Spectral-domain optical coherence tomography (OCT; Spectralis, Heidelberg Engineering, Germany). IOP was raised twice by applying a force (0...
May 10, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28490195/the-takei-handheld-dynamometer-an-effective-clinical-outcome-measure-tool-for-hand-and-wrist-function-in-boxing
#10
Ian Gatt, Sophie Smith-Moore, Charlie Steggles, Mike Loosemore
BACKGROUND: The aim of this article was to explore retrospectively the Takei dynamometer as a valid and reliable outcome measure tool for hand and wrist pathology in the Great Britain amateur boxing squad between 2010 and 2014. METHODS: Longitudinal retrospective injury surveillance of the Great Britain boxing squad was performed from 2010 to 2014. The location, region affected, description, and duration of each injury were recorded by the team doctor and team physiotherapists...
May 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28482740/effects-of-three-different-chair-based-exercise-programs-on-people-over-80-years-old
#11
José Cancela, Estrella Pallin, Ander Orbegozo, Carlos Ayán
This study aimed at comparing the effects of three chair-based exercise programs on people over 80 years. Thirty-six participants (87.91 ± 4.70 years) were randomly allocated to an elastic-band, pedal exerciser or range of motion exercise program. The participants exercised three days per week during three months. A hand-held dynamometer, the Tinetti Gait Balance, the Barthel Index and the Timed Up & Go tests (assessed by means of the Wiva® science sensor) were used to evaluate the effects of the programs on the participants strength, balance, functional independence and functional mobility, respectively...
May 8, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28475552/analysis-of-the-effect-size-of-overweight-in-muscular-strength-tests-among-adolescents-reference-values-according-to-sex-age-and-bmi
#12
Emilio J Martínez-López, Manuel De La Torre-Cruz, Sara Suarez-Manzano, Alberto Ruiz-Ariza
The aim of this paper is to quantify the effect size of overweight on the results of muscular strength tests in adolescents and to report percentile tables based on sex, age and BMI. The study hypothesized that the effect size obtained from the difference between normal-weight and overweight youth would be greater than the differences between sexes within the same age group. A total of 11044 Spanish adolescents (48.5% girls) aged 14.39 ± 1.21 years (range: 12-16 years) from 42 secondary schools participated in the research...
April 25, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28474785/protein-timing-during-the-day-and-its-relevance-for-muscle-strength-and-lean-mass
#13
Samuel L Buckner, Jeremy P Loenneke, Paul D Loprinzi
Protein consumption and its association with changes in body composition, muscle function and different strategies to optimize the muscle protein synthetic response have received considerable attention. However, we are not aware of any epidemiological study examining the time-of-day consumption (afternoon versus evening) of protein on strength and lean mass. The purpose was to examine the associations between afternoon and evening protein consumption, at different protein thresholds (i.e. 15, 20, 25 and 30 g), in relation to leg lean mass and knee extensor strength in men...
May 5, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28474432/associations-of-muscle-force-power-cross-sectional-muscle-area-and-bone-geometry-in-older-uk-men
#14
Ayse Zengin, Stephen R Pye, Michael J Cook, Judith E Adams, Rainer Rawer, Frederick C W Wu, Terence W O'Neill, Kate A Ward
BACKGROUND: Ageing is associated with sarcopenia, osteoporosis, and increased fall risk, all of which contribute to increased fracture risk. Mechanically, bone strength adapts in response to forces created by muscle contractions. Adaptations can be through changes in bone size, geometry, and bending strength. Muscle mass is often used as a surrogate for muscle force; however, force can be increased without changes in muscle mass. Increased fall risk with ageing has been associated with a decline in muscle power-which is a measure of mobility...
May 4, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28469748/plasma-actin-gelsolin-and-orosomucoid-levels-after-eccentric-exercise
#15
Éva Tékus, Márk Váczi, Zoltán Horváth-Szalai, Andrea Ludány, Tamás Kőszegi, Márta Wilhelm
The present study investigated the acute effect of eccentric exercise on blood plasma actin, gelsolin (GSN) and orosomucoid (AGP) levels in untrained and moderately trained individuals, and their correlation with exercise induced muscle damage (EIMD) markers (CK, intensity of muscle soreness and maximal voluntary contraction torque deficit). Healthy physical education students (6 untrained, 12 moderately trained) participated in this research. Actin, GSN, AGP and CK levels were measured in blood plasma at baseline, immediately, 1 h, 6 h and 24 h post-exercise comprising 90 eccentric quadriceps contractions performed on a dynamometer...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28465129/reference-values-of-grip-strength-prevalence-of-low-grip-strength-and-factors-affecting-grip-strength-values-in-chinese-adults
#16
Ruby Yu, Sherlin Ong, Osbert Cheung, Jason Leung, Jean Woo
OBJECTIVES: The objectives of this study were to update the reference values of grip strength, to estimate the prevalence of low grip strength, and to examine the impact of different aspects of measurement protocol on grip strength values in Chinese adults. DESIGN, SETTING, AND PARTICIPANTS: A cross-sectional survey of Chinese men (n = 714) and women (n = 4014) aged 18-102 years was undertaken in different community settings in Hong Kong. MEASUREMENTS: Grip strength was measured with a digital dynamometer (TKK 5401 Grip-D; Takei, Niigata, Japan)...
April 29, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28459088/experimental-data-of-lithium-ion-battery-and-ultracapacitor-under-dst-and-udds-profiles-at-room-temperature
#17
Yujie Wang, Chang Liu, Rui Pan, Zonghai Chen
This article provides the dataset of both the LiFePO4 type lithium-ion battery (LIB) behavior and the Maxwell ultracapacitor behavior. The dynamic stress test (DST) condition and the urban dynamometer driving schedule (UDDS) condition were carried out to analyze the battery/ultracapacitor features. The datasets were achieved at room temperature, in August, 2016. The shared data contributes to clarify the behavior of the LIBs and ultracapacitors and can be used to predict the state-of-charge (SOC) of the LIBs and ultracapacitors, which is also shown in the article of "Modeling and state-of-charge prediction of lithium-ion battery and ultracapacitor hybrids with a co-estimator" (United States Advanced Battery Consortium, 1996) [1]...
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28453449/effect-of-upright-and-slouch-sitting-postures-and-voluntary-teeth-clenching-on-hand-grip-strength-in-young-male-adults
#18
Ahmad Alghadir, Hamayun Zafar, Zaheen A Iqbal
BACKGROUND: Estimation of handgrip strength (HGS) is routinely used by clinicians and epidemiologists for objective assessment of functional status of hand and upper extremity. It is also used as an indirect indicator of overall physical strength and health status in variety of clinical situations and chronic general medical conditions. OBJECTIVE: The present study was conducted to examine the effects of upright and slouch sitting postures and voluntary teeth clenching on hand grip strength in healthy young male subjects...
April 21, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28452832/shoulder-dynamic-control-ratio-and-rotation-range-of-motion-in-female-junior-elite-handball-players-and-controls
#19
Robert van Cingel, Bas Habets, Linn Willemsen, Bart Staal
OBJECTIVE: To compare glenohumeral range of motion and shoulder rotator muscle strength in healthy female junior elite handball players and controls. DESIGN: Cross-sectional case-control study. SETTING: Sports medical center. PARTICIPANTS: Forty elite female handball players and 30 controls active in nonoverhead sports participated in this study. MAIN OUTCOME MEASURES: Passive external rotator (ER), internal rotator (IR), and total range of motion (TROM) of the dominant and nondominant arm were examined with a goniometer...
April 27, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28450961/evaluation-of-hip-abductor-and-adductor-strength-in-the-elderly-a-reliability-study
#20
Simone Gafner, Caroline H G Bastiaenen, Philippe Terrier, Ilona Punt, Serge Ferrari, Gabriel Gold, Rob de Bie, Lara Allet
BACKGROUND: In elderly individuals an increased muscle strength contributes to the diminution of the falls risk and associated adverse events. An increasing interest in lateral control exists due to the fatal consequences of postero-lateral falls. Therefore a proper assessment of frontal plane hip muscle strength in elderly is important but remains challenging. Therefore we aimed to investigate the feasibility and repeatability of a hip abductor and adductor maximum voluntary isometric strength (MVIS) and rate of force generation (RFG) test in elderly...
2017: European Review of Aging and Physical Activity
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