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rate of force development training

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https://www.readbyqxmd.com/read/28223945/toward-respiratory-assessment-using-depth-measurements-from-a-time-of-flight-sensor
#1
Charles Sharp, Vahid Soleimani, Sion Hannuna, Massimo Camplani, Dima Damen, Jason Viner, Majid Mirmehdi, James W Dodd
Introduction: There is increasing interest in technologies that may enable remote monitoring of respiratory disease. Traditional methods for assessing respiratory function such as spirometry can be expensive and require specialist training to perform and interpret. Remote, non-contact tracking of chest wall movement has been explored in the past using structured light, accelerometers and impedance pneumography, but these have often been costly and clinical utility remains to be defined. We present data from a 3-Dimensional time-of-flight camera (found in gaming consoles) used to estimate chest volume during routine spirometry maneuvres...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28212963/clinician-reported-outcome-assessments-of-treatment-benefit-report-of-the-ispor-clinical-outcome-assessment-emerging-good-practices-task-force
#2
John H Powers, Donald L Patrick, Marc K Walton, Patrick Marquis, Stefan Cano, Jeremy Hobart, Maria Isaac, Spiros Vamvakas, Ashley Slagle, Elizabeth Molsen, Laurie B Burke
A clinician-reported outcome (ClinRO) assessment is a type of clinical outcome assessment (COA). ClinRO assessments, like all COAs (patient-reported, observer-reported, or performance outcome assessments), are used to 1) measure patients' health status and 2) define end points that can be interpreted as treatment benefits of medical interventions on how patients feel, function, or survive in clinical trials. Like other COAs, ClinRO assessments can be influenced by human choices, judgment, or motivation. A ClinRO assessment is conducted and reported by a trained health care professional and requires specialized professional training to evaluate the patient's health status...
January 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28209802/doublet-stimulation-increases-ca-2-binding-to-troponin-c-to-ensure-rapid-force-development-in-skeletal-muscle
#3
Anthony J Bakker, Tanya R Cully, Catherine D Wingate, Christopher J Barclay, Bradley S Launikonis
Fast-twitch skeletal muscle fibers are often exposed to motor neuron double discharges (≥200 Hz), which markedly increase both the rate of contraction and the magnitude of the resulting force responses. However, the mechanism responsible for these effects is poorly understood, likely because of technical limitations in previous studies. In this study, we measured cytosolic Ca(2+) during doublet activation using the low-affinity indicator Mag-Fluo-4 at high temporal resolution and modeled the effects of doublet stimulation on sarcoplasmic reticulum (SR) Ca(2+) release, binding of Ca(2+) to cytosolic buffers, and force enhancement in fast-twitch fibers...
February 16, 2017: Journal of General Physiology
https://www.readbyqxmd.com/read/28194084/civil-construction-work-the-unseen-contributor-to-the-occupational-and-global-disease-burden
#4
R Sitalakshmi, P Saikumar, P Jeyachandran, Manoharan, Thangavel, Jayakar Thomas
BACKGROUND: Construction industry is the second largest employment giving industry in India with many semi-skilled or unskilled workers taking up the occupation for livelihood without any training and proper guidance. AIM: To evaluate the pathogenic association of cement exposure to occupational contact dermatoses as evidenced by immune markers and to correlate their pulmonary functions with years of exposure to cement. SETTING AND DESIGN: This was a cross-sectional study conducted among randomly selected cement workers...
May 2016: Indian Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28188061/evidence-based-guides-in-tracheostomy-use-in-critical-patients
#5
N Raimondi, M R Vial, J Calleja, A Quintero, A Cortés Alban, E Celis, C Pacheco, S Ugarte, J M Añón, G Hernández, E Vidal, G Chiappero, F Ríos, F Castilleja, A Matos, E Rodriguez, P Antoniazzi, J M Teles, C Dueñas, J Sinclair, L Martínez, I Von der Osten, J Vergara, E Jiménez, M Arroyo, C Rodriguez, J Torres, S Fernandez-Bussy, J L Nates
OBJECTIVES: Provide evidence based guidelines for tracheostomy in critically ill adult patients and identify areas needing further research. METHODS: A task force composed of representatives of 10 member countries of the Pan-American and Iberic Federation of Societies of Critical and Intensive Therapy Medicine and of the Latin American Critical Care Trial Investigators Network developed recommendations based on the Grading of Recommendations Assessment, Development and Evaluation system...
February 7, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/28151781/acute-effects-of-eccentric-overload-on-concentric-front-squat-performance
#6
Cameron N Munger, David C Archer, Whitney D Leyva, Megan A Wong, Jared W Coburn, Pablo B Costa, Lee E Brown
Eccentric overload is used to enhance performance. The purpose of this study was to investigate the acute effects of eccentric overload on concentric front squat performance. Twenty resistance-trained males (age=23.80±1.82yrs, ht=176.95±5.21cm, mass=83.49±10.43kg, 1 Repetition Maximum [1RM] front squat=131.02±21.32kg) volunteered. A dynamic warm-up and warm-up sets of front squat were performed. Eccentric hooks were added to the barbell. They descended for 3 seconds, until eccentric hooks released, and performed the concentric phase as fast as possible...
January 30, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28149424/effect-of-8-weeks-of-free-weight-and-machine-based-strength-training-on-strength-and-power-performance
#7
Klaus Wirth, Michael Keiner, Hagen Hartmann, Andre Sander, Christoph Mickel
The aim of this study was to evaluate the effectiveness of free-weight and machine-based exercises to increase different strength and speed-strength variables. One hundred twenty male participants (age: 23.8 ± 2.5 years; body height: 181.0 ± 6.8 cm; body mass: 80.2 ± 8.9 kg) joined the study. The 2 experimental groups completed an 8 week periodized strength training program that included 2 training sessions per week. The exercises that were used in the strength training programs were the parallel barbell squat and the leg press...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28149372/intramuscular-fiber-conduction-velocity-isometric-force-and-explosive-performance
#8
Spyridon Methenitis, Gerasimos Terzis, Nikolaos Zaras, Angeliki-Nikoletta Stasinaki, Nikolaos Karandreas
Conduction of electrical signals along the surface of muscle fibers is acknowledged as an essential neuromuscular component which is linked with muscle force production. However, it remains unclear whether muscle fiber conduction velocity (MFCV) is also linked with explosive performance. The aim of the present study was to investigate the relationship between vastus lateralis MFCV and countermovement jumping performance, the rate of force development and maximum isometric force. Fifteen moderately-trained young females performed countermovement jumps as well as an isometric leg press test in order to determine the rate of force development and maximum isometric force...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28145919/chronic-effects-of-different-rest-intervals-between-sets-on-dynamic-and-isometric-muscle-strength-and-muscle-activity-in-trained-older-women
#9
José Claudio Jambassi Filho, André Luiz Demantova Gurjão, Marilia Ceccato, Alexandre Konig Garcia Prado, Luiza Herminia Gallo, Sebastião Gobbi
OBJECTIVE: This study investigated the chronic effects of different rest intervals (RIs) between sets on dynamic and isometric muscle strength and muscle activity. DESIGN: We used a repeated-measures design (pretraining and posttraining) with independent groups (different RI). Twenty-one resistance-trained older women (66.4 ± 4.4 years) were randomly assigned to either a 1-minute RI group (G-1 min; n = 10) or 3-minute RI group (G-3 min; n = 11). Both groups completed 3 supervised sessions per week during 8 weeks...
January 31, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28121802/delayed-effect-of-blood-flow-restricted-resistance-training-on-rapid-force-capacity
#10
Jakob Lindberg Nielsen, Ulrik Frandsen, Tatyana Prokhorova, Rune Dueholm Bech, Tobias Nygaard, Charlotte Suetta, Per Aagaard
PURPOSE: The aim of the present study was to investigate the effect and time course of high-frequent low-load resistance training with blood-flow restriction (BFR) on rapid force capacity (i.e. rate of torque development (RTD)). METHODS: Ten male subjects (22.8±2.3 years) performed four sets of knee extensor exercise (20%1RM) to concentric failure during concurrent BFR of the thigh (100mmHg), while eight work-matched controls (21.9±3.0 years) trained without BFR (CON)...
January 23, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28121227/reliability-of-a-new-medicine-ball-throw-power-test
#11
Mark G L Sayers, Stephen Bishop
The purpose of this study was to examine the reliability of a new upper body medicine ball push-press (MBP-P) test. Twenty-three strength trained volunteers performed a series of supine MBP-P throws using loads representing 5% and10% of their 5RM bench press (5 repetitions at each load). Throws were performed on a force platform (2000 Hz), with medicine ball kinematic data collected using a high-speed motion capture (500 Hz). Testing was repeated after 7-10 days to quantify inter-test reliability. Maximal force (Fmax), impulse at Fmax, time to Fmax, maximum rate of force development (RFDmax) were all calculated from the force platform outputs, with maximum ball velocity (Velmax) and maximum ball acceleration (Accelmax) developed from the kinematic data...
January 25, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28108648/reduced-firing-rates-of-high-threshold-motor-units-in-response-to-eccentric-overload
#12
Tom G Balshaw, Madhu Pahar, Ross Chesham, Lewis J Macgregor, Angus M Hunter
Acute responses of motor units were investigated during submaximal voluntary isometric tasks following eccentric overload (EO) and constant load (CL) knee extension resistance exercise. Ten healthy resistance-trained participants performed four experimental test sessions separated by 5 days over a 20 day period. Two sessions involved constant load and the other two used eccentric overload. EO and CL used both sessions for different target knee eccentric extension phases; one at 2 sec and the other at 4 sec...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28098712/business-education-for-plastic-surgeons-a-systematic-review-development-and-implementation-of-a-business-principles-curriculum-in-a-residency-program
#13
Bahar Zarrabi, Karen K Burce, Stella M Seal, Scott D Lifchez, Richard J Redett, Kevin Frick, Amir H Dorafshar, Carisa M Cooney
BACKGROUND: Rising healthcare costs, decreasing reimbursement rates, and changes in American healthcare are forcing physicians to become increasingly business-minded. Both academic and private plastic surgeons can benefit from being educated in business principles. We conducted a systematic review to identify existing business curricula and integrated a business principles curriculum into residency training. METHODS: We anonymously surveyed our department regarding perceived importance of business principles and performed a systematic literature review from 1993-2013 using PubMed and Embase to identify residency training programs that had designed/implemented business curricula...
January 13, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28066693/society-of-pediatric-psychology-workforce-survey-development-of-survey-methods-sample-characteristics-and-lessons-learned
#14
Tim Wysocki, Cheryl L Brosig, Marisa E Hilliard
There are few detailed workforce studies of specialty fields within professional psychology, and none have been reported for pediatric psychology since 2006. Availability of such data could facilitate more-informed decision making by students and trainees, psychologists pursuing employment opportunities, and psychologists involved in employment or compensation negotiations. This article describes the work of a task force of the American Psychological Association (APA) Division 54 (Society of Pediatric Psychology) in the design, construction, pretesting, distribution, and data management for the Society of Pediatric Psychology (SPP) Workforce Survey...
March 2016: Clinical Practice in Pediatric Psychology
https://www.readbyqxmd.com/read/28027011/smokeless-tobacco-use-among-united-states-air-force-trainees
#15
Brittany D Linde, Jon O Ebbert, Darrell R Schroeder, Andy C Hanson, G Wayne Talcott, Robert C Klesges
BACKGROUND: The prevalence of smokeless tobacco use in the United States Air Force (USAF) exceeds civilian use rates. We assessed the prevalence of smokeless tobacco use and evaluated the correlates of smokeless tobacco use in a sample of United States Air Force trainees. METHODS: We conducted a cross-sectional survey of USAF Technical Training school personnel at Joint Base San Antonio-Lackland and Fort Sam Houston (N = 14,810). Survey completion rate was 78%. Logistic regression was used to analyze the associations between demographic variables, tobacco use, and social factors for both regular and infrequent smokeless tobacco (e...
December 27, 2016: Substance Abuse
https://www.readbyqxmd.com/read/27995185/the-efficacy-of-training-insertion-skill-on-a-physical-model-colonoscopy-simulator
#16
Annaliese M Plooy, Andrew Hill, Mark S Horswill, Alanna St G Cresp, Rozemary Karamatic, Stephan Riek, Guy M Wallis, Robin Burgess-Limerick, David G Hewett, Marcus O Watson
Background and study aims: Prior research supports the validity of performance measures derived from the use of a physical model colonoscopy simulator - the Kyoto Kagaku Colonoscope Training Model (Kyoto Kagaku Co. Ltd., Kyoto, Japan) - for assessing insertion skill. However, its use as a training tool has received little research attention. We assessed the efficacy of a brief structured program to develop basic colonoscope insertion skill through unsupervised practice on the model. Participants and methods: This was a training study with pretesting and post-testing...
December 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27977585/neurocognitive-performance-and-physical-function-do-not-change-with-physical-cognitive-mindfulness-training-in-female-laboratory-technicians-with-chronic-musculoskeletal-pain-randomized-controlled-trial
#17
RANDOMIZED CONTROLLED TRIAL
Kenneth Jay, Mikkel Brandt, Mc Schraefel, Markus Due Jakobsen, Emil Sundstrup, Gisela Sjøgaard, Jonas Vinstrup, Lars L Andersen
BACKGROUND: Cognitive and physical performance can be negatively affected by chronic pain. This study evaluates the effect of combined physical-, cognitive-, and mindfulness training (PCMT) on cognitive and physical performance. METHODS: From a large pharmaceutical company in Denmark we randomly allocated 112 female laboratory technicians with chronic upper limb pain to group-based PCMT at the worksite or a reference group for 10 weeks. Neurocognitive performance was measured by the computerized central nervous system vital signs neurocognitive assessment battery...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27941491/low-intensity-sprint-training-with-blood-flow-restriction-improves-100-m-dash
#18
M Behringer, D Behlau, J Montag, M McCourt, J Mester
PURPOSE: We investigated the effects of practical blood flow restriction (pBFR) of leg muscles during sprint training on the 100 m dash time in well-trained sport students. METHODS: Participants performed 6x100 m sprints at 60-70% of their maximal 100 m sprinting speed twice a week for 6 weeks, either with (IG; n=12) or without pBFR (CG; n=12). RESULTS: The 100 m dash time significantly decreased more in the IG (-0.38±0.24 s) than in the CG (-0...
November 25, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27920732/the-ipad-as-a-research-tool-for-the-understanding-of-english-plurals-by-english-chinese-and-other-l1-speaking-3-and-4-year-olds
#19
Nan Xu Rattanasone, Benjamin Davies, Tamara Schembri, Fabia Andronos, Katherine Demuth
Learning about what young children with limited spoken language know about the grammar of their language is extremely challenging. Researchers have traditionally used looking behavior as a measure of language processing and to infer what overt choices children might make. However, these methods are expensive to setup, require specialized training, are time intensive for data analysis and can have considerable dropout rates. For these reasons, we have developed a forced choice task delivered on an iPad based on our eye-tracking studies with English monolinguals (Davies et al...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27857960/heat-strain-during-military-training-activities-the-dilemma-of-balancing-force-protection-and-operational-capability
#20
Andrew P Hunt, Daniel C Billing, Mark J Patterson, Joanne N Caldwell
Military activities in hot environments pose 2 competing demands: the requirement to perform realistic training to develop operational capability with the necessity to protect armed forces personnel against heat-related illness. To ascertain whether work duration limits for protection against heat-related illness restrict military activities, this study examined the heat strain and risks of heat-related illness when conducting a military activity above the prescribed work duration limits. Thirty-seven soldiers conducted a march (10 km; ∼5...
April 2016: Temperature: Multidisciplinary Biomedical Journal
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