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Deceleration

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Most cited protocols related to «Deceleration»

1
Measuring Physical Activity with Actigraph
Physical activity was monitored at the OAI 48-month follow-up visit using a GT1M Actigraph accelerometer (Actigraph; Pensacola, FL). The accuracy (walking speed17 (link)) and test-retest reliability18 (link) of Actigraph accelerometers under field conditions have been established in many populations including persons with OA19 (link). The GT1M Actigraph is a small uniaxial accelerometer that measures vertical acceleration and deceleration 20 (link). Accelerometer output is an activity count, which is the weighted sum of the number of accelerations measured over a time period (e.g. in this case 1 minute), where the weights are proportional to the magnitude of measured acceleration.
Accelerometer recordings were translated on a minute by minute basis into physical activity intensity categories (light, moderate, vigorous) from activity counts. The influence of different thresholds to assess physical activity intensity has been previously examined21 (link)–23 (link). For the purposes of standardization we apply intensity thresholds used by the NCI 13 (link): light (1–2019 counts), moderate (2020–5998 counts), vigorous (5999 counts or greater).
Uniform scripted instructions were given on the wear and positioning of the accelerometer. Participants were instructed to wear the accelerometer upon arising in the morning and continuously until going to bed at night for seven consecutive days. The unit was worn on a belt at the natural waistline on the right hip in line with the right axilla. Participants maintained a daily log to record the dates of accelerometer monitoring. Skipped days reported on the log were excluded from the analysis.
Song J., Semanik P., Sharma L., Chang R.W., Hochberg M.C., Mysiw W.J., Bathon J.M., Eaton C.B., Jackson R., Kwoh C.K., Nevitt M, & Dunlop D.D. (2010). Assessing Physical Activity in Persons with Knee Osteoarthritis Using Accelerometers: Data in the Osteoarthritis Initiative. Arthritis care & research, 62(12), 1724-1732.
Publication 2010
Acceleration Actigraphy Axilla Deceleration Light Population Group
2
Platelet Activation by Dynamic Shear Stress

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Publication 2010
Adult Aluminum Biological Assay BLOOD Blood Platelet Disorders Blood Platelets Calculi Deceleration Dextran Donors Electricity Ethics Committees, Research Gel Chromatography Hemodynamics Human Volunteers Medical Devices physiology Platelet-Rich Plasma Platelet Activation Sepharose Systole Thromboplastin Torque Viscosity Voluntary Workers
3
Automated Gait Analysis Using GaitMat II

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Publication 2008
Acceleration Deceleration Foot Gait Analysis Heel Neoplasm Metastasis Pressure
4
Gait Speed and Physical Performance Assessment
Speed (cm/s) during normal pace walking and WWT was measured using a computerized walkway with embedded pressure sensors (GAITRite, CIR systems, Havertown, PA) in a quiet well-lit room. Participants wore comfortable footwear and did not have any attached monitors.14 (link) Participants walked for two trials each for normal pace and WWT conditions on a walkway with 15 feet (457.2 cm) recording surface till July 2008. Following which, assessments were done for one trial on a walkway with 20 feet (609.6 cm) recording surface. For WWT, participants started walking when asked by the assistant while reciting alternate letters of the alphabet (e.g.; a, c, e.) paying equal attention to their walking and talking to avoid task prioritization. 15 (link) The order of the initial letters on WWT was randomly varied between ‘A’ and ‘B’ to minimize practice effects.16 (link) Start and stop points were marked by white lines on the floor, and included three feet (four feet for longer walkway) from the edge of the recording surface to account for initial acceleration and terminal deceleration. The GAITRite system has excellent validity and test-retest reliability.10 (link), 14 (link) The correlation for gait speed measured on the two walkways in 20 participants was excellent (Pearson r = 0.94). Reliability between two consecutive walking trials was excellent (r = 0.96). Mean WWT time over 20 feet was 13.01 ± 8.11 seconds.
The SPPB includes tests of balance, gait speed, and chair rise.17 (link) A categorical score in each of the three areas (0–4) and a summary score is determined (0–12, higher better). The SPPB can be completed in five minutes.
Verghese J., Holtzer R., Lipton R.B, & Wang C. (2012). Mobility Stress Test Approach to Predicting Frailty, Disability, and Mortality In High Functioning Older Adults. Journal of the American Geriatrics Society, 60(10), 1901-1905.
Publication 2012
Acceleration Attention Deceleration Foot Neoplasm Metastasis Pressure
5
Validating Accelerometer-Based Physical Activity Assessment
Accelerometer-based estimates of PA were obtained using the Actigraph MTI (Manufacturing Technologies, Inc., Model 7164, Shalimar, FL). This uniaxial electromechanical accelerometer is designed to record vertical plane acceleration and deceleration at a frequency of 10 × s−1, and at a threshold of 0.033 × g. Additional specifications for this device are published elsewhere (24 ). A number of studies have demonstrated its durability, reliability, and validity in adults against criterion methods such as heart rate monitoring and indirect calorimetry (25 (link)-29 (link)). The accelerometers were attached to a belt worn around the waist with accelerometer placement on the right hip. The manufacturer recommended accelerometer placement on the hip because this site permits measurement of whole body movement, does not interfere with daily activities, and is the most frequently used site in epidemiological studies.
For each assessment, the MTI Actigraph was initialized and set to record data in 60-second epochs prior to placement on the subject. Subjects were instructed to wear the accelerometer for seven contiguous days during all waking hours, except during water activities. The following measures were obtained: number of days measured, registered time (hr/day), and average duration (min/day) spent in all health-enhancing PA intensities including MPA (3-6 METs), VPA (> 6 METs), and combined MVPA (≥ 3 METs). Validation studies demonstrating the accuracy and precision of the MTI Actigraph model 7164 against portable indirect calorimetry systems in adults (25 (link)-29 (link)) have reported different cutoff points due to the wide range of activity types and intensities used in the calibration studies. Guided by a recent review of calibration studies of accelerometer output for adults (30 ), we minimized sampling error by averaging the cutoff points reported by laboratory- and field-based calibration studies using the MTI Actigraph model 7164 (25 (link)-29 (link)) and applied the resulting cutoff points to discriminate between PA intensities. Moderate (3-6 METs) and vigorous (>6 METs) PA intensity cutoffs from these studies ranged from 1,809-2,430 and 5,725-6,403 counts per minute, respectively. The applied cutoff points for light, moderate, and vigorous PA intensities were accelerometer recordings of 100 to 2,224, 2,225 to 5,950, and > 5,950 counts per minute, respectively.
Leisure time PA and exercise habits within the previous three months were assessed using the Aerobics Center Longitudinal Study Physical Activity Questionnaire (ACLS), which has been described elsewhere (31 ). The ACLS elicits self-reports of the frequency (sessions/week) and duration (minutes/session) of activities such as walking, running, treadmill, cycling, swimming, aerobics, yoga, weight lifting, and other sports (e.g. golf, tennis, soccer). Descriptions of activities are provided in Table 2.
Farr J.N., Going S.B., Lohman T.G., Rankin L., Kasle S., Cornett M, & Cussler E. (2008). Physical Activity Levels in Early Knee Osteoarthritis Patients Measured by Accelerometry. Arthritis and rheumatism, 59(9), 1229-1236.
Publication 2008
Acceleration Actigraphy Adult Calorimetry, Indirect Deceleration EPOCH protocol Exercise, Aerobic Light Measure, Body Medical Devices Movement Yoga

Most recents protocols related to «Deceleration»

1
Platform Motion Misalignment Detection
Not available on PMC !

Example 3

In another example, the misalignment between a device and a platform may be determined from acceleration and/or deceleration of the platform, utilizing motion sensor data in the presence or in the absence of absolute navigational information updates. Details regarding suitable techniques may be found in commonly-owned U.S. Pat. No. 9,797,727, issued Oct. 24, 2017, which is hereby incorporated by reference in its entirety.

US11875519B2. Method and system for positioning using optical sensor and motion sensors (2024-01-16). None [CA], None [CA], None [CA], None [CA], None [CA], None [CA], None [CA], None [CA]. Inventors: Medhat Omr [CA], Abdelrahman Ali [CA], Amr Al-Hamad [CA], Jacques Georgy [CA], Billy Cheuk Wai Chan [CA], Dylan Krupity [CA], Qingli Wang [CA], Christopher Goodall [CA].
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Patent 2024
Acceleration Deceleration Medical Devices
2
Survivorship and Mortality Rates of Adult Yellow Mud Turtles
Survivorship and age-specific mortality rates of adult Kinosternon flavescens from western Nebraska were estimated based on the Gompertz model (Table 1) [18 (link), 90 (link), 91 (link)] which estimates an initial mortality probability at starting age, and the rate of accelerating mortality across the lifespan. More complicated models (e.g., including a constant Makeham term for age-independent mortality, including a deceleration parameter) were not supported by these data based on the change in AIC (computed in the BaSTA R package [90 (link)]). Gompertz modeling was applied to our long-term mark-recapture data set from Gimlet Lake, including data from 1530 individual females and 860 individual males. Age at maturity averaged 11 years for both sexes, which is known from the long-term monitoring of age and reproduction in this population [88 , 92 , 93 ]. Because maturation is size-dependent, these estimates of maturation age (i.e., 11 yr.) are maximum estimates (for example, an occasional male turtle can be identified at younger ages). We tested the sensitivity of using an average maturation age of 10 years with no appreciable effect on estimates of lifespan and mortality ageing (data not shown). Maximum and median adult lifespan were calculated as the number of years after the age of first reproduction until 95 and 50% of the adults in the synthetic cohort were estimated to have died. Datasets were analyzed using the ‘basta’ function from the BaSTA package for R [90 (link)].
Bronikowski A.M., Hedrick A.R., Kutz G.A., Holden K.G., Reinke B, & Iverson J.B. (2023). Sex-specific innate immunity and ageing in long-lived fresh water turtles (Kinosternon flavescens: Kinosternidae). Immunity & Ageing : I & A, 20, 11.
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Publication 2023
Adult Basta Deceleration Females Hypersensitivity Males Reproduction Turtle Youth
3
Iodixanol Gradient Fractionation of EVs
Iodixanol gradients (Optiprep, Sigma-Aldrich D1556) were made by layering 2.5 ml each of 18, 14, 10, 6% iodixanol (from 60% iodixanol at 1.320 ± 0.001 g/ml) diluted in PBS. extracellular vesicle enriched fractions in 1.6 ml PBS were loaded onto the gradient. After ultracentrifugation at 200 000 × g (60 min, 4°C, TH-641 rotor, 13.2 ml thinwall polypropylene tubes, acceleration/deceleration 9), 12 fractions (0.96 ml/each) were collected from the top. Fraction densities were measured by absorbance at 340 nm. Fractions were diluted in 5 ml PBS and washed by ultracentrifugation at 200 000 × g (60 min, 4°C, AH-650 rotor, 5 ml Beckman Ultra-Clear tubes, acceleration/deceleration 9). Pellets were pipetted up and down 10 times and vortexed for 5 s in 120 μl PBS. Tubes were placed on ice (20 min) followed by another round of pipetting/vortexing as above. Resuspensions were stored at –80°C.
Huang Y., Liao Z., Dang P., Queen S., Abreu C.M., Gololobova O., Zheng L, & Witwer K.W. (2023). Longitudinal characterization of circulating extracellular vesicles and small RNA during simian immunodeficiency virus infection and antiretroviral therapy. AIDS (London, England), 37(5), 733-744.
Publication 2023
Acceleration Deceleration Extracellular Vesicles iodixanol iodixanol-320 Pellets, Drug Polypropylenes Ultracentrifugation
4
Linear Sprint and 505 COD Assessment
Linear sprints and 505 change of direction (COD) tests were complete using single-beam light gates (Smartspeed, USA) on an indoor 3G pitch. Tests were initiated with a falling start, whereby the player starts 0.5 m before the first gate, with the feet in line. In both linear and COD assessments, players were informed to run beyond the final gate to prevent early deceleration. In the COD, light gates were placed at 10 m, with test markings produced at 15 m for players to change direction on. The assessed foot was required to be placed beyond the 15 m marking before returning through the light gate. Three trials were used for the linear sprints, and two trials per turning leg in the 505, using the best trials for further analysis..
Jumping tasks were performed using two force plates (Pasco, USA) set to 1000 Hz, and a compatible analysis software package (Capstone, USA). For both the countermovement- and squat jumps (CMJ and SQJ), players placed one foot on each force plate and were asked to remain stationary to capture bodyweight. In both jumps, players used a self-prescribed jump depth with the arms on the hips until the completion of each jump and were asked to jump ‘as high as you can’. During the SQJ, players were asked to hold the dipped position for at least 2 s before initiating the jump. Players were required to land back on the plates, whilst absorbing the landing forces. Three trials of each jump were collected, with the best trial being used for further analysis.
Whilst this research undertakes an ethnographic approach, previous research has reported good test retest reliability (10 m, ICC = 0.91, CV = 2.3%; 20 m, ICC = 0.91, CV = 2.9%; 30 m, ICC = 0.99, CV = 0.9%) in linear sprints [40 ], likewise good test–retest reliability (ICC > 0.899) [3 (link)] and validity (ICC = 0.77, CV = 2.80%) [43 (link)] in the 505 agility test. Furthermore, to determine the reliability of the data, the coefficient of variation (CV) was calculated for each objective variable. Participants who demonstrated CV > 10% were deemed poor for reliability and, therefore, excluded from further analysis within each variable [6 (link), 18 (link)].
Kite R.J., Noon M.R., Morris R., Mundy P, & Clarke N.D. (2023). Observations of Player (de)Selection Within a Professional UK Soccer Academy. Journal of Science in Sport and Exercise.
Publication 2023
Arm, Upper Body Weight Coxa Deceleration Foot Light
5
Simultaneous Gait Assessment using Dual GAITRite Walkways
The two versions of the GAITRite® walkways were superimposed (see Fig. 1 to view experimental design). The GAITRite® CIRFACE was placed directly on the ground. The active capture zone of walk was 576 cm long. In order to secure the participant and to limit the effects of acceleration and deceleration at the beginning and at the end of the walk, an additional plate of the GAITRite® CIRFACE, without sensor, was placed before (55 cm long) and after (85 cm long) the GAITRite® CIRFACE active capture zone. The GAITRite® PPC was placed on the CIRFACE, starting at the same level as the GAITRite® CIRFACE’s non-active capture zone, and finishing at 253 cm beyond the active capture zone. Both GAITRite® systems were initialized before the patient started to walk. Thereby, patient’s walk was recorded by both walkways at the same time. Before starting to walk, the patient was sited in front of the walkway to prevent pre-fatigue. Then, the professional caregiver (nurse and/or medical student) asked him to stand up and to stand on the first plate without sensor. Then, he instructed him to walk on the walkway at his usual, comfortable speed (including cane or rollator if necessary) to the mark (which corresponded to the last plate without sensor of the GAITRite® CIRFACE). One trial was recorded of each patient.

Experimental design (overview). The GAITRite® CIRFACE is in orange color. The GAITRite® Platinium Plus Classic is in grey

Sacco G., Ben-Sadoun G., Gautier J., Simon R., Goupil M., Laureau P., Terrien J, & Annweiler C. (2023). Comparison of spatio-temporal gait parameters between the GAITRite® platinum plus classic and the GAITRite® CIRFACE among older adults: a retrospective observational study. BMC Geriatrics, 23, 132.
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Publication 2023
Acceleration Canes Deceleration Fatigue Nurses Patients Students, Medical

Top products related to «Deceleration»

1
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The Vivid E9 is a diagnostic ultrasound system developed by GE Healthcare. It is designed to provide high-quality imaging for a wide range of clinical applications.
2
Vivid 7 by GE Healthcare
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The Vivid 7 is a high-performance ultrasound system designed for cardiovascular and general imaging applications. It features advanced imaging technologies and versatile capabilities to support comprehensive diagnostic assessments.
3
Gaitrite by CIR Systems
Sourced in United States
The GAITRite is a portable electronic walkway used to measure spatial and temporal gait parameters. It captures an individual's footsteps as they walk across the mat, providing objective data on various gait characteristics.
4
Percoll by GE Healthcare
Sourced in United States, Sweden, United Kingdom, Germany, Canada, Japan, Denmark, Switzerland, Italy, Australia, Spain, Norway, Belgium, Macao
Percoll is a colloidal silica-based medium used for cell separation and gradient centrifugation. It is designed to provide a density gradient for the isolation and purification of cells, organelles, and other biological particles.
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Ficoll paque plus by GE Healthcare
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Ficoll-Paque PLUS is a sterile, ready-to-use medium for the isolation of mononuclear cells from blood or bone marrow by density gradient centrifugation. It is a polysucrose and sodium diatrizoate solution with a density of 1.077 g/mL.
6
Histopaque 1077 by Merck Group
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Histopaque-1077 is a density gradient medium used for the isolation of mononuclear cells from whole blood. It is a sterile, endotoxin-tested solution composed of polysucrose and sodium diatrizoate, adjusted to a density of 1.077 g/mL.
7
Cell tak by Corning
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Cell-Tak is a specialized adhesive used for attaching cells to various surfaces during cell culture experiments. It is composed of polyphenolic proteins derived from marine mussels. Cell-Tak provides a versatile and non-toxic means of securing cells to a wide range of materials, enabling researchers to maintain cell attachment and viability during experiments.
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Fetal Bovine Serum (FBS) is a cell culture supplement derived from the blood of bovine fetuses. FBS provides a source of proteins, growth factors, and other components that support the growth and maintenance of various cell types in in vitro cell culture applications.
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Percoll is a colloidal silica-based density gradient medium used for the separation and purification of cells, organelles, and other biological particles. It is designed to create density gradients for the isolation of specific cell types or subcellular fractions through centrifugation.

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