Comparison of Biomechanical Forces Generated during Trumpet Performance in Contrasting Settings

2002 ◽  
Vol 17 (4) ◽  
pp. 149-154
Author(s):  
Karendra Devroop ◽  
Kris Chesky

The primary aim of this study was to investigate how mouthpiece forces may vary as a function of the setting in which the musicians are asked to perform. Ten college-level trumpet players were assessed while playing the same pieces of music in a jazz big band rehearsal and a controlled laboratory/clinical setting. Trumpet force was measured using a custom Trumpet Sensor System that measures mouthpiece forces and angular position. Overall, the results from this study indicate that mouthpiece forces generated in the research laboratory were similar to those in the rehearsal venue. The data indicate no significant differences between the two conditions that warrant concern for collecting performance data in an experimental setting.

2018 ◽  
Vol 10 (2) ◽  
Author(s):  
Massimiliano Pau ◽  
Federica Corona ◽  
Roberta Pili ◽  
Carlo Casula ◽  
Marco Guicciardi ◽  
...  

This study aimed to investigate possible differences in spatio-temporal gait parameters of people with Parkinson’s Disease (pwPD) when they are tested either in laboratory using 3D Gait Analysis or in a clinical setting using wearable accelerometers. The main spatio-temporal gait parameters (speed, cadence, stride length, stance, swing and double support duration) of 31 pwPD were acquired: i) using a wearable accelerometer in a clinical setting while wearing shoes (ISS); ii) same as condition 1, but barefoot (ISB); iii) using an optoelectronic system (OES) undressed and barefoot. While no significant differences were found for cadence, stance, swing and double support duration, the experimental setting affected speed and stride length that decreased (by 17% and 12% respectively, P<0.005) when passing from the clinical (ISS) to the laboratory (OES) setting. These results suggest that gait assessment should be always performed in the same conditions to avoid errors, which may lead to inaccurate patient’s evaluations.


2018 ◽  
Vol 4 (1) ◽  
pp. 243-245 ◽  
Author(s):  
Sabine Gruber ◽  
Sebastian Buhl ◽  
Clemens Bulitta

AbstractThe purpose of this work was to evaluate the decontamination potential of the Potok system both in an experimental setting in a research Operating Room (OR) with standalone Air Decontamination Units (Potok 150-M-01) and in a clinical setting in a real operating theatre in Moscow. Our experiments showed an impact of the Potok units on the bacterial contamination of the room air according to the Swedish SIS-TS 39:2015 standard. For the initial measurements in our research OR in Weiden this could be shown by a decrease of the bacterial burden at all three different measurement points (OR table, instrumentation tray, periphery). Also the subsequently done measurements in the Moscow hospital verified this decontaminating effectivity of the Potok system. In this case the initial background contamination of the operating theatre was higher than in the research OR in Germany. This bacterial burden could be effectively decreased by the use of the installed Potok based ventilation system.


2018 ◽  
Vol 4 (1) ◽  
pp. 177-179
Author(s):  
Sabine Gruber ◽  
Sebastian Buhl ◽  
Clemens Bulitta

AbstractThe purpose of this work was to evaluate the decontamination potential of the Potok system both in an experimental setting in a research Operating Room (OR) with standalone Air Decontamination Units (Potok 150-M-01) and in a clinical setting in a real operating theatre in Moscow. Our experiments showed an impact of the Potok units on the bacterial contamination of the room air according to the Swedish SIS-TS 39:2015 standard. For the initial measurements in our research OR in Weiden this could be shown by a decrease of the bacterial burden at all three different measurement points (OR table, instrumentation tray, periphery). Also the subsequently done measurements in the Moscow hospital verified this decontaminating effectivity of the Potok system. In this case the initial background contamination of the operating theatre was higher than in the research OR in Germany. This bacterial burden could be effectively decreased by the use of the installed Potok based ventilation system.


PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245578
Author(s):  
Claude Guérin ◽  
Martin Cour ◽  
Neven Stevic ◽  
Florian Degivry ◽  
Erwan L’Her ◽  
...  

COVID-19 pandemic sets the healthcare system to a shortage of ventilators. We aimed at assessing tidal volume (VT) delivery and air recirculation during expiration when one ventilator is divided into 2 test-lungs. The study was performed in a research laboratory in a medical ICU of a University hospital. An ICU (V500) and a lower-level ventilator (Elisée 350) were attached to two test-lungs (QuickLung) through a dedicated flow-splitter. A 50 mL/cmH2O Compliance (C) and 5 cmH2O/L/s Resistance (R) were set in both A and B test-lungs (A C50R5 / B C50R5, step1), A C50-R20 / B C20-R20 (step 2), A C20-R20 / B C10-R20 (step 3), and A C50-R20 / B C20-R5 (step 4). Each ventilator was set in volume and pressure control mode to deliver 800mL VT. We assessed VT from a pneumotachograph placed immediately before each lung, pendelluft air, and expiratory resistance (circuit and valve). Values are median (1st-3rd quartiles) and compared between ventilators by non-parametric tests. Between Elisée 350 and V500 in volume control VT in A/B test- lungs were 381/387 vs. 412/433 mL in step 1, 501/270 vs. 492/370 mL in step 2, 509/237 vs. 496/332 mL in step 3, and 496/281 vs. 480/329 mL in step 4. In pressure control the corresponding values were 373/336 vs. 430/414 mL, 416/185 vs. 322/234 mL, 193/108 vs. 176/ 92 mL and 422/201 vs. 481/329mL, respectively (P<0.001 between ventilators at each step for each volume). Pendelluft air volume ranged between 0.7 to 37.8 ml and negatively correlated with expiratory resistance in steps 2 and 3. The lower-level ventilator performed closely to the ICU ventilator. In the clinical setting, these findings suggest that, due to dependence of VT to C, pressure control should be preferred to maintain adequate VT at least in one patient when C and/or R changes abruptly and monitoring of VT should be done carefully. Increasing expiratory resistance should reduce pendelluft volume.


1977 ◽  
Vol 8 (1) ◽  
pp. 5-14 ◽  
Author(s):  
David L. Ratusnik ◽  
Roy A. Koenigsknecht

Six speech and language clinicians, three black and three white, administered the Goodenough Drawing Test (1926) to 144 preschoolers. The four groups, lower socioeconomic black and white and middle socioeconomic black and white, were divided equally by sex. The biracial clinical setting was shown to influence test scores in black preschool-age children.


Author(s):  
Diane L. Kendall

Purpose The purpose of this article was to extend the concepts of systems of oppression in higher education to the clinical setting where communication and swallowing services are delivered to geriatric persons, and to begin a conversation as to how clinicians can disrupt oppression in their workplace. Conclusions As clinical service providers to geriatric persons, it is imperative to understand systems of oppression to affect meaningful change. As trained speech-language pathologists and audiologists, we hold power and privilege in the medical institutions in which we work and are therefore obligated to do the hard work. Suggestions offered in this article are only the start of this important work.


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