scholarly journals Leg Dominance and OSB12 Kick Start Performance in Young Competitive Swimmers

2021 ◽  
Vol 18 (24) ◽  
pp. 13156
Author(s):  
Ivan Matúš ◽  
Pavel Ružbarský ◽  
Bibiana Vadašová ◽  
Pavol Čech
Keyword(s):  
Body Position ◽  
Lower Body ◽  
Front Edge ◽  
Optimal Position ◽  
Starting Position ◽  
Explosive Strength ◽  
The Right ◽  
Leg Dominance ◽  
Basic Position ◽  
Competitive Swimmers

The purpose of this study was to examine differences in starting and kick-plate positions, pointing to an effect on kick-start performance with the dominant and non-dominant feet placed on the front edge of the OSB12 starting block. The sample included 20 female competitive swimmers whose average age was 16.1 ± 0.6 years. To assess swimmers’ lower body explosive strength and determine leg dominance, a triple hop distance test was administered. We determined the swimmers’ preferred starting position on a starting block in terms of the kick-plate setting and body position on the starting block. The results of our study demonstrate the importance of leg dominance and positioning on the OSB12 starting block. After the preferred starting position was determined, the optimal position for the kick start was selected. When the dominant leg was placed on the front edge of the starting block (p < 0.05; Cohen’s d—large effect), swimmers produced shorter block times and times to 2 and 5 m. For most of the tested swimmers, the optimal basic position on the starting block included neutral- and rear-weighted positions with the kick plate set to positions 3–4 and the right leg placed on the front edge of the OSB12 starting block.

Improvement of the prosthodontic treatment protocol in patients with TMD via functional diagnosis

2021 ◽  
Vol 26 (2) ◽  
pp. 144-149
Author(s):  
L. V. Dubova ◽  
S. S. Prisyazhnykh ◽  
N. V. Romankova ◽  
D. I. Tagiltsev ◽  
G. V. Maksimov
Keyword(s):  
Treatment Protocol ◽  
Cone Beam ◽  
Control Group ◽  
Central Position ◽  
Optimal Position ◽  
Electrical Nerve Stimulation ◽  
Functional Diagnosis ◽  
Stabilization Splint ◽  
Lower Jaw ◽  
The Right

Relevance. The purpose of the research is to improve the functional diagnosis protocol in prosthodontic treatment of patients with TMD.Materials and methods. The optimal position of the mandible was determined for each patient by two methods: 1) TENS (transcutaneous electrical nerve stimulation) and 2) TENS + kinesiography. Then, the cone-beam computed tomography (CBCT) data were analyzed to determine the most physiological position of the condyles.Results. The analysis of the CT scans of patients without TMD (control group) showed that the right and left condyles occupy an anterior or central symmetrical position relative to the glenoid fossa. In the first and second methods, the condyles occupy an anterior or central position, which is the most optimal position of the lower jaw for the manufacturing of an occlusal stabilization splint. The statistical coefficients allowed us to determine that the second method was more accurate, since the obtained values were lower than those of the first method.Conclusion. Based on the results of this study, we can conclude that the improvement of the protocol, namely a new method for determining the optimal position of the mandible is more time-consuming, but more accurate and allows increasing the effectiveness at all stages of treatment of patients with this pathology.

scholarly journals Benign tumors of the heart: Myxoma of the right atrium - a case report

2018 ◽  
Vol 75 (5) ◽  
pp. 512-515 ◽  
Author(s):  
Sasa Hinic ◽  
Jelena Saric ◽  
Predrag Milojevic ◽  
Jelena Gavrilovic ◽  
Tijana Durmic ◽  
...  
Keyword(s):  
Case Report ◽  
Body Position ◽  
Atrial Myxoma ◽  
Right Atrial ◽  
Benign Tumors ◽  
Non Invasive ◽  
Right Atrial Myxoma ◽  
The Right

Introduction. Myxoma is the most common primary benign heart tumor. The most frequent location is the left atrium, the chamber of the heart that receives oxygen- rich blood from the lungs. Myxomas usually develop in women, typically between the ages of 40 and 60. Symptoms may occur at any time, but most often they are asymptomatic or oligosymptomatic for a long period of time. Symptoms usually go along with body position, and are related to compression of the heart cavities, embolization and the appearance of general symptoms. The diagnosis of benign tumors of the heart is based on anamnesis, clinical features and findings of the tumor masses by use of non-invasive and invasive imaging methods. Extensive surgical resection of the myxoma is curative with minimal mortality. Long term clinical and echocardiographic follow-up is mandatory. Case report. We reported a case of a 62-year-old male, presented with 15 days of intermittent shortness of breath, dizziness and feeling of heart palpitations and subsequently diagnosed with right atrial myxoma based on transthoracic echocardiography . The patient was emergently operated in our hospital. Long-term followup did not reveal recurrence. Conclusion. Our case was an atypical localisation of right atrial myxoma. Whether the intracardiac mass is benign or malignant, early surgery is obligatory in order to prevent complications.

Effect of body position on spontaneous respiratory rate and tidal volume in patients with obesity, abdominal distension and ascites

1994 ◽  
Vol 3 (2) ◽  
pp. 102-106 ◽  
Author(s):  
SM Burns ◽  
MB Egloff ◽  
B Ryan ◽  
R Carpenter ◽  
JE Burns
Keyword(s):  
Tidal Volume ◽  
Respiratory Rate ◽  
Breathing Pattern ◽  
Body Position ◽  
Abdominal Distension ◽  
The Body ◽  
Abdominal Distention ◽  
Optimal Position ◽  
Nursing Textbooks ◽  
Spontaneously Breathing

BACKGROUND: Nursing textbooks and tradition suggest that the high-Fowler's position is best to optimize diaphragmatic excursion and effective breathing pattern. The optimal position for intubated patients with obesity, ascites or abdominal distention has yet to be determined but is important because weaning trial outcomes may reflect the effect of position rather than weaning trial tolerance. OBJECTIVE: To determine the body position that optimizes breathing pattern (tidal volume and respiratory rate) in spontaneously breathing, intubated patients with a large abdomen. METHODS: Nineteen intubated patients with abdominal distention, ascites or obesity who were on continuous positive airway pressure or the pressure support ventilation mode were studied in the 0 degrees, 45 degrees, 90 degrees and reverse Trendelenburg's at 45 degrees positions for 5 minutes prior to data collection. RESULTS: The RT at 45 degrees position resulted in a significantly larger tidal volume and lower respiratory rate than the 90 degrees position in intubated, spontaneously breathing patients with a large abdomen. The 45 degrees position resulted in a significantly lower respiratory rate than at 90 degrees; however, no difference in tidal volume was demonstrated. DISCUSSION: A high respiratory rate and low tidal volume potentiates atelectasis and ultimately failure to wean. It is important that the effect of positioning on breathing pattern in intubated patients be determined so that care planning results in optimal outcomes. CONCLUSIONS: The results of this study have implications for the selection of chair and bed positioning during weaning trials.

In Vivo Visualization of Intracardiac Structures With Gaseous Carbon Dioxide

1956 ◽  
Vol 186 (2) ◽  
pp. 325-334 ◽  
Author(s):  
M. J. Oppenheimer ◽  
T. M. Durant ◽  
H. M. Stauffer ◽  
G. H. Stewart ◽  
P. R. Lynch ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Body Position ◽  
Left Heart ◽  
Mortality And Morbidity ◽  
X Ray ◽  
Carbon Dioxide Gas ◽  
Great Vessels ◽  
Gaseous Carbon Dioxide ◽  
The Right

Carbon dioxide gas was injected a) intravenously, b) into the left heart, c) into the peripheral end of the carotid artery. Resulting cardiovascular and respiratory changes were observed by cinefluorography and by measurements of pressure pulses in various locations. Blood and respiratory gas changes were also observed. All changes were minimal (seconds duration) when the gas was introduced on the right or left side of the circulation. Injection into the peripheral carotid produced no untoward effects. The gas gave good visualization of valves and great vessels. Body position was not an important factor in mortality and morbidity when carbon dioxide was the gas used for contrast visualization by a cinefluorography x-ray technique. Carbon dioxide is a safe contrast medium to use for in vivo study of intracardiac structures. The gas has been used successfully by intravenous injection in human cases.

scholarly journals Description and validation of the ActiReg®: a novel instrument to measure physical activity and energy expenditure

2004 ◽  
Vol 92 (6) ◽  
pp. 1001-1008 ◽  
Author(s):  
Bo-Egil Hustvedt ◽  
Alf Christophersen ◽  
Lene R. Johnsen ◽  
Heidi Tomten ◽  
Geraldine McNeill ◽  
...  
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Body Position ◽  
Energy Costs ◽  
Motion Sensors ◽  
Storage Unit ◽  
Doubly Labelled Water ◽  
The Right ◽  
Different Levels ◽  
Objective Recording

The ActiReg® (PreMed AS, Oslo, Norway) system is unique in using combined recordings of body position and motion alone or combined with heart rate (HR) to calculate energy expenditure (EE) and express physical activity (PA). The ActiReg® has two pairs of position and motion sensors connected by cables to a battery-operated storage unit fixed to a waist belt. Each pair of sensors was attached by medical tape to the chest and to the front of the right thigh respectively. The collected data were transferred to a personal computer and processed by a dedicated program ActiCalc®. Calculation models for EE with and without HR are presented. The models were based on literature values for the energy costs of different activities and therefore require no calibration experiments. The ActiReg® system was validated against doubly labelled water (DLW) and indirect calorimetry. The DLW validation demonstrated that neither EE calculated from ActiReg® data alone (EEAR) nor from combined ActiReg® and HR data (EEAR–HR) were statistically different from DLW results. The EEAR procedure causes some underestimation of EE >11 MJ corresponding to a PA level >2·0. This underestimation is reduced by the EEAR–HR procedure. The objective recording of the time spent in different body positions and at different levels of PA may be useful in studies of PA in different groups and in studies of whether recommendations for PA are being met. The comparative ease of data collection and calculation should make ActiReg® a useful instrument to measure habitual PA level and EE.

Evidence for a dorso-medial parietal system involved in mental transformations of the body

1996 ◽  
Vol 76 (3) ◽  
pp. 2042-2048 ◽  
Author(s):  
E. Bonda ◽  
S. Frey ◽  
M. Petrides
Keyword(s):  
Blood Flow ◽  
Parietal Cortex ◽  
Human Subjects ◽  
Body Position ◽  
The Body ◽  
Right Hand ◽  
Positron Emission ◽  
Superior Parietal Cortex ◽  
The Right ◽  
Mental Transformations

1. The neural systems underlying body-space mental representation were studied by measuring changes in regional cerebral blood flow (CBF) with positron emission tomography in human subjects. 2. The experimental paradigm involved identification of the left or the right hand of the experimenter presented in different orientations or the palm of the subject's right hand. The subjects were required to decide whether it was the left or the right hand that was presented. To perform this task, the subjects had to move mentally the position of their own arm to adopt that of the experimenter's arm. The control condition involved the same type of tactual stimulation without the requirement of mental transformations of the subject's body position. The distribution of CBF was measured by means of the water bolus H2(15)O methodology during the performance of these tasks. 3. Comparison of the distribution of CBF between the experimental and control tasks was carried out to reveal changes specific to the mental transformations of the subject's body. Significant blood flow increases were observed in the caudal superior parietal cortex, including the intraparietal sulcus, and the adjacent medial parietal cortex. These findings demonstrated that there is a dorsomedially directed parietal system underlying mental transformations of the body in interactive relation with external space.

Ergonomics of work and movement disorders among dentists

2018 ◽  
Vol 564 (9) ◽  
pp. 22-27
Author(s):  
Natalia Kuciel ◽  
Demszyczak Iwona ◽  
Edyta Sutkowska ◽  
Michał Sokołowski ◽  
Justyna Mazurek ◽  
...  
Keyword(s):  
Work Environment ◽  
Body Position ◽  
Motor Disorders ◽  
Dental Surgery ◽  
Number Of Factors ◽  
Movement System ◽  
The Right ◽  
The Relationship ◽  
Static Nature ◽  
Experience Pain

Dentists in the workplace are exposed to a number of factors that affect the condition of the movement system. The main problem seams to be the static nature of work due to the adoption of forced body position. The aim of the study was to demonstrate the relationship between the use of ergonomics principles in the professional work of dentists and the occurrence of motor disorders. In addition, knowledge of the principles of dental ergonomics in this group was assessed. The study was conducted among 79 dentists. The knowledge and application of the principles of ergonomics and the occurrence of ailments within the motor system were evaluated. Only 4% of dentists were taking a break from work after each patient, while 18% were working without interruption. The vast majority (84%) of dentists, while performing dental surgery, took a sitting position. More than half (54%) of dentists who participated in the study worked with assistants. Among people who experience pain in the cervical spine 54% of people worke in the position with neck inclined to the right. Most principles of ergonomics are not correct, so they should be adjusted individually to a particular dentist taking into account its physical capabilities, the geometry of the work environment, the range of activities performed, and personal preferences as well.

scholarly journals Modulation of the ultradian human nasal cycle by sleep stage and body position

2017 ◽  
Vol 75 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Richard E. Frye ◽  
Deborah F. Rosin ◽  
Adrian R. Morrison ◽  
Fidias E. Leon-Sarmiento ◽  
Richard L. Doty
Keyword(s):  
Rem Sleep ◽  
Sleep Stage ◽  
Body Position ◽  
Video Camera ◽  
Sleep Stages ◽  
Nasal Airflow ◽  
Somatosensory Stimulation ◽  
Nasal Cycle ◽  
Left And Right ◽  
The Right

ABSTRACT Objective: The nasal cycle, which is present in a significant number of people, is an ultradian side-to-side rhythm of nasal engorgement associated with cyclic autonomic activity. We studied the nasal cycle during REM/non-REM sleep stages and examined the potentially confounding influence of body position on lateralized nasal airflow. Methods: Left- and right-side nasal airflow was measured in six subjects during an eight-hour sleep period using nasal thermistors. Polysomnography was performed. Simultaneously, body positions were monitored using a video camera in conjunction with infrared lighting. Results: Significantly greater airflow occurred through the right nasal chamber (relative to the left) during periods of REM sleep than during periods of non-REM sleep (p<0.001). Both body position (p < 0.001) and sleep stage (p < 0.001) influenced nasal airflow lateralization. Conclusions: This study demonstrates that the lateralization of nasal airflow and sleep stage are related. Some types of asymmetrical somatosensory stimulation can alter this relationship.

Differential effects of lower body negative pressure on forearm and calf blood flow

1986 ◽  
Vol 61 (3) ◽  
pp. 994-998 ◽  
Author(s):  
L. K. Essandoh ◽  
D. S. Houston ◽  
P. M. Vanhoutte ◽  
J. T. Shepherd
Keyword(s):  
Blood Flow ◽  
Negative Pressure ◽  
Skeletal Muscles ◽  
Lower Body Negative Pressure ◽  
Valsalva Maneuver ◽  
Lower Body ◽  
Blood Flows ◽  
Resistance Vessels ◽  
Series Of Experiments ◽  
The Right

Modest degrees of lower body negative pressure (less than 20 mmHg) cause a reflex constriction of forearm resistance vessels attributable to a decrease in activity of cardiopulmonary mechanoreceptors. In the present study, we sought to determine whether the calf vessels respond similarly. Left forearm and right calf blood flows were measured simultaneously by strain-gauge plethysmography in 10 healthy volunteers. Forearm flows decreased significantly from control during negative pressures of 10, 15, or 20 mmHg, whereas calf flows did not decrease significantly until 20 mmHg; at 10, 15, and 20 mmHg, decreases in forearm flow were significantly greater than those of the calf. Similar results were obtained in a second series of experiments in which venous pooling in the right leg during lower body negative pressure was prevented by enclosing it in a boot. At 40 mmHg, or after a Valsalva maneuver, both forearm and calf vessels constricted markedly and to the same degree. It appears that the reflex reduction in blood flow to the skeletal muscles of the limbs resulting from deactivation of the low-pressure intrathoracic mechanoreceptors is directed primarily to the arm.

scholarly journals Choosing the Right Body Position for Assessing Trunk Flexors and Extensors Torque Output

2011 ◽  
Vol 12 (1) ◽  
Author(s):  
Agnieszka Szpala ◽  
Alicja Rutkowska-Kucharska ◽  
Jarosław Drapała ◽  
Krzysztof Brzostowski
Keyword(s):  
Body Position ◽  
The Right
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