scholarly journals Assessing Post-Driving Discomfort and Its Influence on Gait Patterns

Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8492
Author(s):  
Marko M. Cvetkovic ◽  
Denise Soares ◽  
João Santos Baptista
Keyword(s):  
Blood Circulation ◽  
Walking Speed ◽  
Driving Simulator ◽  
Study Groups ◽  
Whole Body ◽  
Interface Pressure ◽  
Constant Attention ◽  
Gait Patterns ◽  
Long Time ◽  
Body Discomfort

Professional drivers need constant attention during long driving periods and sometimes perform tasks outside the truck. Driving discomfort may justify inattention, but it does not explain post-driving accidents outside the vehicle. This study aims to study the discomfort developed during driving by analysing modified preferred postures, pressure applied at the interface with the seat, and changes in pre- and post-driving gait patterns. Each of the forty-four volunteers drove for two hours in a driving simulator. Based on the walking speed changes between the two gait cycles, three homogeneous study groups were identified. Two groups performed faster speeds, while one reduced it in the post-steering gait. While driving, the pressure at the interface and the area covered over the seat increased throughout the sample. Preferred driving postures differed between groups. No statistical differences were found between the groups in the angles between the segments (flexed and extended). Long-time driving develops local or whole-body discomfort, increasing interface pressure over time. While driving, drivers try to compensate by modifying their posture. After long steering periods, a change in gait patterns can be observed. These behaviours may result from the difficulties imposed on blood circulation by increasing pressure at this interface.

scholarly journals Biomechanical Aspects of the Foot Arch, Body Balance and Body Weight Composition of Boys Training Football

2021 ◽  
Vol 18 (9) ◽  
pp. 5017
Author(s):  
Joanna M. Bukowska ◽  
Małgorzata Jekiełek ◽  
Dariusz Kruczkowski ◽  
Tadeusz Ambroży ◽  
Jarosław Jaszczur-Nowicki
Keyword(s):  
Body Composition ◽  
Body Height ◽  
Study Groups ◽  
The Body ◽  
Whole Body ◽  
Training Methods ◽  
Training Experience ◽  
Mean Values ◽  
Significance Level ◽  
Body Balance

Background: The aim of the study is to assess the body balance and podological parameters and body composition of young footballers in the context of the control of football training. Methods: The study examined the distribution of the pressure of the part of the foot on the ground, the arch of the foot, and the analysis of the body composition of the boys. The pressure center for both feet and the whole body was also examined. The study involved 90 youth footballers from Olsztyn and Barczewo in three age groups: 8–10 years, 11–13 years old, and 14–16 years. The study used the Inbody 270 body composition analyzer and the EPSR1, a mat that measures the pressure distribution of the feet on the ground. Results: The results showed statistically significant differences in almost every case for each area of the foot between the groups of the examined boys. The most significant differences were observed for the metatarsal area and the left heel. In the case of stabilization of the whole body, statistically significant differences were noted between all study groups. In the case of the body composition parameters, in the examined boys, a coherent direction of changes was noticed for most of them. The relationships and correlations between the examined parameters were also investigated. The significance level in the study was set at p < 0.05. Conclusions: Under the training rigor, a statistically significant increase in stability was observed with age. The total length of the longitudinal arch of both feet of the examined boys showed a tendency to flatten in direct proportion to the age of the examined boys. Mean values of the body composition parameters reflect changes with the ontogenetic development, basic somatic parameters (body height and weight) and training experience, and thus with the intensity and volume of training. This indicates a correct training process that does not interfere with the proper development of the body in terms of tissue and biochemical composition.

scholarly journals Gait Patterns and Mood in Everyday Life: A Comparison Between Depressed Patients and Non-depressed Controls

2021 ◽  
Author(s):  
Dirk Adolph ◽  
Wolfgang Tschacher ◽  
Helen Niemeyer ◽  
Johannes Michalak
Keyword(s):  
Everyday Life ◽  
Walking Speed ◽  
Laboratory Findings ◽  
Gait Patterns ◽  
Gait Characteristics ◽  
Clinical Diagnoses ◽  
Current Mood ◽  
General Movement ◽  
And Gender ◽  
Vertical Up

Abstract Background Previous laboratory findings suggest deviant gait characteristics in depressed individuals (i.e., reduced walking speed and vertical up-and-down movements, larger lateral swaying movements, slumped posture). However, since most studies to date assessed gait in the laboratory, it is largely an open question whether this association also holds in more naturalistic, everyday life settings. Thus, within the current study we (1) aimed at replicating these results in an everyday life and (2) investigated whether gait characteristics could predict change in current mood. Methods We recruited a sample of patients (n = 35) suffering from major depressive disorder and a sample of age and gender matched non-depressed controls (n = 36). During a 2-day assessment we continuously recorded gait patterns, general movement intensity and repetitively assessed the participant’s current mood. Results We replicated previous laboratory results and found that patients as compared to non-depressed controls showed reduced walking speed and reduced vertical up-and-down movements, as well as a slumped posture during everyday life episodes of walking. Moreover, independent of clinical diagnoses, higher walking speed, and more vertical up-and-down movements significantly predicted more subsequent positive mood, while changes in mood did not predict subsequent changes in gait patterns. Conclusion In sum, our results support expectations that embodiment (i.e., the relationship between bodily expression of emotion and emotion processing itself) in depression is also observable in naturalistic settings, and that depression is bodily manifested in the way people walk. The data further suggest that motor displays affect mood in everyday life.

Drivers’ Gaze Behaviors are Influenced by Vehicle Position

2020 ◽  
Vol 64 (1) ◽  
pp. 1625-1629 ◽  
Author(s):  
Yuki Okafuji ◽  
Takahiro Wada ◽  
Toshihito Sugiura ◽  
Kazuomi Murakami ◽  
Hiroyuki Ishida
Keyword(s):  
Driving Simulator ◽  
Lateral Position ◽  
Gaze Behavior ◽  
Lateral Deviation ◽  
Simulated Driving ◽  
The Gaze ◽  
Fixation Distance ◽  
Long Time ◽  
Vehicle Position ◽  
Lane Keeping

Drivers’ gaze behaviors in naturalistic and simulated driving tasks have been investigated for decades. Many studies focus on driving environment to explain a driver’s gaze. However, if there is a great need to use compensatory steering for lane-keeping, drivers could preferentially acquire information directly required for the task. Therefore, we assumed that a driver’s gaze behavior was influenced not only by the environment but also the vehicle position, especially the lateral position. To verify our hypothesis, we carried out a long-time driving simulator experiment, and the gaze behaviors of two participating drivers were analyzed. Results showed that gaze behavior—the fixation distance and the lateral deviation of the fixation—was influenced by the lateral deviation of the vehicle. Consequently, we discussed processes that determined drivers’ gaze behaviors.

A case of a lacerated dermoid ovarian cyst

1937 ◽  
Vol 33 (5) ◽  
pp. 626-628
Author(s):  
N. S. Sokolova
Keyword(s):  
General Practitioner ◽  
Blood Circulation ◽  
Abdominal Cavity ◽  
Broad Ligament ◽  
Ovarian Cysts ◽  
Long Time ◽  
Circulatory Disorders ◽  
Immediate Surgery ◽  
Turn Over ◽  
Reverse Development

Ovarian cysts are quite common among gynecological patients. Surgically available for small hospitals, they are undoubtedly of interest to the general practitioner. Often unnoticed for a long time, ovarian cysts nevertheless always pose for a woman a threat of either cancerous degeneration, or the possibility of twisting, with all its consequences: subsequent fusion with surrounding organs, hemorrhages into the tumor, suppurations, ruptures, peritonitis and lacing. The reason for such detachments is, in essence, still unclear. Franz, Slavyansky believe that the pedicle of the tumor often makes a 90 turn over the upper edge of the broad ligament. With greater twisting, the blood circulation of the tumor is disrupted until it stops completely. With a slow malnutrition of the tumor, the latter first stagnates and then shrinks. Its walls undergo reverse development, and the cyst, thus, can heal itself. With rapid twisting and severe circulatory disorders in the cyst, we have a clinical picture of an "acute abdomen", which requires immediate surgery. Sometimes the cyst leg, twisted with thrombosed vessels, from lack of nutrition, atrophies, becomes thinner and interrupted. The tumor is detached, made either completely free in the abdominal cavity, or feeds through adhesions with the surrounding organs.

scholarly journals Ultrasound Microbubbles Enhance the Neuroprotective Effect of Mouse Nerve Growth Factor on Intraocular Hypertension-Induced Neuroretina Damage in Rabbits

2016 ◽  
Vol 2016 ◽  
pp. 1-9
Author(s):  
Xiaoli Shen ◽  
Lina Huang ◽  
Dahui Ma ◽  
Jun Zhao ◽  
Yi Xie ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Blood Circulation ◽  
Neuroprotective Effect ◽  
Whole Body ◽  
Destruction Process ◽  
Optic Nerve Damage ◽  
Neuroprotective Drugs ◽  
Target Organs ◽  
Whole Body Metabolism ◽  
Ultrasound Microbubbles

Ultrasound microbubble combined optic protection drugs have obvious protective effect on optic nerve damage. This way of targeting drug delivery is becoming more simple, not through the whole body metabolism, avoiding drug via blood circulation when facing the decomposition and the environment in the interference and destruction process of drugs, to maximize the guarantee to reach target organs of drug concentration and to reache the maximum therapeutic effect. The technique of ultrasound microbubbles is safe, controllable, nonimmunogenic, and repeatable. It provides us with a novel idea in the administration of neuroprotective drugs.

scholarly journals Effect of Soccer Foot Pressure on Pressure Distributions

2018 ◽  
Vol 6 (6) ◽  
pp. 70
Author(s):  
Ahmet Uzun ◽  
Latif Aydos ◽  
Metin Kaya ◽  
H. Ahmet Pekel ◽  
Ulunay Kanatli
Keyword(s):  
Study Groups ◽  
Foot Pressure ◽  
Pressure Distributions ◽  
Professional Soccer ◽  
Grand Total ◽  
Long Time ◽  
Analysis System ◽  
The Right ◽  
In The Beginning ◽  
And Control

The aim of this research is to investigate the effect of playing soccer for a long time in for professional soccer players regarding sole pressure. Despite the increasing prevalence of new methods developed in the footpad pressure measurement in recent years, our knowledge about pressure distribution of the footplate is still insufficient, especially for sportsmen (Ford et al., 2006). Plantar pressure analysis system (EMED-SF) was used in the study. Statistically significant differences between the study groups were examined using the non-parametric Mann-Whitney U test. According to the results of the research, there was no statistical difference between the experimental and control groups in terms of physical characteristics. However, significant results were found at (0.01-0.05) level in the beginning and grand total of heel medial, heel lateral, 1,2,3,4,5 metatars in the maximal force comparisons applied to the right and left foot contact area and the floor.

Comparison of a 12-Week Whole-Body Exergaming Program on Young Adults: Differentiation in Flexibility, Muscle Strength, Reaction Time, and Walking Speed Between Sexes

2018 ◽  
Vol 29 (7) ◽  
pp. 424-432 ◽  
Author(s):  
Yeşim Bakar ◽  
Alper Tuğral ◽  
Alp Özel ◽  
Yasin D. Altuntaş
Keyword(s):  
Reaction Time ◽  
Muscle Strength ◽  
Walking Speed ◽  
Whole Body ◽  
Video Gaming ◽  
Walk Test ◽  
Time Machine ◽  
Visual Reaction Time ◽  
Post Intervention ◽  
Visual Reaction

This study aimed to investigate the effects of exergaming on flexibility, muscle strength, reaction time, and walking speed of adults within sex differences. Fifty-four individuals participated in a 12-week exergaming program. Three 30-min sessions were conducted each week. Baseline and post-intervention assessments were done using the sit-and-reach and bend-over tests for flexibility, hand-held dynamometer for muscle strength, auditory and visual reaction time machine for reaction time, and 5-meter walk test for walking speed. There were no significant changes in the sit-and-reach, bend-over test, and auditory-visual reaction time for either gender ( p > .05) with the intervention. Walking speed and muscle strength improved after exergaming in both sexes ( p < .05). The study showed that the video gaming intervention led to significant and equal improvements in muscle strength and walking speed for both sexes; however, it had no impact on flexibility and auditory-visual reaction time.

Bioinspired nanocarriers for an effective chemotherapy of hepatocellular carcinoma

2018 ◽  
Vol 33 (1) ◽  
pp. 72-81 ◽  
Author(s):  
Lei Xu ◽  
Shuo Wu ◽  
Xiaoqiu Zhou
Keyword(s):  
Hepg2 Cells ◽  
Blood Circulation ◽  
Antitumor Effect ◽  
Membrane Vesicles ◽  
Controlled Drug Release ◽  
Coated Nanoparticles ◽  
Rbc Membrane ◽  
Long Time

Drug-loaded nanoparticles have been widely researched in the antitumor. However, some of them are unsatisfactory in the long blood circulation and controlled drug release. Red blood cell (RBC) membrane vesicles (RV)-coated nanoparticles have gained more and more attention in drug delivery for their many unique advantages, such as excellent stability, long blood circulation, and reduced the macrophage cells uptake. Herein, by utilizing the advantages of RV, we fabricated RV-coated poly(lactide- co-glycolide) (PLGA)–docetaxel (RV/PLGA/DTX) nanoparticles to enhance the antitumor efficiency in vivo. The RV/PLGA/DTX showed spherical morphology with particle size of about 100 nm and zeta potential at −12.63 mV, which could maintain stability for a long time. The RV/PLGA/DTX significantly enhanced cellular uptake of DTX compared to PLGA/DTX in HepG2 cells. Moreover, RV/PLGA/DTX showed the strongest antitumor effect in vitro. Prolonged blood circulation and enhanced DTX accumulation at the tumor site through enhanced permeability and retention (EPR) effect were achieved by RV/PLGA/DTX, which eventually obtained satisfactory antitumor effect and depressed system toxicity on mice bearing HepG2 xenografts mouse models when compared with free DTX. The hematoxylin and eosin (H&E) and immunofluorescence assays further proved the advantages of RV/PLGA/DTX in vivo antitumor. These RV-coated nanoparticles provide a mimetic therapy, completely inhibited the growth of the HepG2 cells, and with simple compositions, suggesting it to be an ideal strategy for improving the antitumor effect of drug-loaded nanoparticles.

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