Finger tremor after carbon disulfide-based pesticide exposures

Index finger tremor accompanying voluntary movement was studied in 19 age-matched control subjects and in 19 grain industry employees chronically exposed to carbon disulfide-based fumigants. Visual judgments of tremor amplitude made by neurologists during clinical examinations equaled the sensitivity of computerized tremor amplitude measurements. Tremor frequency variations detectable only with computerized measurement were present in grain workers with and without increased tremor amplitudes. Frequency differences discriminated between normal subjects and 74% of the grain workers. The distribution of tremor frequency power in the grain workers was often sequestered at 5 to 7 Hz, reminiscent of tremor in idiopathic Parkinson's disease. These findings suggest that the measurement of subtle tremor frequency changes may provide an early indication of chronic carbon disulfide poisoning.

Smartphone-Based Escalator Recognition for the Visually Impaired

It is difficult for visually impaired individuals to recognize escalators in everyday environments. If the individuals ride on escalators in the wrong direction, they will stumble on the steps. This paper proposes a novel method to assist visually impaired individuals in finding available escalators by the use of smartphone cameras. Escalators are recognized by analyzing optical flows in video frames captured by the cameras, and auditory feedback is provided to the individuals. The proposed method was implemented on an Android smartphone and applied to actual escalator scenes. The experimental results demonstrate that the proposed method is promising for helping visually impaired individuals use escalators.

Intrahospital Transfer of Patients with Traumatic Brain Injury: Increase in Intracranial Pressure

AIM

To assess the dynamic of intracranial pressure (ICP), cerebral perfusion pressure (CPP), and dynamic pressure reactivity index (PRx) during intrahospital transport.

MATERIALS AND METHODS

There were 33 comatose patients with severe traumatic brain injury (TBI). The mean age was 36.3 ± 4.8 years (range 19-45 years), and there were 17 men and 16 women. The median Glasgow Coma Scale score at admission was 6.2 ± 0.7. Computed tomography (CT) included native CT, perfusion CT, and CT angiography.

RESULTS

The mean CPPs before and after the CT scans were 95.9 ± 10.7 and 81.5 ± 12.5 mmHg respectively. The mean ICP before transport was 19.98 ± 5.3 mmHg (minimum 11.7; maximum 51.7). It was statistically significantly lower (p < 0.001) than during the transfer (26.1 ± 13.5 mmHg). During the period described all patients had increased ICP, especially during vertical movement in an elevator. During horizontal movement on the floor ICP remained higher (p < 0.05). The mean dynamic PRx before and after intrahospital transport was 0.23 ± 0.14 and 0.52 ± 0.04, respectively (p < 0.001). Average duration of the transfer and CT study was 15.3 ± 3.4 min.

CONCLUSION

Intrahospital transport of patients with TBI may lead to a significant increase in ICP, dynamic PRx, and decreased CPP. The results suppose that the decision to perform brain CT in comatose patients with TBI should be carefully considered by clinicians.

Stair descending exercise using a novel automatic escalator: effects on muscle performance and health-related parameters

A novel automatic escalator was designed, constructed and used in the present investigation. The aim of the present investigation was to compare the effect of two repeated sessions of stair descending versus stair ascending exercise on muscle performance and health-related parameters in young healthy men. Twenty males participated and were randomly divided into two equal-sized groups: a stair descending group (muscle-damaging group) and a stair ascending group (non-muscle-damaging group). Each group performed two sessions of stair descending or stair ascending exercise on the automatic escalator while a three week period was elapsed between the two exercise sessions. Indices of muscle function, insulin sensitivity, blood lipid profile and redox status were assessed before and immediately after, as well as at day 2 and day 4 after both exercise sessions. It was found that the first bout of stair descending exercise caused muscle damage, induced insulin resistance and oxidative stress as well as affected positively blood lipid profile. However, after the second bout of stair descending exercise the alterations in all parameters were diminished or abolished. On the other hand, the stair ascending exercise induced only minor effects on muscle function and health-related parameters after both exercise bouts. The results of the present investigation indicate that stair descending exercise seems to be a promising way of exercise that can provoke positive effects on blood lipid profile and antioxidant status.

Going Up!: Exploring the Phenomenon of the Glass Escalator in Nursing

The "glass escalator" refers to the structural advantage that males possess in female-dominated occupations that tend to enhance their careers. Males are less likely to enter female-dominated occupations, but when they do, they tend to rise faster and quicker to upper levels of leadership. There is limited research on the glass escalator and its effect on nursing. However, the concept has far-reaching effects for both nurse leaders and the nursing profession. Thus, a critical examination of this phenomenon is crucial. Although males represent 10% of the nursing workforce, they hold close to half of top leadership positions in nursing. While the impact of the glass escalator is clear for White males, it does not appear to apply to minority males or persons of color equally or equitably. In light of each of these factors, it is crucial that nurse leaders understand the glass escalator phenomenon, prior and current research, its implications, and have clear suggestions for addressing it in the workplace moving forward.

The use of point-of-decision prompts to increase stair climbing in Singapore

Physical inactivity is a significant contributor to worldwide mortality and morbidity associated with non-communicable diseases. An excellent avenue to incorporate lifestyle physical activity into regular routine is to encourage the use of stairs during daily commutes. We evaluated the effectiveness of point-of-decision prompts (PODPs) in promoting the use of stairs instead of the escalators in a Singapore Mass Rapid Transit (MRT) station. We measured the number of stair climbers before the PODPs were put up, during the 4 weeks that they were in use, and 2 weeks after they were removed. Measurements at a no intervention control site were additionally taken. The use of stair-riser banners was associated with an increase in the number of people using the stairs by a factor of 1.49 (95% CI 1.34–1.64). After the banners were removed, the number of stair climbers at the experimental station dropped to slightly below baseline levels. The Singapore MRT serves a diverse multi-ethnic population with an average daily ridership of over 2 million and 88 stations island-wide. An increase of physical activity among these MRT commuters would have a large impact at the population level. Our findings can be translated into part of the national strategy to encourage an active lifestyle in Singaporeans.

Elevator-related injuries to children in the United States, 1990 through 2004

This study describes the epidemiology of elevator-related injuries among children in the United States from 1990 to 2004. A retrospective cohort analysis was performed using data from the National Electronic Injury Surveillance System of the US Consumer Product Safety Commission. Reported cases were used to project national estimates. An estimated 29 030 elevator-related injuries occurred among children in the United States during 1990 to 2004. The mean age was 8.1 years (SD, 6.1 years), with 53.3% of injuries among boys. The overall injury rate was 2.5 injuries per 100,000 population. The injury rate for children aged 0-4 years was 4.2 per 100,000 population, and for children aged 5-19 years the injury rate was 1.9 per 100,000 population. The most frequent cause of injury was the elevator door closing on a body part, the most frequently injured body region was the upper extremity, and soft-tissue injuries were the most frequent type of injury. Children should be closely supervised on or near elevators to reduce the risk of injury.

Respiratory health of two cohorts of terminal grain elevator workers studied 30 years apart

INTRODUCTION

We evaluated the respiratory health of two cohorts of grain terminal elevator workers who participated in one of either respiratory health surveys undertaken in 1978 and 2008.

METHODS

Questionnaire and spirometry data from 584 workers from the 1978 survey and 215 workers from the 2008 survey were compared using logistic regression and general linear modeling.

RESULTS

The geometric means of area samples of grain dust averaged 8.28 mg/m(3) in 1978 and 2.06 mg/m(3) in 2008. Workers in the 1978 survey had a significantly higher prevalence of respiratory symptoms (with the largest adjusted odds ratio of 3.78, 95% CI 2.07-7.25, for shortness of breath), a lower prevalence of atopic conditions and lower mean lung function.

CONCLUSION

Current grain workers had a lower risk of respiratory health consequences and a greater prevalence of atopic conditions than workers surveyed 30 years prior, most likely associated with reduced exposure to grain dust in the terminal elevator environment.

Escalator injuries in Genevan children: a report of 6 cases

We present a retrospective survey of the mechanism and the lesions caused by escalators in Genevan children. Though these accidents are rare, they are often very serious. They occur primarily among children around the age of three and affect especially the hand. It is not economically feasible to replace or modify current escalators. It is therefore important that the current warning signs on escalators be improved. As there is a specific risk to children of catching fingers in the escalator and most parents are unaware of this type of danger, a warning sign with an explicit illustration could be of value. Also an insertion of a plastic bar just above the moving stairs on each lateral wall would block any potential extremities from being caught in the gap between the steps and the side of the staircase.

How available to European children and young people with cerebral palsy are features of their environment that they need?

BACKGROUND

The UN Convention on the Rights of Persons with Disabilities requires accessibility to the physical and social environments. However, individuals with cerebral palsy (CP) have many difficulties in accessing the environment they need for functional independence and social inclusion.

AIMS

To examine the availability of environmental features which children with CP need for optimal participation, and whether availability changed for them between ages 8-12 and 13-17 years.

METHODS

The sample is the 594 children with CP, born 31/07/1991-01/04/1997, who took part in the SPARCLE study at age 8-12 (SPARCLE 1) and again at 13-17 years (SPARCLE 2). Participants were randomly sampled from population registers of children with CP in eight European regions; one further region recruited from multiple sources. Data about environment were captured with the European Child Environment Questionnaire (60 items). Differences in availability of environmental features between childhood and adolescence were assessed using McNemar's test; differences between regions were assessed by ranking regions. Differences in availability between regions were assessed by ranking regions.

RESULTS

For seven environmental features significantly (p<0.01) fewer individuals needed the feature in SPARCLE 2 than in SPARCLE 1, whilst for two features more individuals needed the feature. Nine features in SPARCLE 1 and six features in SPARCLE 2 were available to less than half the participants who needed them. Eight features showed significantly (p<0.01) higher availability in SPARCLE 2 than in SPARCLE 1 (enlarged rooms, adapted toilet, modified kitchen and hoists at home, adapted toilets and lifts at school, an adequate vehicle, grants for home modifications) while none showed significantly lower availability. The relative rankings of the better and less good regions persisted from the age 8-12year age group to the 13-17year age group.

CONCLUSIONS

Needed environmental features are unavailable to many children at ages 8-12 and 13-17 years. This lack of availability is more pronounced in some regions than others, which probably results from their policy, legislative and statutory frameworks.

Behavioral analysis of computer-administered vicarious exposure in agoraphobic subjects: the effect of personality on in-session treatment process

Pretreatment measures of personality and symptom levels in agoraphobic subjects (N = 18) were correlated with their behavior on an interactive computer simulation that provided vicarious exposure to a phobia of elevators. Behavior during treatment sessions was assessed via human-computer interactions (HCIs). Automated programs analyzed these interactions to provide detailed behavioral descriptions. All subjects engaged in vicarious exposure, but the extent of this varied eightfold. Vicarious exposure increased across treatment sessions, with a qualitative shift to a high-exposure routine of staying in the simulated elevator and repeatedly traveling the maximum number of floors. The amount of activity spent on traveling in the elevator increased from 43% to 62% across three treatment sessions. Correlations were observed between vicarious exposure behaviors and a number of subject characteristics including neuroticism and conscientiousness. We conclude that HCIs provide a detailed record of behavior during computer-administered treatment. Subjects demonstrate learning of exposure strategies across treatment sessions. Interindividual differences in behavior correlate with a number of pretreatment subject personality characteristics.

Depth perception of interfering periodic patterns: a possible contribution to disorientation on escalators

Incongruous and illusory depth cues, arising from 'interference patterns' produced by overlapping linear grids at the edges of escalator treads, may contribute to the disorientation experienced by some escalator users, which in turn may contribute to the causes of some of the many escalator accidents which occur. The apparent depth of the interference pattern from the viewer is analysed in terms of the cues deriving from size and viewer motion. Both of these cues support the depth of the target being infinite. Preliminary observations are reported which confirm this analysis. Remedies for the problem are suggested. The possible contribution of this illusion to disorientation on escalators, due to misjudgment of depth, is compared with another recently reported factor which is due to stereoscopic miscorrespondence of periodic targets.

Virus transport and infection evaluation in a passenger elevator with a COVID-19 patient

Contaminant transport and flow distribution are very important during an elevator ride, as the reduced social distancing may increase the infection rate of airborne diseases such as COVID-19. Studying the airflow and contaminant concentration in an elevator is not straightforward because the flow pattern inside an elevator changes dramatically with passenger movement and frequent door opening. Since very little experimental data were available for elevators, this investigation validated the use of computational fluid dynamics (CFD) based on the RNG k-∈ $$ \in $$ turbulence model to predict airflow and contaminant transport in a scaled, empty airliner cabin with a moving passenger. The movement of the passenger in the cabin created a dynamic airflow and transient contaminant dispersion that were similar to those in an elevator. The computed results agreed reasonably well with the experimental data for the cabin. The validated CFD program was then used to calculate the distributions of air velocity, air temperature, and particle concentration during an elevator ride with an index patient. The CFD results showed that the airflow pattern in the elevator was very complex due to the downward air supply from the ceiling and upward thermal plumes generated by passengers. This investigation studied different respiratory activities of the index patient, that is, breathing only, breathing, and coughing with and without a mask, and talking. The results indicated that the risk of infection was generally low because of the short duration of the elevator ride. If the index patient talked in the elevator, two passengers in the closest proximity to distance would be infected.

Developing Point-of-Decision Prompts to Encourage Airport Walking: The Walk to Fly Study

BACKGROUND

Point-of-decision prompts may be appropriate to promote walking, instead of using a mechanized mode of transport, such as a train, in airports. To our knowledge, no current studies describe the development of messages for prompts in this setting.

METHODS

In-person interviews were conducted with 150 randomly selected airport travelers who rode the train to their departure gate. Travelers reported various reasons for riding the train to their gate. They were asked about messages that would encourage them to walk. Exploratory factor analysis was conducted for reasons for riding the train. Confirmatory factor analysis was conducted for messages to encourage walking to the departure gate.

RESULTS

Travelers reported not knowing walking was an option (23.8%), seeing others riding the train (14.4%), and being afraid of getting lost (9.2%) as reasons for riding the train. Many indicated that directional signs and prompts promoting walking as exercise would encourage them to walk instead of riding the train.

CONCLUSIONS

Some reasons for riding the train in an airport may be modifiable by installing point-of-decision prompts. Providing directional signs to travelers may prompt them to walk to their gate instead of riding the train. Similar prompts may also be considered in other community settings.

Adoption of Major Housing Adaptation Policy Innovation for Older Adults by Provincial Governments in China: The Case of Existing Multifamily Dwelling Elevator Retrofit Projects

(1) Background: The housing environment is crucial to the health of older Chinese people and is becoming an urgent policy initiative. This study explores factors that facilitate or impede the adoption of policy innovation on major housing adaptation (HA) by Chinese provincial governments using the framework of policy innovation and diffusion theory. (2) Methods: This study constructs an event history dataset on HA policy related to elevator retrofitting in existing multifamily dwellings in China; the lack of elevators constitutes an insurmountable barrier in older adults’ daily lives in China. The hypotheses were tested by using a traditional event history analysis (EHA) model and a piecewise constant exponential (PCE) model, which is a modified EHA model. The dataset was summarized as “province-year” event history data on 30 Chinese provinces from 2008 to 2019. (3) Results: In addition to internal determinants (e.g., population aging level and financial dependency), diffusion mechanisms can significantly facilitate or impede the adoption of major HA policy innovation by provincial governments. Policy adoption by neighboring governments helps facilitate policy adoption by nonadopters, but policy adoption by subordinate city governments impedes provincial governments’ adoption of major HA policy innovation. (4) Conclusions: This study concludes that provincial governments’ adoption of major HA policy innovation should be given a higher policy priority. The central government can promote provincial governments’ adoption of major HA that primarily benefits older adults by using fiscal transfer payments and enhancing the legitimacy of such policy.

Evaluating the impact of a short bout of stair-climbing on creative thinking in a between-subjects pretest posttest comparison study

Recent studies have indicated potential links between short bouts of physical activity like stair-climbing and enhanced creative thinking. However, previous research featured limitations, such as using an uncommon 3 flights round-trip design and lacking baseline creative thinking evaluations. To rectify these limitations and build a more comprehensive understanding, the present study adopts a between-subjects pretest posttest comparison design to scrutinize the effects of ascending stair-climbing on both divergent and convergent thinking. 52 subjects underwent a pretest, followed by random assignment to one of four interventions: ascending stair-climbing for 2, 5, or 8 flights, or taking an elevator for 8 flights, before progressing to a posttest. The results revealed a notable improvement in convergent thinking, measured by the increased number of solved matchstick arithmetic problems (d = 1.165), for participants who climbed 2 flights of stairs compared to those who took the elevator. However, climbing 5 or 8 flights showed no such impact on convergent thinking, and stair-climbing, regardless of the number of flights, did not influence divergent thinking. These findings underscore the utility of brief stair-climbing as an accessible means to enhance convergent thinking in everyday settings, providing a nuanced insight into the relationship between physical activity and creative thinking processes.