scholarly journals The Applicability of the Poincaré Plot in the Analysis of Variability of Reaction Time during Serial Testing

2021 ◽  
Vol 18 (7) ◽  
pp. 3706
Author(s):  
Elena Ioana Iconaru ◽  
Manuela Mihaela Ciucurel ◽  
Luminita Georgescu ◽  
Mariana Tudor ◽  
Constantin Ciucurel
Keyword(s):  
Reaction Time ◽  
Cross Sectional Study ◽  
Repeated Testing ◽  
Poincaré Plot ◽  
Cross Sectional ◽  
Web Based ◽  
Mean Values ◽  
Serial Testing ◽  
Reported Health ◽  
The Relationship

(1) Background: This study aims to put into evince the relationship between the variability of the reaction time (RT) during repeated testing, expressed through indicators extracted by the Poincaré plot method, and the age of the participants, their self-reported health (SRH), and level of perceived anxiety. (2) Methods: The study was performed using computerized RT testing software. An observational cross-sectional study was performed on a group of 120 subjects (mean age 42.33 ± 21.12 years), sex ratio men to women 1.14:1. Data were processed through descriptive and inferential statistics. The Poincaré plot method was applied in the analysis of the RT series of data, by calculating the indicators SD1, SD2, SD1/SD2, and area of the fitting ellipse (AFE) (3) Results: We provided evidence of the excellent reliability of the web-based RT serial testing (Cronbach’s Alpha 0.991) with this sample group. Our results showed that age is an important predictor for mean values of RT, while SD1, SD2, and AFE indicators are for SRH (p < 0.01). (4) Conclusions: the variability of RT, expressed by the Poincaré plot indicators, reflects the health status rather than the aging of the subjects and is barely influenced by their level of anxiety.

Youth violence and mental health: repeating exposures

2017 ◽  
Vol 10 (3) ◽  
pp. 174-186 ◽  
Author(s):  
Manuel Ángel Oscós-Sánchez
Keyword(s):  
Mental Health ◽  
Youth Violence ◽  
Exposure To Violence ◽  
Cross Sectional Study ◽  
Original Research ◽  
Repeated Testing ◽  
Cross Sectional ◽  
Content Type ◽  
The Core ◽  
The Relationship

Purpose The purpose of this paper is to discover and describe salient repeating and less common features of the recent medical literature about youth violence as it relates to mental health. How the relationship between youth violence and mental health is commonly conceptualized, investigated, and reported is summarized. Negative cases, unique approaches, and concepts are discussed. Design/methodology/approach An Ovid Medline literature search was conducted with the search parameters of “adolescent and violence” and “psychiatry or psychology or mental health.” In total, 66 articles met inclusion criteria and were analyzed using grounded theory procedures and techniques. Findings In all, 49 articles were reports of original research, 14 were literature reviews, and three were editorials. The articles included discussions of youth violence and mental health among young people in 49 countries. Most original research used cross-sectional designs that tested and supported the core hypothesis that greater exposure to violence is associated with more mental health issues. The relationship is robust even though characterizations of “exposure to violence” and “mental health” were highly variable. Meta-analytic and intervention studies were rare. Originality/value The core feature of the last decade of medical research has been the repeated testing and confirmation that a relationship between exposure to violence and mental health exists. Future youth violence research should move beyond continuing to test this hypothesis with cross-sectional study designs.

scholarly journals Associations Between Commercial App Use and Physical Activity: Cross-Sectional Study (Preprint)

2019 ◽  
Author(s):  
Jasmine Maria Petersen ◽  
Eva Kemps ◽  
Lucy K Lewis ◽  
Ivanka Prichard
Keyword(s):  
Physical Activity ◽  
Social Networking ◽  
Population Level ◽  
Physical Activity Behavior ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Web Based ◽  
The Social ◽  
Social Components ◽  
The Relationship

BACKGROUND In today’s society, commercial physical activity apps (eg, Fitbit and Strava) are ubiquitous and hold considerable potential to increase physical activity behavior. Many commercial physical activity apps incorporate social components, in particular app-specific communities (allowing users to interact with other app users) or the capacity to connect to existing social networking platforms (eg, Facebook or Instagram). There is a growing need to gain greater insights into whether commercial physical activity apps and specific components of these apps (social components) are beneficial in facilitating physical activity. OBJECTIVE This study aimed to examine the relationship between the use of commercial physical activity apps and engagement in physical activity. The social components of commercial physical activity apps (app-specific communities and existing social networking platforms) were also explored. This involved isolating specific features (eg, sharing, providing, and receiving encouragement, comparisons, and competitions) of app-specific communities and existing social networking platforms that were most valuable in facilitating physical activity. METHODS A cross-sectional web-based survey was conducted. Participants were 1432 adults (mean age 34.1 years, 1256/1432, 88.00% female) who completed measures assessing physical activity, the use of commercial physical activity apps, and engagement with app-specific communities and existing social networking platforms. RESULTS Overall, 53.14% (761/1432) of the sample reported engaging with a commercial physical activity app. The most commonly used apps were Fitbit (171/761, 22.5%), Strava (130/761, 17.1%), and Garmin (102/761, 13.4%). The use of physical activity apps was significantly associated with physical activity. Notably, the use of app-specific communities and existing social networking platforms facilitated significantly greater engagement in physical activity. The features of app-specific communities that were most beneficial in promoting engagement in physical activity were providing encouragement to a partner, receiving encouragement from close friends and family, and engaging in competitions with members of public app-specific communities. In relation to existing social networking platforms, sharing physical activity posts predicted engagement in physical activity. CONCLUSIONS The findings indicate that app-specific communities and existing social networking platforms are components of apps that are fundamental in facilitating physical activity. They further suggest that commercial physical activity apps afford high population level reach and hold great potential to promote engagement in physical activity, an important public health consideration.

scholarly journals Associations Between Commercial App Use and Physical Activity: Cross-Sectional Study

10.2196/17152 ◽  
2020 ◽  
Vol 22 (6) ◽  
pp. e17152 ◽  
Author(s):  
Jasmine Maria Petersen ◽  
Eva Kemps ◽  
Lucy K Lewis ◽  
Ivanka Prichard
Keyword(s):  
Physical Activity ◽  
Social Networking ◽  
Population Level ◽  
Physical Activity Behavior ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Web Based ◽  
The Social ◽  
Social Components ◽  
The Relationship

Background In today’s society, commercial physical activity apps (eg, Fitbit and Strava) are ubiquitous and hold considerable potential to increase physical activity behavior. Many commercial physical activity apps incorporate social components, in particular app-specific communities (allowing users to interact with other app users) or the capacity to connect to existing social networking platforms (eg, Facebook or Instagram). There is a growing need to gain greater insights into whether commercial physical activity apps and specific components of these apps (social components) are beneficial in facilitating physical activity. Objective This study aimed to examine the relationship between the use of commercial physical activity apps and engagement in physical activity. The social components of commercial physical activity apps (app-specific communities and existing social networking platforms) were also explored. This involved isolating specific features (eg, sharing, providing, and receiving encouragement, comparisons, and competitions) of app-specific communities and existing social networking platforms that were most valuable in facilitating physical activity. Methods A cross-sectional web-based survey was conducted. Participants were 1432 adults (mean age 34.1 years, 1256/1432, 88.00% female) who completed measures assessing physical activity, the use of commercial physical activity apps, and engagement with app-specific communities and existing social networking platforms. Results Overall, 53.14% (761/1432) of the sample reported engaging with a commercial physical activity app. The most commonly used apps were Fitbit (171/761, 22.5%), Strava (130/761, 17.1%), and Garmin (102/761, 13.4%). The use of physical activity apps was significantly associated with physical activity. Notably, the use of app-specific communities and existing social networking platforms facilitated significantly greater engagement in physical activity. The features of app-specific communities that were most beneficial in promoting engagement in physical activity were providing encouragement to a partner, receiving encouragement from close friends and family, and engaging in competitions with members of public app-specific communities. In relation to existing social networking platforms, sharing physical activity posts predicted engagement in physical activity. Conclusions The findings indicate that app-specific communities and existing social networking platforms are components of apps that are fundamental in facilitating physical activity. They further suggest that commercial physical activity apps afford high population level reach and hold great potential to promote engagement in physical activity, an important public health consideration.

scholarly journals Association between serum alanine and aspartate aminotransferase and blood pressure: a cross-sectional study of Chinese freshmen

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lijun Zhu ◽  
Zhengmei Fang ◽  
Yuelong Jin ◽  
Weiwei Chang ◽  
Mengyun Huang ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Cardiovascular Events ◽  
Total Population ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Mean Values ◽  
The Mean ◽  
The Relationship ◽  
Strong Linear Relationship

Abstract Background High blood pressure is a well-recognized risk factor for cardiovascular events, and the incidence of hypertension is increasing among young people. This study investigated the relationship between ALT and AST levels and hypertension among freshmen in China. Methods This cross-sectional study was conducted in the Anhui Province from September to November 2018. A total of 3114 freshmen underwent a physical examination including testing of biochemical indicators and a standardized questionnaire. Results The overall prevalence of elevated ALT and AST were 6.8% and 2.3% among freshmen. The mean ALT and AST levels were higher in males (22.59 ± 21.98 vs.12.62 ± 10.30 U/L; 23.55 ± 12.24 vs. 20.02 ± 5.75 U/L, respectively). The prevalence of hypertension was significantly higher in men (16.1%) than in women (1.9%). The mean values of BMI, SBP, DBP, TC, TG, and LDL-C were found to be increased with elevated levels of serum ALT and AST in the quartiles (P for trend < 0.05). After adjusting for covariates, the risk of hypertension was significantly higher in the highest ALT quartile than in the lowest quartile (OR (95% CI) of 1.681 (1.028, 2.751) in males; 2.802 (1.102, 7.124) in females). A strong linear relationship was found between serum ALT levels and the odds of hypertension after adjustment for potential confounders only in total population and females (P for trend < 0.05). Conclusions These findings suggest that ALT level is significantly associated with hypertension both in male and female freshmen.

Coping Style as a Mediator of the Relationship Between Depressive Symptoms and Deliberate Self-Harm

Crisis ◽  
2011 ◽  
Vol 32 (5) ◽  
pp. 272-279 ◽  
Author(s):  
Allison S. Christian ◽  
Kristen M. McCabe
Keyword(s):  
Depressive Symptoms ◽  
Undergraduate Students ◽  
Cross Sectional Study ◽  
Self Report ◽  
Hierarchical Regression ◽  
Cross Sectional ◽  
Deliberate Self Harm ◽  
Self Blame ◽  
Self Harm ◽  
The Relationship

Background: Deliberate self-harm (DSH) occurs with high frequency among clinical and nonclinical youth populations. Although depression has been consistently linked with the behavior, not all depressed individuals engage in DSH. Aims: The current study examined maladaptive coping strategies (i.e., self-blame, distancing, and self-isolation) as mediators between depression and DSH among undergraduate students. Methods: 202 students from undergraduate psychology courses at a private university in Southern California (77.7% women) completed anonymous self-report measures. Results: A hierarchical regression model found no differences in DSH history across demographic variables. Among coping variables, self-isolation alone was significantly related to DSH. A full meditational model was supported: Depressive symptoms were significantly related to DSH, but adding self-isolation to the model rendered the relationship nonsignificant. Limitations: The cross-sectional study design prevents determination of whether a casual relation exists between self-isolation and DSH, and obscures the direction of that relationship. Conclusions: Results suggest targeting self-isolation as a means of DSH prevention and intervention among nonclinical, youth populations.

IDENTIFIKASI SERTA HUBUNGAN KONSTRUKSI SUMUR GALI TERHADAP KANDUNGAN COLIFORM PADA AIR SUMUR GALI DI DUSUN JIKEN KABUPATEN LOMBOK TIMUR

2019 ◽  
Vol 7 (2) ◽  
pp. 115
Author(s):  
Dini Yuliansari
Keyword(s):  
Cross Sectional Study ◽  
Coliform Bacteria ◽  
Well Water ◽  
Chi Square ◽  
Cross Sectional ◽  
Content Variable ◽  
Chi Square Test ◽  
Dug Wells ◽  
Dug Well ◽  
The Relationship

The well is one of the source water used for bathing, washing, and drinking by the citizens in Jiken Hamlet, Rarang Village, Terara Sub-District. Poor dug well construction conditions can affect the amount of coliform bacteria contained in the dug well water. The purpose of this study is to identify the construction of dug wells and the content of coliform bacteria in dug well water and determine the relationship between dug well construction and the content of coliform bacteria. This research is analytic with a cross sectional study design. The results were obtained from 11 samples of dug wells which were observed in construction and the coliform content was known that all samples did not requirements as good dug well construction. Coliform content test results showed that as many as 5 dug well water samples did not pass the clean water quality standards. The results of data analysis with the chi-square test variable construction of dug wells with coliform content variable  showed 0,172 > 0,05, then the concluded is the dug well not suitable to use by people in that area as a source of water for daily needs.

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