Low heart rate variability (HRV) is related to health problems that are known reasons for sick-leave or early retirement. A 1-minute-protocol could allow large scale HRV measurement for screening of health problems and, potentially, sustained employability. Our objectives were to explore the association of HRV with measures of health. Cross-sectional design with 877 Dutch employees assessed during a Workers’ Health Assessment. Personal and job characteristics, workability, psychological and mental problems, and lifestyle were measured with questionnaires. Biometry was measured (BMI, waist circumference, blood pressure, glucose, cholesterol). HRV was assessed with a 1-minute paced deep-breathing protocol and expressed as mean heart rate range (MHRR). A low MHRR indicates a higher health risk. Groups were classified age adjusted for HRV and compared. Spearman correlations between raw MHRR and the other measures were calculated. Significant univariable correlations (p < 0.05) were entered in a linear regression model to explore the multivariable association with MHRR. Age, years of employment, BMI and waist circumference differed significantly between HRV groups. Significant correlations were found between MHRR and age, workability, BMI, waist circumference, cholesterol, systolic and diastolic blood-pressure and reported physical activity and alcohol consumption. In the multivariable analyses 21.1% of variance was explained: a low HRV correlates with aging, higher BMI and higher levels of reported physically activity. HRV was significantly associated with age, measures of obesity (BMI, waist circumference), and with reported physical activity, which provides a first glance of the utility of a 1-minute paced deep-breathing HRV protocol as part of a comprehensive preventive Workers’ Health Assessment.Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creat ivecommons .org/licen ses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate redit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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Low heart rate variability (HRV) is related to health problems that are known reasons for sick-leave or early retirement. A 1-minute-protocol could allow large scale HRV measurement for screening of health problems and, potentially, sustained employability. Our objectives were to explore the association of HRV with measures of health. Cross-sectional design with 877 Dutch employees assessed during a Workers’ Health Assessment. Personal and job characteristics, workability, psychological and mental problems, and lifestyle were measured with questionnaires. Biometry was measured (BMI, waist circumference, blood pressure, glucose, cholesterol). HRV was assessed with a 1-minute paced deep-breathing protocol and expressed as mean heart rate range (MHRR). A low MHRR indicates a higher health risk. Groups were classified age adjusted for HRV and compared. Spearman correlations between raw MHRR and the other measures were calculated. Significant univariable correlations (p < 0.05) were entered in a linear regression model to explore the multivariable association with MHRR. Age, years of employment, BMI and waist circumference differed significantly between HRV groups. Significant correlations were found between MHRR and age, workability, BMI, waist circumference, cholesterol, systolic and diastolic blood-pressure and reported physical activity and alcohol consumption. In the multivariable analyses 21.1% of variance was explained: a low HRV correlates with aging, higher BMI and higher levels of reported physically activity. HRV was significantly associated with age, measures of obesity (BMI, waist circumference), and with reported physical activity, which provides a first glance of the utility of a 1-minute paced deep-breathing HRV protocol as part of a comprehensive preventive Workers’ Health Assessment.Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creat ivecommons .org/licen ses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate redit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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Video was used in a variety of formats during a third year elective Inholland course ‘Levensbeschouwing’ at the Faculty Onderwijs en Innovatie (education and innovation) in Amstelveen. From April to June (2017), 30 part-time and full-time students on the Tweedegraads Leraren Opleiding chose to follow the course for the ten week study period. Students used a variety of video formats to support and enhance their learning process. This research evaluates how the didactic embedding of video supported the teaching and learning on the course. The objective of the research was to gain insight into the ways in which video supports the learning and teaching process in the course and into the perceived practicality and effectiveness of this video support. The research examined how video was integrated into the course structure, how students and lecturers perceived the practicality of the use of video, and whether they considered it effective. The conversational framework of Laurillard (2002), was used as a framework in which to examine the interaction between students and teachers at the conceptual and application level. An overview was made of the different forms of videos used during the course (both teacher and student generated), how they were viewed and the value of them to the students. A survey was collected on the last day of the course in which students could share feedback on the ways in which video had contributed to their learning process. At the end of the course, a group interview was held with six student representatives (one from each group) and with the lecturers on the course to collect additional qualitative feedback on how video contributed to the learning process.
“Wij kunnen niet meer garanderen dat bij toekomstige woningen drinkwater beschikbaar is, terwijl wij nu al nee moeten verkopen aan bedrijven voor nieuwe aansluitingen’, aldus drinkwaterbedrijf Vitens, hetgeen duidelijk het probleem of beter de uitdaging beschrijft, waarvoor wij als Nederland staan. 1. Toenemende waterschaarste in Nederland: waterschaarste is niet langer een probleem alleen geassocieerd met warme en droge landen, maar ook Nederland krijgt te maken met watertekorten, en de kans hierop wordt steeds groter. 2. Onderzoek naar alternatief watergebruik: de testcase stelt voor alternatieve waterbronnen te onderzoeken om aan de toenemende vraag naar water te voldoen: het hergebruik van afvalwater, zoals water uit douches en wastafel, voor het doorspoelen van toiletten. 3. Innovatieve technologieën voor waterzuivering: De testcase is gebaseerd op een geavanceerd proces voor waterzuivering, inclusief verschillende stappen zoals skimming, zandfiltratie, ultrafiltratie en desinfectie met UV-straling. Dit proces zorgt ervoor dat het gerecyclede water geschikt is voor gebruik als spoelwater voor toiletten. 4. Testen van de technologie op festivals en andere locaties: de installatie gaat getest worden op festivals met campingfaciliteiten, waar veel water wordt gebruikt. Dit biedt een praktische gelegenheid om de haalbaarheid en effectiviteit van het systeem te beoordelen. 5. Potentiële besparingen en voordelen: met deze installatie kan tot 40% water bespaard worden en kan een aanzienlijk deel van de warmte van het douchewater worden teruggewonnen. Dit leidt tot aanzienlijke milieuvoordelen en kostenbesparingen. Met deze installatie kan 50 m3 water gezuiverd worden tot wc spoelwater, waarmee 8.333 boodschappen weggespoeld kunnen worden. Tevens wordt na zuivering de warmte uitgewisseld voor weer een warme douche. Daarmee kan bijvoorbeeld al het douche water van badhuis 6.01 van de Zwarte Cross volledig hergebruikt worden. Al met al een veelbelovende concept om de uitdagingen van waterschaarste op te lossen en duurzaam watergebruik in Nederland te stimuleren.
