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Introduction The aim of the study is to show the differences between the measured and estimated values of resting energy expenditure and any changes occurring after the 6-month weight loss intervention program. Methods We included 33 healthy adults aged 25–49 years with an average body mass index 29.1±2.7 kg/m 2 for female and 29.8±2.8 kg/m2 for male. The measured resting energy expenditure was obtained by indirect calorimeter MedGem® Microlife and estimated resting energy expenditure by the Harris–Benedict equation, the Mifflin–St Jeor equation, the Owen equation, the Wright equation, and by the Tanita body composition analyser. All measurements and calculations were carried out before and after the 6-month intervention. Results were compared using paired t-tests. P value less than 0.05 was considered statistically significant. Results A comparison of the measured resting energy expenditure of female subjects with the estimated resting energy expenditure using the Harris–Benedict equation, the Mifflin–St Jeor equation and the Wright equation showed a statistically significant difference. A comparison of the measured resting energy expenditure of male subjects with the estimated resting energy expenditure using the Harris–Benedict equation and the Wright equation showed a statistically significant difference. There was a significant difference in the measured resting energy expenditure and estimated resting energy expenditure using Tanita. Conclusions We concluded that the most comparable equation for our sample was the Owen’s equation. After losing weight, the measured resting energy expenditure has decreased, which must be taken into account in further diet therapy.

Premature death, chronic disease, and productivity loss can be reduced with the help of programs that promote a healthy lifestyle. Workplace health promotion programs have been shown to be an efficient way of improving employee health. These can also benefit employers by improving retention, reducing worker turnover, and lowering healthcare costs. In Slovenia, a workplace health promotion program called “STAR-VITAL—Joint Measures for the Vitality of Older Workers” targeting small- and medium-sized enterprises has been ongoing since September 2017. We hypothesize that this workplace health promotion program will yield long-term health changes for the included employees and employers. Methods/Design: The manuscript presents a workplace health promotion program design that introduces some novel approaches and solutions to workplace health promotion program implementation. It also introduces a measurement of their effects that address the problem of low participation rates and the effectiveness of workplace health promotion programs, as follows: (1) the multifaceted and individualised approach to implementation, (2) customer relationship management (CRM) -based interaction management with program participants, and (3) impact evaluation based on employee health and labour market data observing both intermediate outcomes and the final outcomes based on national micro administrative data. Discussion: Although the novel approaches introduced with the STAR-VITAL program proved to be effective during the COVID-19 pandemic, they deserve the attention of scholars and practitioners. Further research is called for to further explore the potential of CRM in health promotion contexts, the effectiveness of multifaceted and individualised workplace health promotion program interventions, and micro administrative data-based impact evaluations. Conclusions: The STAR-VITAL program introduces several new approaches addressing the problem of low participation rates and the effectiveness of WHPPs. Further research is called for to discover and explore the potential of those novel approaches.

Background Premature death, chronic diseases, productivity loss and other social and economic concerns can be influenced by healthy lifestyle workplace promotion programs, including healthy nutrition habits. In Slovenia a project called >>STAR-VITAL-healthy ageing at workplace << has been going on since September 2017. Methods The survey results are based on an analysis of 805 respondents from 20 different small and middle sized enterprises in Slovenia. The survey was carried out via both a paper questionnaire and an online survey during the period from June 2019 to February 2020. The screening questionnaire was completed before interventions. We estimated the average score for the eight questions concerning nutritional habits. Results Nutritional habits are the following: 62% respondents eat three or more meals a day, 64% respondents eat vegetables each day, 59,8% respondents eat fruits each day, 31,9% respondents eat fish or see fruits at least once a week, 45,7% respondents eat whole wheats at least once a week, 54,1% respondents eat red meat not more than twice a week, 62,1% respondents eat fried food not more than three times a month and 79,1% respondents drink sweet drinks less than three times a week. The results on question >>What is the most common form of meal you eat while at work? << are the following: purchase meal at restaurant 45,3%, bring from home 32,7%, delivery/carry out 6,2%, do not eat 5,2%, other 4,7%, employer cafeteria 3,9% and vending machine 1,2%. Conclusions The results of our survey show that a significant percentage of the workers in Slovenia still has unhealthy nutritional habits. Assessment of nutritional habits before workplace promotion program interventions allow us to compare which combinations of interventions are the most effective. The results will indicate the strength and weakness of each intervention and how it could be improved. Key messages The population is growing old and chronic diseases increases, which is part of the bad nutritional habits. Healthy lifestile promotion is needed to improve quality of life. The workplace health promoting programs have been shown to be an efficient way of improving workerś health. Implementing promotional program of nutritional habits are proper for Slvenian enterprises.