Original scientific paper
https://doi.org/10.51680/ev.38.2.3
The use of the Delphi method in the creation of the SERVQUAL model for measuring the quality of services in fitness clubs
Milijanka C. Ratković
orcid.org/0000-0001-7946-354X
; University Union – Nikola Tesla, Faculty of Sport, Belgrade, Serbia
*
Slobodan Adžić
; University Union – Nikola Tesla, Faculty of Sport, Belgrade, Serbia
Dragan D. Tomašević
; Association for Recreation and Fitness of Serbia, Belgrade, Serbia
Andrijana Kos Kavran
orcid.org/0000-0002-1441-0321
; Međimurje University of Applied Sciences, Čakovec, Croatia
* Corresponding author.
Abstract
Purpose: This study aims to explore the applicability of the Delphi method in developing a SERVQUAL model for evaluating service quality in the Serbian fitness clubs, while also providing a practical tool for this emerging fitness market. Methodology: Building upon established SERVQUAL frameworks, a three-round Delphi process was conducted with 14 experienced fitness professionals from Serbia. Participants assessed and refined an initial 33-item questionnaire structured around the five SERVQUAL dimensions. The study applied strict consensus criteria and used statistical measures including the Shapiro-Wilk test, interquartile range (IQR), and boxplot analysis to validate the reliability and internal consistency of the instrument across iterations. Results: The final model consists of 25 statements and demonstrates a high level of adaptability of the SERVQUAL framework to specific needs of the Serbian fitness market, while maintaining theoretical consistency. Conclusion: The study confirms the Delphi method as an efficient tool for constructing reliable service quality measurement instruments in fragmented and under-researched markets. The resulting SERVQUAL model holds both methodological and practical value. As the Serbian fitness industry continues to grow, this validated instrument offers stakeholders a valuable basis for quality enhancement.
Keywords
Delphi method; research methodology; SERVQUAL model; fitness industry; service quality
Hrčak ID:
342183
URI
Publication date:
22.12.2025.
Visits: 372 *