AccScience Publishing / HPR / Online First / DOI: 10.36922/HPR026250134
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RESEARCH ARTICLE

Acute physiological and mood changes associated with a single 60-minute Nirvana Fitness session in young women

Robert Podstawski1* ,  Krzysztof Borysławski2 ,  Bożena Hinca3 ,  Attila Szabo4 ,  Emilia Bałdyga1 ,  Anna Podstawska5 ,  Aneta Omelan6 ,  Paweł Jastrzębski7
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1 Human Wellness Research Laboratory, Department of Physiotherapy, Faculty of Health Sciences, University of Warmia and Mazury in Olsztyn, Olsztyn, Warmian-Masurian Voivodeship , Poland
2 Faculty of Health Sciences, Angelus Silesius University of Applied Sciences in Wałbrzych, Wałbrzych, Lower Silesian Voivodeship , Poland
3 Department of Physical Education and Sport, University of Gdańsk, Gdańsk, Pomeranian Voivodeship , Poland
4 Department of Psychology and Health Management, Faculty of Health and Sport Sciences, Széchenyi István University, Győr, Győr-Moson-Sopron County , Hungary
5 Psychotherapy, Prevention, and Addiction Treatment Clinic, Olsztyn, Warmian-Masurian Voivodeship , Poland
6 Department of Tourism, Recreation, and Ecology, Faculty of Geoengineering, University of Warmia and Mazury, Olsztyn, Warmian-Masurian Voivodeship , Poland
7 Department of Emergency Medicine, Faculty of Health Sciences, University of Warmia and Mazury, Olsztyn, Warmian-Masurian Voivodeship , Poland
HPR, 026250134 https://doi.org/10.36922/HPR026250134
Received: 19 June 2026 | Revised: 1 September 2026 | Accepted: 4 September 2026 | Published online: 19 October 2026
© 2026 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
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Abstract

Background: Evidence regarding physiological and psychological changes associated with Nirvana Fitness (NF) in women remains limited.

Objective: This study examined physiological responses and mood changes before and after a single 60-minute NF session in young women.

Methods: The study included 105 female university students aged 18.1–23.0 years (mean age, 20.07 ± 1.14 years). We assessed physical activity levels using the Polish short version of the International Physical Activity Questionnaire. We measured anthropometric characteristics and body composition using bioelectrical impedance analysis before the training session, and we evaluated mood states before and after the session using the Profile of Mood States questionnaire.

Results: Participants demonstrated moderate physical activity levels and normal body mass index values, although body fat percentage was close to the upper reference range. The session was characterized by low-to-moderate physiological intensity (mean heart rate, 112.4 bpm; estimated energy expenditure, approximately 376 kcal), with low estimated oxygen uptake and respiratory responses. Significant pre–post changes in mood states were observed, including reductions in emotional tension, depression, anger, confusion, and fatigue, and an increase in vigor (all p < 0.001).

Conclusion: Immediate changes in self-reported mood states were observed after a single NF session; however, the single-arm pre–post design does not allow these changes to be attributed specifically to NF. The findings should therefore be considered preliminary, and controlled studies are needed to determine whether NF contributes to these changes in mood states in young women.

Graphical abstract
Keywords
Nirvana Fitness
Mood states
Physical activity
Young women
Physiological responses
Funding
None.
Conflict of interest
The authors declare no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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