Comprehensive Assessment of Functional and Psycho-emotional Indicators in Women of Various Ages Participating in Different Health-improvement Programs

Overview

This biomedical study will assess and compare functional and psycho-emotional indicators in women of different age groups who participate in Pilates, yoga, or Nirvana Fitness® programmes and women who do not participate in regular physical activity. The study will evaluate somatosensory, musculoskeletal, and respiratory function, musculoskeletal pain, body awareness, and psycho-emotional status. It will also examine associations between functional and psycho-emotional indicators. The study consists of two stages. The first stage will involve the translation, cross-cultural adaptation, and validation of the Nordic Musculoskeletal Questionnaire for use in Lithuania. The second stage will be a prospective observational study comparing the assessed indicators across age groups and health promotion programmes. The findings are expected to contribute to the identification of age-appropriate health promotion approaches for women and to inform strategies for maintaining health and functional capacity across the lifespan.

Women's health across the lifespan is influenced by interacting biological and sociocultural factors. Historically, the limited inclusion of women in biomedical research has reduced the applicability of clinical evidence to this population. Women's health encompasses physical, psychological, and social dimensions that jointly affect overall well-being and bodily function. Age-related hormonal changes are associated with an increased risk of chronic conditions, including hypertension, atherosclerosis, and osteoporosis. Sex-related differences are also evident in the musculoskeletal system: men generally have greater muscle mass and bone mineral density, whereas women more frequently experience musculoskeletal pain and may be at increased risk of early sarcopenia. Differences are additionally observed in the respiratory system, with certain chronic pulmonary diseases becoming increasingly prevalent and severe among women. The somatosensory system, particularly proprioception, plays an important role in balance and movement control and is associated with body awareness and psychological regulation. Depression and anxiety are more common among women and are influenced by both biological and sociocultural factors. Physical activity is an important modifiable factor that supports cardiovascular, metabolic, musculoskeletal, and respiratory function, as well as psycho-emotional well-being. It may also help reduce menopausal symptoms and the risk of chronic disease. Health promotion programmes such as yoga, Pilates, and Nirvana Fitness® may improve functional mobility and psychological well-being. However, further comparative research is needed to determine how participation in these programmes is associated with women's physical and psycho-emotional health across different age groups. Studies conducted in Lithuania have predominantly examined individual health promotion programmes. Comparative research is therefore needed to identify age-appropriate approaches that may support women's health and disease prevention. Study Design and Recruitment The study comprises two stages: the cross-cultural adaptation and validation of a questionnaire, followed by a prospective observational study. Participants will be recruited through advertisements published on Facebook, Instagram, and LinkedIn. Before enrolment, prospective participants will receive information about the purpose of the study, study procedures, potential benefits and risks, confidentiality, and their right to withdraw. Written informed consent will be obtained before any study-related procedures are performed. Stage 1 will involve the translation, cross-cultural adaptation, and validation of the Lithuanian version of the Nordic Musculoskeletal Questionnaire. Stage 2 will assess somatosensory, musculoskeletal, and respiratory system function, psycho-emotional status, and body awareness in women from different age groups. Women who already participate in selected health promotion programmes will be compared with women who do not regularly participate in such programmes. Participants will be classified into the health promotion programme group or the control group according to their existing physical activity habits, as specified in the eligibility criteria. Participants in the health promotion programme group will be further classified according to the programme practised: Pilates, yoga, or Nirvana Fitness®. Group classification will be performed by the principal investigator or a designated investigator who is a qualified physiotherapist holding a valid professional licence. No participant will be assigned to begin, discontinue, or change a health promotion programme for the purposes of this observational study.