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2. Experiences and perceptions of a 12-week combined exercise and dietary supplement program for individuals with knee osteoarthritis : a qualitative focus group studyTina Čeh, Jernej Završnik, Nejc Šarabon, Mirko Prosen, 2026, izvirni znanstveni članek Opis: Background Exercise program and dietary supplements are commonly used in the conservative management of knee osteoarthritis (KOA) and have both been shown to reduce pain and improve physical function. Combining these approaches may offer additive benefits or introduce specific adherence challenges from the patient perspective. The combination of structured exercise with dietary supplements remains underexplored, especially through qualitative approaches. This study aims to investigate the lived experiences, perceived benefits, challenges, and motivational factors among participants of a targeted exercise program combined with dietary supplementation. Methods A qualitative study design with three focus group was used to explore participants overall experiences, motivational factors, and barriers to participation immediately after program. The sample included 16 older adults with KOA (Kellgren–Lawrence grade 1–3, 14 women and 2 men). Two moderators facilitated each focus group using topic guide. Data were analysed using inductive thematic analysis. Results Six main themes were identified: (1) recognized effects of exercise, (2) motivators and barriers to exercise, (3) group exercise and its impact on daily life, (4) recognized health care limitations, (5) experiences and practices of dietary supplement use, and (6) perspectives on program continuation and expansion. Conclusions Participants’ experiences with the combined exercise and dietary supplementation program for KOA highlighted the importance of social support, professional guidance, and self-motivation. Barriers included physical limitations, time constraints, and psychological challenges, while reported benefits included reduced pain, improved mood, and enhanced social engagement. Participants’ tendency to perceive exercise and supplementation as separate components indicates that, in practice, combined interventions may function as parallel rather than integrated strategies unless explicitly framed and supported as a unified approach
Ključne besede: knee osteoarthritis, exercise program, dietary supplements, qualitative study, physical rehabilitation, patient experience, motivation
Objavljeno v RUP: 21.02.2026; Ogledov: 387; Prenosov: 1
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3. Disease severity affects knee range of motion but not strength deficits in knee osteoarthritis : a systematic review and meta-analysisManca Zupančič Opara, Nejc Šarabon, 2026, pregledni znanstveni članek Opis: Objectives: To compare knee range of motion and muscle strength between individuals with symptomatic knee osteoarthritis and healthy controls, and to assess how Kellgren–Lawrence grade and measurement protocols affect these outcomes.Methods: A systematic search of PubMed, Scopus, and Web of Science identified studies comparing knee flexion/extension range of motion or flexor/extensor strength between patients with knee osteoarthritis and controls. Risk of bias was assessed with Joanna Briggs Institute tools. Pooled mean and standardized mean differences with 95% confidence intervals were calculated using random-effects meta-analyses.Results: Thirty studies were included. Compared with healthy controls, individuals with knee osteoarthritis showed significantly reduced knee flexion [MD = 16.30°, 95%CI (11.40, 21.21)] and extension [MD = 4.25°, 95%CI (2.30, 6.19)], with greater flexion loss in advanced KL grades. Knee osteoarthritis participants also demonstrated significantly lower strength across all contraction types: isometric [extensors: SMD = 0.86, 95%CI (0.57, 1.14); flexors: SMD = 0.52, 95%CI (0.30, 0.74)], concentric [extensors: SMD = 1.07, 95%CI (0.65, 1.50); flexors: SMD = 0.77, 95%CI (0.43, 1.12)], and eccentric extensor strength. Strength deficits were consistent across Kellgren–Lawrence grades, knee joint angles, and angular velocities during testing.Conclusions: Individuals with symptomatic knee osteoarthritis present with marked reductions in knee range of motion and strength. While range of motion impairments worsen with disease severity, strength deficits are stable across Kellgren–Lawrence grades and measurement protocols. Given the very low to low certainty of evidence, results should be interpreted with caution. 1 Introduction
Ključne besede: osteoarthritis, knee, arthritis, risk factors, rehabilitation
Objavljeno v RUP: 18.02.2026; Ogledov: 372; Prenosov: 2
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5. Effects of eccentric training at long muscle length on architectural and functional characteristics of the hamstringsJan Marušič, Rok Vatovec, Goran Marković, Nejc Šarabon, 2020, izvirni znanstveni članek Opis: Hamstring strain injuries during sprinting or stretching frequently occur at long-muscle length. Yet, previous research has mainly focused on studying the effectiveness of eccentric hamstring strengthening at shorter muscle length on hamstring performance, morphology, and hamstring strain injury risk factors. Here, we evaluated the effects of 6-week eccentric hamstring training at long-muscle length on functional and architectural characteristics of the hamstrings. Healthy and injury-free participants (n = 40; age 23.7 % 2.5 years) were randomly assigned to control or intervention group. Training intervention consisted of 12 sessions with two eccentric hamstring exercises in a lengthened position. Outcome measures included isokinetic and isometric knee flexion peak torque, Nordic hamstring exercise peak torque, voluntary activation level, and countermovement jump performance. Ultrasonography was used to determine muscle thickness, pennation angle, and fascicle length of biceps femoris long head (BFlh). A significant time % group interaction effect was observed for all measured parameters except countermovement jump performance and muscle thickness. The training intervention resulted in increased concentric and eccentric knee flexion peak torque at 60°/s (d = 0.55-0.62, P = .02 and .03) and concentric peak torque at 180°/s (d = 0.99, P = .001), increased isometric knee flexion peak torque (d = 0.73, P = .008) and Nordic hamstring exercise peak torque (d = 1.19, P < .001), increased voluntary activation level (d = 1.29, P < .001), decreased pennation angle (d = 1.31, P < .001), and increased fascicle length (d = 1.12, P < .001) of BFlh. These results provide evidence that short-term eccentric hamstring strengthening at long-muscle length can have significant favorable effects on various architectural and functional characteristics of the hamstrings.
Ključne besede: biceps femoris, fascicle length, knee flexion torque, pennation angle, strength
Objavljeno v RUP: 07.08.2020; Ogledov: 6151; Prenosov: 76
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6. Economic evaluation of medical programmes in general hospitalsPatricia Blatnik, Štefan Bojnec, 2015, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: medicinski programi, vrednotenje, ekonomska analiza, stroški, evaluation of medical programmes, economic analysis, knee arthroscopy, costs, quality adjusted life-year
Objavljeno v RUP: 14.10.2015; Ogledov: 5684; Prenosov: 94
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