1. Applying principal component analysis to identify underlying factors of key performance indicators from microsensor data in basketball gamesFilip Ujaković, Žiga Kozinc, Jernej Pleša, Nejc Šarabon, 2026, izvirni znanstveni članek Opis: The present study applied Principal Component Analysis (PCA) to complex microsensor data from 28 elite professional male basketball players across 122 games (1205 player/game samples) during two basketball seasons to reduce data dimensionality and identify underlying factors related to player load and movement intensity. External load was quantified using T7 Catapult monitoring devices, capturing 18 inertial measurement unit (IMU)-derived variables. PCA with varimax orthogonal rotation successfully extracted four distinct principal components (PC) with eigenvalues >1, collectively explaining 77.95% of the total variance. These components were interpreted as: PC 1 (33.43% variance), dominated by high-intensity acceleration and change of direction and representing high-intensity linear and multi-directional movements; PC 2 (19.27% variance), defined by deceleration measures, reflecting eccentric braking performance; PC 3 (15.49% variance) capturing overall accumulated mechanical workload; and PC 4 (9.76% variance) representing jumping frequency. In conclusion, PCA effectively reduced 18 highly correlated microsensor variables into four distinct, uncorrelated factors that encapsulate the main physical demands of elite basketball game-play, providing a more pragmatic and holistic framework for performance interpretation and subsequent tailoring of training prescription and monitoring over time. The extraction of these four factors provides a diagnostic framework for load profiling in elite basketball; however, as these results originate from a single-team observational design, future research is required to confirm the cross-contextual stability of this mechanical structure.
Ključne besede: basketball, measurement, loading
Objavljeno v RUP: 20.09.2026; Ogledov: 282; Prenosov: 11
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2. A systematic review and evaluation of measurement instruments assessing the needs, wellbeing, and living environments of older adultsMateja Erce Paoli, Dean Lipovac, Michael David Burnard, 2025, pregledni znanstveni članek Opis: Understanding the built environment’s impact on older adults’ wellbeing necessitates the identification of high-quality measures that capture environmental properties, wellbeing, and needs. Literature searches were conducted to identify instruments that measure (a) objective environmental properties, (b) wellbeing, (c) needs, and (d) environmental perception, which were evaluated using the COSMIN checklist. Another literature search was conducted to explore which instruments are used in studies examining objective and perceived qualities of the environment in relation to wellbeing. Of the 54 instruments evaluated, most showed strong content or construct validity, but weak or unreported test-retest reliability. Structural validity and internal consistency tended to be satisfactory in instruments assessing wellbeing and the intersection of environment and wellbeing. Instruments evaluating needs and the perceived environment generally had poor results in our evaluation. Our review of studies assessing both perceived and objective built environments alongside wellbeing indicates a lack of consistent use of validated instruments for older adult populations. We have identified instruments in each category with mostly sufficient psychometric properties, while the rest require improvement, particularly in terms of structural validity and reliability. Environment evaluation instruments mainly focus on outdoor spaces, leaving indoor spaces underrepresented in literature.
Ključne besede: ageing, questionnaire, objective measurement, subjective evaluation, psychometric properties
Objavljeno v RUP: 03.12.2025; Ogledov: 1149; Prenosov: 14
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3. Reliability of postural sway measures during single-leg stance : a analysis using conventional and complementary error metricsŽiga Kozinc, Aurora Kuliqi, Iza Obal, 2025, izvirni znanstveni članek Opis: This study examined the test–retest reliability of postural sway measures during single-leg stance in healthy adults. Forty-eight participants performed three 30-s barefoot trials across two sessions separated by 3–5 days, using a force platform to derive eight center of pressure (CoP) variables. Reliability was assessed using conventional reliability metrics (intraclass correlation coefficient (ICC), typical error (TE), coefficient of variation (CV), and minimal detectable change (MDC)), as well as recently suggested complementary indices (mean absolute error (MAE) and mean absolute percentage error (MAPE)). Most CoP-derived variables showed good relative reliability, with ICCs ranging from 0.71 to 0.86. Sway velocity and frequency-based measures were the most consistent (e.g., sway velocity AP: ICC = 0.85), while sway area showed higher variability (ICC = 0.71, MAPE = 20.1%). Systematic improvements were observed between sessions, particularly for sway velocity (all p < 0.001) and area (p = 0.002). Absolute error metrics such as MAE and MAPE provided additional insight into individual-level variability, often exceeding values indicated by CV. The findings support the use of single-leg CoP measures in research and clinical assessments but highlight the need for careful interpretation of reliability based on both relative and absolute indices.
Ključne besede: reliability, center of pressure, balance assessment, measurement error, force platform
Objavljeno v RUP: 23.08.2025; Ogledov: 1754; Prenosov: 35
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6. Chemical and appearance changes of wood due to artificial weathering - dose-response modelMarta Petrillo, Jakub Michal Sandak, Paolo Grossi, Anna Malgorzata Sandak, 2019, izvirni znanstveni članek Ključne besede: wood weathering, dose-response model, multi-sensor measurement, near infrared, colour, gloss
Objavljeno v RUP: 13.02.2019; Ogledov: 5405; Prenosov: 185
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8. Managing sustainable profitAleksander Janeš, Armand Faganel, 2015, objavljeni znanstveni prispevek na konferenci Ključne besede: management, odnosi, dolgoročna stabilnost, merjenje uspešnosti, učinkovitost, trajnostna rast, causal relations, error correction model, long term stability, performance measurement system, short term dynamic, strategy fulfilment, sustainable growth
Objavljeno v RUP: 03.04.2017; Ogledov: 8955; Prenosov: 98
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