Nejc Sarabon

Nejc Sarabon
University of Primorska | UP · Faculty of Health Sciences (FVZ)

PhD

About

293
Publications
150,128
Reads
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2,722
Citations
Additional affiliations
October 2010 - present
University of Primorska
Position
  • Professor (Associate)
Description
  • Exercise Therapy Motor Control Basics of Strength Training and Conditioning Neuromuscular Functions of the Trunk and Spine Health
August 2010 - present
Ludwig Boltzmann Institute Of Electrical Stimulation
Ludwig Boltzmann Institute Of Electrical Stimulation
Position
  • External research collaborator
May 2010 - present
S2P, Science to Practice, Ltd
S2P, Science to Practice, Ltd
Position
  • Managing Director, Head of Research
Education
October 2000 - April 2005
University of Ljubljana
Field of study
  • kinesiology
October 1997 - May 2002
University of Ljubljana
Field of study
  • physiotherapy
October 1996 - July 2000
University of Ljubljana
Field of study
  • Strength and Conditioning

Publications

Publications (293)
Article
An abundance of information can be found in the scientific literature regarding the bilateral deficit (BLD) in different contraction types, including its possible underlying mechanisms. On the other hand, studies on the relationship between BLD and athletic performance have only begun to emerge in recent years. The purpose of this review article is...
Article
Background: Adequate school furniture is important to prevent musculoskeletal discomfort among students. Objective: The aim of the study was to assess the suitability of school furniture compared to body dimensions of students. Methods: A cross-sectional study included a total of 442 students from primary school, secondary school, and universi...
Article
This study aimed to determine the within- and between-session reliability of different variables collected during the starting block phase with the KiSprint force starting block and to identify the number of trials that maximise the reliabil- ity of the measurement. Thirty high-level sprinters (23 men and 7 women) completed two sessions separated b...
Article
Full-text available
Background The possibility to selectively assess the force exerted by each leg during bilateral jumps has allowed sport scientists to explore inter-leg asymmetries, this metric being a rich source of research due to its potential applications to improve sports performance and reduce the risk of injury. The purpose of this study was to explore the r...
Article
Full-text available
The force-velocity (F-v) relationship has been proposed as a biomechanical characteristic to comprehensively evaluate neuromuscular capabilities within different tasks such as vertical jumping, sprinting and bench pressing. F-v relationship during flywheel (FW) squats was already validated, however, it was never compared to F-v profile of vertical...
Article
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Resistance exercise (RE) remains underused in cardiac rehabilitation; therefore, there is insufficient evidence on safety, feasibility, and hemodynamic adaptations to high-load (HL) and low-load (LL) RE in patients with coronary artery disease (CAD). This study aimed to compare the safety, feasibility of HL-RE and LL-RE when combined with aerobic e...
Article
[Main text in Slovene] Aging is a complex multidimensional process that manifests differently in each individual. The process of ageing is characterized by many biological changes, which are reflected in weight loss, loss of muscle strength and power, loss of movement functionality and cognitive decline. These changes reduce physiological resilienc...
Article
Ultrasound imaging is widely used in scientific research, as well as in the clinical practice, to assess morphological and mechanical properties of muscles and tendons. It also has applications in elite sport, for assessing training adaptations and for the identification of structural anomalies. Shear wave elastography is being increasingly used in...
Article
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The aim of our study was to assess eccentric-exercise-induced changes in passive knee joint torque, passive knee joint stiffness and shear modulus at of the hamstring muscles. We hypothesized that eccentric exercise would elicit an increase in all outcomes. Fourteen healthy volunteers (age = 25.5±4.7 years) performed eccentric exercise protocol. Be...
Article
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Augmented feedback (provided by an external source) has been commonly used by practitioners who are introducing or re-educating movement patterns as a valuable tool of instruction. This study aimed to evaluate the effects of real-time visual kinetic feedback on a horse-riding coaching session. Sixteen riders volunteered to take part in this study....
Article
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Over the past decade, force-velocity (F-v) profiling has emerged as a promising tool for assessing neuromuscular capacity to design individually tailored interventions in diverse populations. To date, a limited number of studies have addressed the optimization of the linear method for measuring F-v profiles of single-joint isokinetic movements. We...
Article
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Background The ability to perform a quick and rapid change of direction (CoD) is an important determinant of success in a variety of sports. Previous studies have already highlighted that eccentric strength is a dominant predictor of CoD. However, these studies evaluated eccentric strength through a limited number of outcome measures and used small...
Conference Paper
The purpose of this paper is to present the findings of a large literature review, conducted to obtain reference data for isometric knee extension and flexion strength through meta-analysis. Our analysis included 411 studies, with a total of 13893 participants (8788 adults from the general population, 3279 older adults, 1826 athletes and 359 childr...
Conference Paper
Introduction: Evaluation of the force-velocity-power (FVP) relationship has recently been established as a potentially useful method for monitoring athletes’ performance and designing training programs. The existing literature is ambiguous regarding the relationship between the profile F-V-P in single-joint and multi-joint movements. The main objec...
Article
Full-text available
Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Slovenian Research Agency Background Despite high levels of sedentary behaviour (SB) in patients with coronary artery disease (CAD), there is still limited evidence on the efficacy of multimodal exercise interventions combined with phy...
Article
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Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Slovenian Research Agency Background The combination of resistance training (RT) and aerobic training (AT) was shown to be superior compared to AT, although most studies applied only low-loads (LL) to moderate-loads in RT. Therefore, i...
Article
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Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Slovenian Research Agency Background Resistance training (RT) is an adjunct exercise therapy to aerobic training (AT) in cardiac rehabilitation, but it remains unknown whether the dose-dependent relationship between RT load (high load...
Article
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The COVID-19 measures have unfavourably affected the movement behaviours of youth. The aim of this study was to explore the impact of online-schooling during COVID-19 on device-measured sleep (SL), sedentary behaviour (SB), light physical activity (LPA), and moderate-vigorous physical activity (MVPA) among high school students. A total of 51 studen...
Article
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Sleep, sedentary behaviour (SB), and physical activity are among key behavioural determinants of health. There is a need to evaluate questionnaires that capture movement behaviours across the full 24-h day. The aim of this study was to examine the measurement properties of the Daily Activity Behaviours Questionnaire (DABQ), a novel questionnaire (w...
Article
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The effects of eccentric exercise (ECC) in older adults have received limited scientific attention, considering the ample evidence for its effectiveness in general and athletic populations. The purpose of this paper is to review the effects of ECC exercise modalities versus traditional or concentric (CON) exercise on muscle strength, body compositi...
Article
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When humans perform isometric ballistic contractions of different intensities, a strong linear relationship is observed between peak force and peak rate of force development. The slope of this relationship, termed the rate of force development scaling factor (RFD-SF), has been proposed as a measure of neuromuscular quickness of submaximal contracti...
Article
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Prolonged trunk flexion is known to affect passive and active stabilization of the trunk. Previous studies have evaluated changes in spinal range of motion, muscle activity and reflex behavior induced by prolonged trunk flexion, whereas the effect on sitting postural control is vastly underexplored. In this study, we compared the effects of support...
Article
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Patellofemoral pain (PFP) is a frequent knee condition. The aim of this study was to investigate strength, flexibility and postural control in people with and without PFP. Fifty-five participants between 14 and 54 years of age (PFP = 18, control group = 37) were included. Strength and flexibility for all trunk, hip, knee and ankle muscle groups wer...
Article
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OBJECTIVE: The aim of this study was to explore patients’ experience of patellofemoral pain (PFP), in order to help improve the mutual understanding between the patient and the physiotherapist and consequently enhance the efficacy of treatment. METHODS: A qualitative study design with focus groups was used to explore patient experience prior to the...
Article
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In 2013 we presented results showing that at the histological level lifelong increased physical activity promotes reinnervation of muscle fibers in aging muscles. Indeed, in muscle biopsies from 70-year old men with a lifelong history of high-level physical activity, we observed a considerable increase in fiber-type groupings (F-TG), almost exclusi...
Article
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Jumping performance is one of the key components of volleyball game, thus evaluating jumping ability through different biomechanical variables offers opportunity for performance optimization. The aim of this study was to assess the associations between reactive strength index (RSI), reactive strength index modified (RSImod) and approach jump perfor...
Article
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This study aimed to determine if there is a difference in postural stability in highly trained adolescents and young adult athletes regarding sex and sport. The participants were young athletes (n = 464) from seven different sports. We considered the center of pressure (CoP) velocity (total, anterior–posterior (AP) and medial–lateral (ML)), CoP amp...
Article
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This study aimed to determine the interrater and intrarater reliability of EasyForce dynamometer for assessing shoulder, knee, and hip muscle strength in healthy young adults. Shoulder, knee, and hip maximal isometric strength were measured using the EasyForce in healthy adults (11 women and 12 men). Three repetitions of shoulder internal rotation,...
Article
Full-text available
We assessed the association between bilateral deficit (BLD) in countermovement jump (CMJ) and change of direction (CoD) performance, CoD deficit, linear sprinting and approach jump tasks. The participants (47 young volleyball players; age: 20.8 ± 3.8 years) performed bilateral and single-leg CMJs, modified T-test, 505 CoD test, 25-m sprints (with 5...
Article
Full-text available
Traditional neuromuscular tests (e.g., jumping and sprinting tasks) are useful to assess athletic performance, but the basic outcomes (e.g., jump height, sprint time) offer only a limited amount of information, warranting a more detailed approach to performance testing. With a more analytical approach and biomechanical testing, neuromuscular functi...
Article
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The purpose of this study was twofold: (a) to compare postural control between a group of young female gymnasts (n = 15; age: 11.2 ± 1.9 years) and non-trained peers (n = 15; age: 10.9 ± 2.0 years), and (b) to investigate the effect of an 8-week whole body exercise intervention program on postural control in young female gymnasts. Postural control...
Article
The aim of this study was to investigate the reliability of running biomechanics assessment with a wearable commercial sensor (RunScribeTM). Participants performed multiple 200-m runs over sand, grass and asphalt ground at the estimated 5-km tempo, with an additional trial with 21-km tempo at the asphalt. Intra-session reliability was excellent for...
Article
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Understanding the relation between the motion of the center of mass (COM) and the center of pressure (COP) is important to understand the underlying mechanisms of maintaining body equilibrium. One way to investigate this is to stabilize COM by fixing the joints of the human and looking at the corresponding COP reactions. However, this approach cons...
Article
The purpose of this review was to gather studies that reported on the impact of COVID-19 restrictive measures on physical activity and sedentary behavior in children and adolescents, and to present key findings. The search for articles was performed in three databases of scientific literature: PubMed, Scopus, and Web of Science. We included article...
Article
This study aimed to assess intra- and inter-visit reliability of a novel EasyForce dynamometer for assessment of maximal strength in knee extension and flexion, and hip abduction and adduction tasks. Young healthy participants (n = 50; 25 males, 25 females; age: 23.4 ± 2.1 years) were measured for maximal joint torque with EasyForce dynamometer and...
Article
Change of direction (CoD) ability is critical for the success of athletes in many sports. The purpose of this study was to perform a principal component analysis using 9 CoD tests in order to reveal possible subcomponents of CoD ability, which could aid practitioners in test selection. Male and female kinesiology students (n = 76) performed all CoD...
Article
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Musculoskeletal disorders are the most common work-related health problems. As low back disorders (LBD) are the most problematic, the aim of this study was to provide an in-depth analysis of the nationwide data on sick leaves due to work-related LBDs among workers in Slovenia in 2015–2019 by gender, age and various economic activities (NACE Rev 2 c...
Article
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Patients after joint arthroplasty tend to be less physically active; however, studies measuring objective physical activity (PA) and sedentary behavior (SB) in these patients provide conflicting results. The aim of this meta-analysis was to assess objectively measured PA, SB and performance at periods up to and greater than 12 months after lower li...
Article
Šport : revija za teoretična in praktična vprašanja športa (69;2: 109-114). [Main text in Slovene] The force-velocity (FV) profiling has recently been proposed as a tool to identify the neuromuscular capabilities of athletes and to optimized the training based on the obtained results. The FV relationship allows the identification of the mechanical...
Article
This study sought to investigate the inter-relationship between different vertical and horizontal variants of reactive strength index (RSI) and change of direction performance. Thirty-one male volleyball players (age: 22.4 ± 3.9 years), performed bilateral drop jumps (DJ), bilateral and unilateral countermovement jumps (CMJ), and triple hops for di...
Article
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Tactile interaction between humans and elements in the built environment, such as furniture, is often under-appreciated. The aim of this study was to objectively evaluate thermal properties of ten tabletop materials as well as user perceptions of those materials after use. Sixteen participants tested ten materials in a randomised order. Infrared th...
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Spinal exoskeletons have been suggested as an approach for the prevention and rehabilitation of occupational low back pain (LBP). While the state-of-the-art exoskeletons were shown to substantially unload the back, user acceptance is still limited. Perceived discomfort and restriction of freedom of movement are commonly reported. In this pilot stud...
Article
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The science and technology of wearable robots are steadily advancing, and the use of such robots in our everyday life appears to be within reach. Nevertheless, widespread adoption of wearable robots should not be taken for granted, especially since many recent attempts to bring them to real-life applications resulted in mixed outcomes. The aim of t...
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In this study, 90 (51 males, 39 females) tennis players performed single-leg quiet stance and single-leg landing tasks. For the static standing task, center-of pressure (CoP) velocities, amplitudes, frequency and area were calculated. For the landing tasks, time to stabilization as well as dynamic postural stability index were considered. The analy...
Article
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BACKGROUND AND STUDY AIM: There is a lack of the test for evaluation sport-specific movements in karate. The aim of this study was empirical argumentation about reliability of karate-specific test (KSAT) and its associations with T-test and change of direction (CoD). MATERIAL AND METHODS: The decomposition of the project goal into research tasks w...
Article
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The difference between squat jump (SJ) and countermovement jump (CMJ), termed eccentric utilization ratio (EUR), is frequently suggested as an outcome that can be used in athletic training design. Unlike performance in SJ and CMJ, which is associated with sports performance, the association between EUR and sports performance is almost unexplored. T...
Article
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Research into flywheel (FW) resistance training and force–velocity–power (F–v–P) profiling has recently gained attention. Ground reaction force (GRF) and velocity (v) during FW squats can be predicted from shaft rotational data. Our study aimed to compare the inter-set reliability of GRF, v, and F–v–P relationship output variables calculated from f...
Article
Background Postural sway during quiet standing has been shown as a useful task to assess risk of falling in older adults. While the risk of falling is consistently reported to be higher in older females than males, the sex-related differences in postural sway are not consistent across the studies. Research question What are the effects of age and...
Article
Full-text available
The force-velocity (FV) relationship allows the identification of the mechanical capabilities of musculoskeletal system to produce force, power and velocity. The aim of this study was to assess the associations of the mechanical variables derived from the force-velocity (FV) relationship with approach jump, linear sprint and change of direction (Co...
Article
Full-text available
The purpose of this pilot study was to investigate the effects of change-of-direction (CoD) angle (90° vs. 180°) and the inclusion of acceleration approach on total task time, CoD deficit, and agreement regarding inter-limb asymmetry direction across CoD tasks. The sample included 13 young male handball players (age: 22.4 ± 3.2 years). The CoD task...
Article
Full-text available
Muscle performance between contra-lateral knee extensors is most often assessed using maximal test for isometric/isokinetic torque evaluation. Recently, the rate of force development scaling factor (RFD-SF) has been used to evaluate neuromuscular capacity with a range of submaximal target peak torques, which could highlight other aspects of inter-l...
Article
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The aims of the present study were to: 1) determine within and between-session reliability of multiple metrics obtained during the triple hop test and, 2) determine any systematic bias in both the test and inter-limb asymmetry scores for these metrics. Thirteen male youth American football athletes performed three trials of a triple hop test on eac...
Article
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Single-joint isometric and isokinetic knee strength assessment plays an important role in strength and conditioning, physical therapy and rehabilitation. The literature, however, lacks absolute reference values. We systematically reviewed the available studies that assessed isometric knee strength. Two scientific databases (PubMed and PEDro) were s...
Article
Full-text available
Wrist-worn consumer-grade activity trackers are popular devices, developed mainly for personal use. This study aimed to explore the validity, reliability and sensitivity to change of movement behaviors metrics from three activity trackers (Polar Vantage M, Garmin Vivoactive 4s and Garmin Vivosport) in controlled and free-living conditions when worn...
Presentation
Introduction. Physical activity (PA), sedentary behaviour (SB) and sleep collectively affect mental and physical health of older adults. According to the novel 24-hour movement guidelines, older adults should engage in at least 150 minutes of moderate-to-vigorous PA per week, limit their sedentary time to 8 hours per day, and sleep between 7 and 8...
Presentation
Introduction. Osteoarthritis (OA) is the most common degenerative musculoskeletal disorder affecting mostly older adults. It causes joint pain, limits functional ability, decreases physical activity levels, and leads to increased sedentary behavior. To restore function and maintain a healthy lifestyle, hip and knee arthroplasty are being considered...
Article
Introduction Jumping ability is one of the most important physical qualities in military personnel. Previous training intervention studies have shown equivocal effects on jumping ability. In this study, we assessed the effect of a 12-week resistance exercise programme on countermovement jump (CMJ) performance with and without military equipment. M...
Article
Full-text available
Physical activity (PA) and sedentary behavior (SB) levels in healthy adults are predomi-nately based on self-reporting measures, which generally overestimate PA but underestimate SB. Patients with coronary artery disease (CAD) eligible for cardiac rehabilitation (CR) follow an individualized program; thus, objective assessment of physical performan...
Data
See paper : Validity, Reliability and Sensitivity to Change of Three Consumer-Grade Activity Trackers in Controlled and Free-Living Conditions among Older Adults
Article
Full-text available
Change-of-direction (CoD) ability is an important determinant of athletic performance. Muscle strength is among the most important determinants of CoD ability. However, previous studies investigating the relationship between CoD ability and muscle strength focused mostly on flexor and extensor muscle groups, or used multi-joint exercises, such as j...
Article
Full-text available
In this study, we investigated the association of magnitude and agreement in direction between asymmetries measured on single-joint (hip and trunk), complex movement (jumping), and skill (change of direction (CoD)) levels. The study sample comprised 43 junior-and senior-level (age = 20.5 ± 6.0 years; height = 194.5 ± 7.2 cm; body mass = 86.8 ± 10.1...
Article
Full-text available
Neuromuscular fatigue is known to impair balance ability, which is reflected in increased postural sway during quiet standing tasks. Recently, quantifying transient characteristics of postural sway has been suggested as an approach to obtain additional information regarding postural control. However, this approach is currently vastly unexplored. Th...