Damir Zubac

Damir Zubac
University of Cologne | UOC · Internal Medicine, Study group Oncological Exercise Medicine

Ph.D.

About

38
Publications
12,421
Reads
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218
Citations
Citations since 2016
36 Research Items
217 Citations
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
Additional affiliations
July 2018 - July 2020
Science and Research Center Koper
Position
  • PostDoc Position
January 2018 - present
University of Split
Position
  • Research Assistant
September 2017 - present
Science and Research Center Koper
Position
  • Research Associate

Publications

Publications (38)
Article
The aim of the present study was to investigate whether greater splenic emptying or higher skeletal muscle deoxygenation amplitude (determined by near-infrared spectroscopy, NIRS) contributes to higher V̇O2 max. during supine cycling. We hypothesized that the reduction in splenic volume, and subsequent manipulations of O2 delivery by blood ejected...
Article
Full-text available
Background There is a growing interest among the research community and clinical practitioners to investigate cardiopulmonary exercise test (CPET) procedures and protocols utilized in supine cycling. Materials and Methods The current study investigated the effects of posture on indicators of exercise intensity including gas exchange threshold (GET...
Article
Full-text available
Purpose The role of splenic emptying in O2 transport during aerobic exercise still remains a matter of debate. Our study compared the differences in spleen volume changes between aerobically trained and untrained individuals during step-transition supine cycling exercise at moderate-intensity. We also examined the relationship between spleen volume...
Article
Full-text available
Objectives: This study evaluates the effect of post-activation potentiation (PAP) after 5x5s maximal voluntary isometric contractions (activation stimulus, AS) on tensiomyography (TMG) and torque twitch contractile parameters of vastus lateralis (VL) and medialis (VM), respectively. Further, we validated the decomposition of TMG response to separa...
Article
This manuscript quantified spleen volume changes and examined the relationship between those changes and oxygen uptake kinetics during supine cycling. Ten volunteers (age = 22 ± 3), completed 3 step transitions from 20 W to their power output at 90% gas exchange threshold. Ultrasonic measurements of the spleen were performed each minute. The larges...
Article
Full-text available
The present study examined whether differences in the heart rate recovery following flywheel exercise cessation were associated with differences in maximal oxygen uptake (V˙O2 max.), age and sex in trained adults. Eleven men (age range 22–49 years, V˙O2 max. = 43.6 ± 7.6 mL kg min−1) and ten women (age range 20—53 years, V˙O2 max. = 38.0 ± 5.7 mL k...
Article
Full-text available
In a randomized crossover trial, we examined whether age plays a role in the mean arterial pressure (MAP) response during a vigorous flywheel exercise of varying load. We hypothesized that the magnitude of increase in the MAP during the flywheel exercise would increase in proportion to advancing age, thereby imposing a significant challenge to the...
Article
Full-text available
Purpose: To investigate the effects of motor imagery (MI) training on strength and power performances of professional athletes during a period of detraining caused by the COVID-19 outbreak. Methods: Thirty male professional basketball players (age = 26.1 ± 6.2 years) were randomly assigned to three counterbalanced groups: two MI training groups, w...
Article
Background: The cardiovascular response to variable load exercise on a flywheel ergometer is still unknown. Objective: This study examined the effects of flywheel exercise on cardiovascular response and brachial artery vasodilation capacity in healthy, active men. Methods: In this cross-sectional study, nineteen men (20-57 years old) completed...
Article
Full-text available
The microclimate of an airline cabin consists of dry, recirculated, and cool air, which is maintained at lower pressure than that found at sea level. Being exposed to this distinctive, encapsulated environment for prolonged durations, together with the short-term chair-rest immobilization that occurs during long-haul flights, can trigger distinct a...
Article
We studied the effects of age on different physiological parameters, including those derived from (i) maximal cardiopulmonary exercise testing (CPET), (ii) moderate-intensity step transitions, and (iii) tensiomyography (TMG)-derived variables in moderately active women. Twenty-eight women (age, 19 to 53 years), completed 3 laboratory visits, includ...
Poster
We investigated the effects of variable load exercise on cardiovascular response in healthy participants of a wider-age range. During exercise, the larger moments of inertia imposed a substantial burden to the cardiovascular system, while age-differences of our participants were not associated with a robust rise in MAP (%) throughout the exercise....
Article
The present study investigated the effect of a 3% rapid weight loss (RWL) procedure on neuromuscular performance in elite, Olympic-style boxers. Nine boxers were randomly assigned to two experimental procedures (RWL and control, in a randomized counterbalance order) to perform 5-s maximum isometric voluntary contractions (MVC) of the dominant leg k...
Conference Paper
Background Skeletal muscle function declines throughout ageing. Therefore, aerobic exercise interventions are typically prescribed as a viable tool to promote oxygen delivery to contracting muscles. Previous findings on exercise interventions in aging population demonstrated that aged individuals predominantly rely on nonoxidative metabolism for en...
Poster
The effects of variable load exercise on cardiovascular response in young and middle-age men Background There is a large body of evidence suggesting that aging atrophy is instrumental in the reduction of work capacity in healthy humans (1). To counter aging atrophy exercise scientist had suggested the variable load exercise (or the flywheel exerci...
Article
Full-text available
Purpose Athletes in Olympic combat sports experience body water fluctuations resulting from training and intentional dehydration when making weight. Despite the popularity of urine specific gravity (USG) and urine osmolality (UOSM) measurement in characterizing fluid fluctuations, their utility remains questioned. This systematic review/meta-analys...
Article
Full-text available
Objective: This study investigated the effects of an 8-week plyometric training (PT) session on countermovement jump (CMJ) height, take-off velocity, and Tensiomyography (TMG) derived contractile parameters in seniors. Methods: Twenty-three senior adults (age 66.7±5.2 years) were randomly divided into two groups: PLYO (n=11) and CTRL (n=12). Ten...
Conference Paper
Introduction: There is a large body of evidence to suggest that short-term heat acclimation, commonly prescribed to athletes via repetitive training session(s) in heat is translated into greater exercise capacity when competing in warm/hot environments. However, less is known regarding the magnitude of post-exercise recovery of oxygen uptake, i.e.,...
Article
Urine specific gravity (USG) is the most commonly reported biochemical marker used in research and applied settings to detect fluid deficits in athletes, including those participating in combat sports. Despite the popularity of its use, there has been a growing debate regarding the diagnostic accuracy and the applicability of USG in characterizing...
Article
Full-text available
Purpose: The aim of this study was to examine the influence of rapid weight loss (RWL) on competitive success in elite youth Olympic-style boxers. In addition, this study examined the practice and prevalence of weight reduction, weight management protocols and related symptoms in youth boxers from twelve European countries (n=83; all males; 17.1±0...
Article
Full-text available
Electromechanical efficiency (EME) of skeletal muscle represents the dissociation between the mechanomyographic (MMG) to electromyographic (EMG) amplitudes and was commonly used in clinical settings (e.g. muscle disease, atrophy, rehabilitation). However, due to lower reliability and of both MMG and EMG as well as lower validity of MMG we aimed to...
Article
Full-text available
Objective: The aim of this study was to document the prevalence of degenerative intervertebral disc changes in the patients who previously reported symptoms of neck pain and to determine the influence of education level on degenerative intervertebral disc changes and subsequent chronic neck pain. Methods: One hundred and twelve patients were ran...
Article
Purpose: The aim of the present study was to determine the reliability and diagnostic accuracy of non-invasive urinary dehydration markers, in field-based settings on a day-to-day basis in elite adolescent amateur boxers. Methods: Sixty-nine urine samples were collected on a day-to-day basis, from twenty-three athletes (17.3±1.9 y), during their...
Article
Full-text available
Background & Study Aim: The purpose of this study was to investigate the combined effects of voluntary body-mass loss and the influence of exercise induced muscle damage (EIMD) markers on the muscle mechanical properties in real-life settings. Materials & Methods: Ten elite kickboxing athletes (all males, age 22.1±4.1 y) were tested at the beginni...
Article
Full-text available
The aim of the study was to examine whether an improvement in jumping performance after 8 weeks of plyometric training (PT) runs in parallel with changes in lower-limb skeletal muscle contractile properties. Using noninvasive tensiomyography (TMG), we assessed contraction time (Tc) and the maximal amplitude of radial displacement (Dm) in 20 subject...
Article
Full-text available
IT IS GENERALLY ACCEPTED THAT VOLUNTARY WEIGHT CUTTING BEFORE ENTERING A COMPETITION HAS BECOME A HABITUAL PRACTICE AMONG COMBAT SPORTS ATHLETES. APART FROM ANTIDOPING REGULATIONS BANNING THE USE OF DIURETICS, THE OLYMPIC GOVERNING BODY HAS NOT ESTABLISHED POLICIES AIMED TO MONITOR AGGRESSIVE WEIGHT CUTTING. IT IS EXTREMELY IMPORTANT FOR COMBAT SPO...
Article
This study investigated (i) the prevalence of hypohydration and (ii) association between urinary indices of hydration status and confounding factors (e.g., urine protein content, water intake) in elite youth boxers during their weight-stable phase before competition. Sixteen national champion boxers (all male, 17 ± 1 y) were measured on 3 occasions...
Article
Full-text available
According to present combat sports literature, acute dehydration is the most common weight-manipulating technique adopted by combat sport athletes. Over a one-month period, possible fluctuations in dehydration assessment biomarkers of elite kickboxing athletes (N = 11) are investigated. Using repeated measures (RM) ANOVA, we found significant diffe...
Article
Full-text available
Weight cutting is a common practice in amateur boxing with the purpose of taking advantage of rivals competing in weight divisions below the athlete’s normal weight. Dehydration is a common weight-­manipulating technique in boxing, and is known as a serious health-­threatening behavior. In this study, we investigated field hydration status differen...

Questions

Questions (5)
Question
Is someone familiar with the applicability of turbidimetric method in urinary proteins analysis , sampled for a first morning void of the bladder ?
Question
can someone explain the application of the
constant error (CE) in kinesiology ?
Question
Exertional rhabdomyolysis in athlete’s  and acute dehydration?
Question
Equation of skin temperature beside Burton 1936 , some novel findings ?
Question
practical application in kinesiology 

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Projects

Projects (3)
Project
Sports talent identification implies identification of the gifted, so as to achieve their fullest potential, often neglecting biological and relative age. Project objectives are: 1) To strengthen Croatian potential of sports talent development by connecting: national federations, local community, coaches and scientific institutions; 2) To investigate the correlation of biological and relative age with results; 3) To generate new knowledge on the usefulness of the instrument for assessing biological age and muscle contractile; 4) To strengthen awareness on the importance of biological age in the process of sports talent development.
Project
The main aim of the project is to investigate the effects of motor imagery practice (i.e., strength training task) on functional performance recovery after total knee replacement surgery. Functional performance battery is compiled of following tests: - MViC - Central Activation Ratio - Muscle contractile parameters (assessed by Tensiomyography [TMG]) - Muscle Electromechanical efficiency (EMG and TMG) - Gait parameters (assessed by OptoGait system) - Timed up to go test - Chair stand