Physical Tests Research Articles

Feasibility Study of Technology Footwork Ability Test on National Disability Badminton Athletes

Technological advances in sports testing and measurement are expanding, but there is a notable gap in research focused on physical conditioning tests for athletes with disabilities. This study aims to evaluate the effectiveness of footwork ability test technology for para badminton athletes. A quantitative descriptive design was employed, involving trials with both the footwork ability test technology and conventional methods. The subjects were National Para Badminton Athletes of Malaysia, selected through purposive sampling for their relevance to the research objectives. The study utilized a footwork ability test device, whose validity and reliability were assessed in comparison to conventional tests. Data were analyzed using percentage calculation techniques to determine effectiveness and error rates. Results indicate that the footwork ability test technology achieved an effectiveness rate of 97.1%, demonstrating superior performance with a lower error rate than conventional tests. This indicates the technology's suitability for athletes with disabilities, including those categorized as lower standing, upper standing, and short stature. The findings suggest significant potential for broader application in various sports disciplines. Future research should explore the technology's adaptability to different sports and environmental conditions, contributing to more inclusive and advanced training methodologies for athletes with disabilities.

A sandwich-type Winkler-Pasternak double elastic foundation beam model for analysis of nut column load transfer systems of shiplifts

The rack and pinion shiflifts feature its capability of fortification against extreme accidents of unbalance of ship chamber. This requires the load transfer systems of nut columns to be able to transfer the huge and centralized loads from the safety mechanisms to the tower columns in a distributive bearing way. Aiming at exploring a design-oriented computation method for the nut column load transfer systems (NCLTSs), a sandwich-type semi-infinite coupling Winkler-Pasternak double elastic foundation beam model (DEFBM) has been established, with a distributive assumption of the axial constrain force on the interfaces between the nut columns, mortar beds, adjusting beams and the second stage concrete based on the physical model test, has been proposed. A set of formulars for describing the distribution of deflections, internal forces and stress of nut columns and adjusting beams have been derived. A case study of the Three-Gorges shiplift has been conducted to demonstrate the approach of calculation of internal forces and stress by applying the formulas based on sandwich-type Winkler-Pasternak DEFBM, showing the convenience and rationality of the method to parametric layout design of the nut columns and adjusting beams in NCLTSs. Not only to NCLTSs and rack load transfer systems of shiplifts, the sandwich-type Winkler-Pasternak DEFBM also supplies the reference to the modeling and analysis of the rail-embedment structural systems broadly applied in hydraulic engineering.

Buffer Screening of Protein Formulations Using a Coarse-Grained Protocol Based on Medicinal Chemistry Interactions.

In drug and vaccine development, the designed protein formulation should be highly stable against the temperature, pH, buffer, excipients, and other environmental settings. Similarly, in a sensing unit, one needs to know how strongly two biomolecules bind to guide the design of the biorecognition unit accordingly. Typically, the community performs a series of experiments to thoroughly examine the parameter space, the so-called design-of-experiment (DoE) method, to identify the optimal formulation conditions. Unfortunately, extensive physical testing entails high costs, repeatability issues, and a lack of in-depth knowledge of the underlying mechanisms that affect the final outcome. To address these challenges, we developed a physics-based simulation protocol for buffer screening of protein formulations. We are introducing a coarse-grained molecular simulation protocol that consists of six different interactions. The so-called medicinal chemistry interactions (electrostatics, hydrophobicity, hydrogen bonding propensity, disulfide bonding, and water-water) are based on the physical nature of the protein's amino acid and the partitioning/polarity of any other chemical constituent. The protocol is applied in immunoglobulin-based monoclonal antibodies. We have analyzed the protein behavior as a function of acidity (pH) to discover the isoelectric point by solving the Poisson-Boltzmann equation in a mesoscale grid. To identify the conditions under which the protein oligomerizes in a given buffer, pH, temperature, and ionic strength, we are performing dissipative particle dynamics (DPD) simulations. The protocol allows researchers to reach the high time/space scales required to study protein formulations in their full complexity. Combined with the disruptive protein folding artificial intelligence (AI) algorithms that have been recently developed, the protocol creates a powerful digital framework for cultivating advanced pharmaceutical and biological applications.

Anthropometrical and Physical Performance Profiles of Military Cadets from Angola

Military efforts must include different evaluations to prepare for battles around the world. This study aimed to characterize the body composition and physical performance levels of military cadets from Angola. Ninety military academy participants (males: n=48, females: n=42) aged 18-24 years old performed a battery of physical fitness tests to evaluate upper and lower limbs muscle strength, cardiorespiratory fitness, and body composition. Significant differences between sexes were observed in all variables (p<0.05). Males and females, respectively, showed normal-range values in the body mass index (BMI) (23.32±3.95; 24.75±4.01 Kg/m2), body fat (9.09±6.17; 14.59±8.86 kg), push-ups (36.88±9.81; 20.67±6.62 repetitions), sit-ups (71.04±17.14; 61.95±19.05 repetitions) and medicine ball throwing (5.06±0.89; 4.00±0.84 m). However, countermovement jump (36.14±6.54; 23.53±7.62 cm), 80-meter sprint (13.08±1.90; 14.96±2.01 s), cardiorespiratory fitness (maximal oxygen uptake: 38.02±6.3; 33.18±6.49 ml/kg/min), and fat-free mass values (54.17 ± 8.06; 46.18 ± 6.9 kg) were considered low, specifically in females. Military cadets from Angola, especially females, presented low values of fat-free mass, cardiorespiratory fitness, and neuromuscular maximal performances (countermovement jump and sprint). This highlights a need for body composition and physical condition improvement to perform physical tasks with high military relevance.

Influence Mechanism of Water Level Variation on Deformation of Steep and Toppling Bedding Rock Slope

The construction of major hydropower projects globally is challenged by slope deformation in reservoir areas. The deformation and failure mechanisms of large rock slopes are complex and poorly understood, making prevention and management extremely challenging. In order to explore the influence mechanism of the water level variation on the deformation of steep toppling bedding rock slopes, this paper takes the right bank slope near the dam area of the Longtou Hydropower Station as an example, and field investigations, deformation monitoring, physical simulation tests and numerical analyses are carried out. It is found that the slope deformation response is obvious under the influence of the reservoir water level variation, which is mainly reflected in the change in the slope groundwater level, rock mechanical parameters and seepage field in the slope body. The toe of the slope produces plastic deformation and maximum displacement. With the increase in the reservoir water level, the plastic zone expands and the displacement increases, which leads to the intensification of the slope deformation. This paper puts forward that the deformation and failure modes of the steep and toppling bedding rock slope caused by water level variation are due to shear dislocation, bending deformation and toppling fracture. This study reveals the influence mechanism of the water level variation on the deformation of steep and toppling bedding rock slopes, which can provide theoretical support for the construction of major hydropower projects.

OPTIMIZATION OF VCO LOTION PREPARATIONS WITH VARIATIONS CETYL ALCOHOL AND CARRAGEEN CONCENTRATIONS USING SLD METHOD

Lotion is a cosmetic preparation of an emollient group that contains a large amount of water. This formulation possesses several properties, namely, as a source of moisture for the skin, providing an oily layer that makes the hands and body soft. VCO is utilized as a natural skin moisturizer to prevent tissue damage and protect the skin. VCO has a very high moisture content, which prevents skin dryness. A lotion was formulated with an emulsifying agent to stabilize the emulsion system. One of the constituent ingredients of the lotion is cetyl alcohol, which functions as an emulsifying agent. Cetyl alcohol can be substituted by carrageenan, which serves the same function with the added benefit of being a humectant. The aim of this study was to identify the formulation of VCO lotion and to investigate the effect of different concentrations of the emulsifying agents cetyl alcohol and carrageen on physical evaluation tests, namely organoleptic tests, homogeneity tests, spreading tests, pH tests, adhesion tests, emulsion type tests, and viscosity tests in lotion formulations. An experimental method was employed in this study. The research was carried out by making lotions from various ingredients containing the active ingredient VCO at a concentration of 7%, as well as varying concentrations of cetyl alcohol (range 2-5%) and carrageenan (range 1-3%) as an emulsifying agent and additional ingredients for the preparations whose optimization had been determined using the simplex lattice design method ...

Predicting special forces dropout via explainable machine learning.

Selecting the right individuals for a sports team, organization, or military unit has a large influence on the achievements of the organization. However, the approaches commonly used for selection are either not reporting predictive performance or not explainable (i.e., black box models). In the present study, we introduce a novel approach to selection research, using various machine learning models. We examined 274 special forces recruits, of whom 196 dropped out, who performed a set of physical and psychological tests. On this data, we compared four machine learning models on their predictive performance, explainability, and stability. We found that a stable rule-based (SIRUS) model was most suitable for classifying dropouts from the special forces selection program. With an averaged area under the curve score of 0.70, this model had good predictive performance, while remaining explainable and stable. Furthermore, we found that both physical and psychological variables were related to dropout. More specifically, a higher score on the 2800m time, need for connectedness, and skin folds was most strongly associated with dropping out. We discuss how researchers and practitioners can benefit from these insights in sport and performance contexts.

Physical Function, Self-Perceived Physical Fitness, Falls, Quality of Life and Degree of Disability According to Fear and Risk of Falling in Women with Fibromyalgia.

Background: People with fibromyalgia (FM) experience a range of symptoms (chronic widespread pain, fatigue, mood disorder, sleep problems, muscle stiffness) that promote deterioration of physical condition and function. With impaired physical function, fear of falling and risk of falling increases. This study evaluated physical function, self-perceived physical fitness, falls, quality of life, and the degree of disability caused by FM according to fear and risk of falling in Spanish adult women with FM. Methods: Cross-sectional study involving 84 Spanish adult women with FM. Participants completed tests to assess their physical function and completed questionnaires to evaluate self-perceived physical fitness, falls, the disabling effect of FM, quality of life, fear of falling, and risk of falling. Nonparametric statistical tests were used to analyze possible intergroup differences (Mann-Whitney U test) and correlations between variables (Spearman's Rho). Results: Women with a fear of falling and at risk of falling presented a worse performance in physical tests, worse self-perceived physical fitness, greater number of falls, lower quality of life, and greater degree of disability due to FM. Weak and moderate correlations were found for fear of falling and fall risk and the variables of interest. However, no intergroup differences were found, nor significant correlations in all variables. Conclusions: Women with FM who present fear of falling and risk of falling tend to have worse performance in physical function tests, in addition to worse self-perceived physical fitness, higher number of falls, poorer quality of life, and greater disabling effect of FM.

Experimental study on the use of green antimicrobial and plasticized agents during the lining of oil paintings with gelatinous materials

Purpose This paper aims to assess the efficiency of emulsified essential oils in glycerol as eco-friendly antimicrobial and plasticized agents added to the biopolymer of gelatin for lining historical oil paintings on canvases. Design/methodology/approach Cedar oil, cinnamon oil and their mixtures were emulsified in glycerol and incorporated into gelatin adhesive as green biocides and plasticizers. Physical, biological, chemical and mechanical tests were conducted on experimental mock-ups to assess the gelatin-based adhesive formulations for the reinforcement of canvas supports. Scanning electron microscope, colorimetric measurements, antimicrobial activity test, attenuated total reflection-Fourier transform infrared spectroscopy, tensile strength and elongation tests were carried out on the mock-ups before and after the artificial aging. Findings The formulations of gelatin-based adhesive with cinnamon and cinnamon-cedar mixture emulsified in glycerol proved their efficiency on the antimicrobial activity test, chemically delaying the decomposition of gelatin and accordingly providing compatible mechanical properties. Gelatin-based adhesive with emulsified cinnamon oil showed a slight yellowing that was quite improved with the mixture of the cinnamon-cedar-based adhesive formulation. Originality/value This study promotes a green approach to lining historical oil paintings by developing green formulations from bio-based origins that minimize the shrinkage and microbial infection of gelatin for lining paintings.

Association of Physical Performance with Mental and Physical Health-Related Quality of Life and Low Back Pain-Related Disabilities among Older Adults with Severe Obesity.

Background: Low back pain is one of the most prevalent musculoskeletal problems and continues to be the leading cause of disabilities worldwide. The aim of this study was to cross-sectionally investigate the association of physical performance with mental and physical health-related quality of life and low back pain-related disabilities among older adults with severe obesity. Methods: A total of 96 hospitalized older adults with severe obesity (45 males, 51 females, age: 69.7 ± 5.4 years; BMI: 43.7 ± 5.7 kg/m2) were recruited into the study. Physical performance, health-related quality of life, and low back pain-related disability were measured through physical performance tests, the 12-item short-form survey (SF-12), and the Oswestry disability index, respectively. Results: LBP-related disabilities, as well as physical health-related quality of life, were associated with all the physiological parameters measured by physical performance tests, including muscular strength, aerobic capacity, balance, and lower body flexibility (p < 0.05). In contrast, mental health-related quality of life was associated with fewer physiological parameters, such as primarily muscular strength (p < 0.05). Conclusions: These findings could provide important insights for developing rehabilitation strategies designed to improve LBP-related disabilities, as well as the physical and mental health-related quality of life, in older adults with severe obesity.

Exploring Acute Diarrhea in Infants: A Comprehensive Review of Infectious Agents and Laboratory Diagnostic Techniques

Introduction: acute diarrhea is one of the main causes of mortality in children under 5 years of age around the world. They disproportionately affect underdeveloped countries, where access to health services, drinking water and sanitation is limited. Objective: this review identifies the most relevant and recent studies associated with the topic, recognizes the most common infectious agents and determines the laboratory techniques used for their diagnosis. Methods: the literature was reviewed from sources such as Elsevier, PubMed, Scopus, SciELO and Google Scholar during the period March-May 2024, published in the last 5 years and several studies prior to 2019 that contributed relevant information to the topic. Results: previous studies reveal that acute childhood diarrhea is mainly characterized by its fecal-oral transmission, caused by Rotavirus and Adenovirus, and sometimes by Escherichia coli, Salmonella spp., Giardia lamblia and Entamoeba histolytica, among others. Acute diarrhea is characterized by the presence of three or more soft or liquid stools per day, and is classified according to its duration. Fecal increase, dehydration and electrolyte abnormalities are associated complications and constitute clinically useful elements for its diagnosis. For viruses, rapid tests and PCR are used, for bacteria, cultures and antibiograms, and for parasites, coproparasites, ELISA and PCR. Conclusion: These disorders represent a significant health challenge, with a considerable impact on morbidity and mortality, originating from viruses, bacteria and parasites. The diagnosis is made through physical, coprological examinations, immunochromatographic and molecular tests

The Immediate Effects of a Single 20-Minute Session of Transcranial Direct Current Stimulation (tDCS) on Muscle Strength in Older Adults

The older population often experiences a gradual age-related decline in the primary motor cortex, leading to muscle weakness that can harm their physical performances. Exercise could improve physical performance and prevent falling in older adults. However, the decrease in motor function and motor skills in older adults reduces the efficiency of fall prevention. Transcranial Direct Current Stimulation (tDCS) is a non-invasive intervention aimed at improving muscle strength in various conditions by utilizing transcranial direct current stimulation applied to the primary motor cortex (M1). Pre- and post-studies were conducted to demonstrate the effects of a single 20-minute session of tDCS alone, as well as to assess any potential side effects. Sixteen older individuals, both male and female, aged 65 years or older, with or without underlying diseases, were assessed for leg and hand grip strength, followed by physical performance tests. Subsequently, they underwent stimulation of the primary motor cortex through the placement of anodal tDCS (a-tDCS) over the left M1 for 20 min. Immediate effects were evaluated within 24 h, and side effects were recorded for up to 2 weeks after the stimulation. The results demonstrated that a single session of tDCS led to a significant increase in leg strength by 13 kg (5.9 to 20.1 kg, p &lt; 0.01). There was also a significant correlation observed with hand grip strength (r = 0.68, p &lt; 0.01). All physical performance tests, except the fastest speed in the 10-meter walk test, showed statistically significant improvements (p &lt; 0.01). Participants reported no serious side effects, and the intervention will now be incorporated into prospective clinical studies involving older populations to compare its effectiveness with other treatments. HIGHLIGHTS A single session of tDCS led to a significant increase in leg strength. A single session of tDCS, with a significant correlation observed with hand grip strength. Physical performance tests showed statistically significant improvements after a single session of tDCS. Participants reported no serious side effects. This intervention will now be incorporated into prospective clinical studies involving older populations to compare its effectiveness with other treatments. GRAPHICAL ABSTRACT

Anisotropic Durgapal-Fuloria compact stars in f(R) gravity

This study presented a new exact solution for anisotropic compact stellar objects within the framework of f(R)=R+αR2 gravity. In this context, the Durgapal-Fuloria metric potential has been employed to solve the field equation derived for f(R) theory. Furthermore, we have derived the generalized Darmois-Israel junction condition necessary for seamlessly connecting the interior region to the Schwarzschild exterior metric across the boundary hypersurface of the star in the context of f(R) gravity, and the interior solution is matched with the Schwarzschild exterior metric over the bounding surface of a compact star. These junction conditions stipulate that the pressure must not be zero at the boundary and should be proportional to the non-linear terms of f(R) gravity, a crucial aspect often overlooked by many researchers when investigating compact stellar models. Additionally, we derived the values of these parameters by using observational data of various compact stars (CSs), namely Her X-1, SAX J1808.4-3658, SMC X-1, LMC X-4, Cen X-3, 4U 1820-30, PSR J1903+327, 4U 1608-52, Vela X-1, and PSR J1416-2230. This approach enables us to investigate the comprehensive analysis of solutions numerically and graphically. We conducted various physical tests, including gradient of energy density and pressures, anisotropy, stability, equilibrium conditions, energy-density constraints, mass function, compactness, redshift, and adiabatic index, to assess the feasibility of our models. Our findings demonstrate the consistent behavior of our models provides a satisfactory physical situation as far as the observational results are confirmed.

Fundamental Tests of White Dwarf Cooling Physics with Wide Binaries

We present follow-up spectroscopy and a detailed model atmosphere analysis of 29 wide double white dwarfs, including eight systems with a crystallized C/O core member. We use the state-of-the-art evolutionary models to constrain the physical parameters of each star, including the total age. Assuming that the members of wide binaries are coeval, any age difference between the binary members can be used to test the cooling physics for white dwarf stars, including potential delays due to crystallization and 22Ne distillation. We use our control sample of 14 wide binaries with noncrystallized members to show that this method works well; the control sample shows an age difference of only ΔAge = −0.03 ± 0.15 Gyr between its members. For the eight crystallized C/O core systems we find a cooling anomaly of ΔAge = 1.13−1.07+1.20 Gyr. Even though our results are consistent with a small additional cooling delay (∼1 Gyr) from 22Ne distillation and other neutron-rich impurities, the large uncertainties make this result not statistically significant. Nevertheless, we rule out cooling delays longer than 3.6 Gyr at the 99.7% (3σ) confidence level for 0.6–0.9 M ⊙ white dwarfs. Further progress requires larger samples of wide binaries with crystallized massive white dwarf members. We provide a list of subgiant + white dwarf binaries that could be used for this purpose in the future.

Prevalence, factors and quality of life associated with frailty and pre‐frailty in middle‐aged and older adults living with HIV in Zimbabwe: A cross‐sectional study

AbstractObjectivesWe investigated associations between HIV, frailty and health‐related quality of life (HRQoL).MethodsThis cross‐sectional study recruited men and women aged ≥40 years in Zimbabwe. A researcher collected clinical and HRQoL data, and performed physical assessments and HIV testing. Frailty was defined using five criteria: unintentional weight loss, exhaustion, low physical activity, low gait speed, low handgrip strength. The presence of three or more criteria defined frailty, one to two pre‐frailty, and zero non‐frail. Data analysis used adjusted regression modelling.ResultsOf 1034 adults (mean ± SD, 62.0 ± 14.0 years), 21.6% (n = 223) were living with HIV: 93.3% knew their status, of whom 96.2% were on antiretroviral therapy (ART) and 89.7% of these had a viral load &lt;50 copies/mL. Mean age at HIV diagnosis was 44.6 ± 10.4 years (only 8.1% were ≥70 years), people had been living with HIV for 9.8 ± 5.0 years and had been on ART for 9.4 ± 5.2 years. Overall, HIV was not associated with frailty: adjusted odds ratio (aOR) was 0.99 [95% confidence interval (CI): 0.42–2.33] for frailty versus non‐frailty. However, each 5 years lived with HIV was associated with twice the odds of frailty/pre‐frailty (aOR = 2.03, 95% CI: 1.03–4.13), independent of age and ART duration. Furthermore, each 5 years of ART use was associated with 60% lower odds of frailty/pre‐frailty (aOR = 0.39, 95% CI: 0.19–0.78), independent of age and years lived with HIV. Older age, minimal education and poverty were associated with frailty. Frailty was associated with lower HRQoL in people both with and without HIV.ConclusionReduced survival and good viral suppression may explain the lack of association between HIV and frailty. Early ART initiation could reduce future risk of frailty.

Pengoperasian Pintu Pembilas terhadap Efisiensi Penggelontoran Sedimen: Studi Kasus Bendung Alale

This study discuss about hydraulic physical model tests of Alale weir to ensure hydraulic flow behaviour of design flood, condition on downstream of weir, and sediment flushing. In this study, observation were made on a physical hydraulic model in the laboratory with a scale of 1 : 50. Flushing tests were carried out to determine effectivity of the flushing, condition of sedimentation or scouring that occurred at downstream. Alale Weir has 3 flushing gate on the right side of the weir. Flushing is carried out using discharge Q25yr with a flowing duration of 1 hour. Flushing gate has considered quite effective in flushing sediment from upstream of weir. The sediment carried is almost 50% in all flushing scenarios. 6th flushing scenario (gate 1 and 2 were closed and gate 3 was fully opened) has the highest efficiency, 53.81%.

Performance of a Cable-Driven Robot Used for Cyber–Physical Testing of Floating Wind Turbines

Cyber–physical testing has been applied for a decade in hydrodynamic laboratories to assess the dynamic performance of floating wind turbines (FWTs) in realistic wind and wave conditions. Aerodynamic loads, computed by a numerical simulator fed with model test measurements, are applied in real time on the physical model using actuators. The present paper proposes a set of short and targeted benchmark tests that aim to quantify the performance of actuators used in cyber–physical FWT testing. They aim at ensuring good load tracking over all frequencies of interest and satisfactory disturbance rejection for large motions to provide a realistic test setup. These benchmark tests are exemplified on two radically different 15 MW FWT models tested at SINTEF Ocean using a cable-driven robot.

Study on the separation performance of a three-product hydrocyclone with overflow reseparation

This manuscript proposes a three-product hydrocyclone with overflow reseparation to reduce the particle misplacement in overflow, which achieves secondary separation by utilizing the after-energy of internal swirling flow. Numerical simulations and physical tests were applied to investigate the separation performance. The simulation results revealed that the coarser particles entrapped were effectively recovered by sideflow, the recovery of 20 μm particles in the overflow decreased by 16.71 % ∼ 23.09 % with significant fineness improvement compared with conventional hydrocyclone. The intensity of the internal centrifugal field decreased with the overflow separation chamber expanded, which resulted in an increased probability of particle misplacement during overflow. The test results revealed that the particle content of more than 20 μm in overflow was reduced by 2.44 % compared with conventional hydrocyclone, reducing the overflow separation chamber increased the sideflow ratio and solid phase yield, increased the difference in fineness between sideflow and overflow, and improved the narrow-grain separation performance.

Physical education and sport activity assessment tool-based machine learning predictive analysis for planification of training sessions

Background and purpose The aim of this study is to incorporte machine learning techniques in physical education activities assessment so we can plan a training session and learning cycle based on predictive analyses using machine learning algorithms. Material and methods A dataset represent the collection of physical tests (as Harvard test, Vertical and Horizontal Trigger) and activities performance (as 600 m, 1000 m, 12 min cooper) of 600 students in a secondary high school, aged between 15 and 20 years old (mean:16,21, SD:0,92), during 2021-2022 scholar year and project the predicted results on the following learning cycles in the scholar year of 2022-2023. We used Microsoft Azure Machine Learning Studio to obtain the best predictive model based on R2 score as an evaluating metric. Results Even if we focus on one metric test (as a target) with numeric values in this article, the results were promising compared to the predicted values of both physical tests and athletic performances, where we noticed some students have exceeded the expected values to reach. And the predictive analysis unveiled the more important features impacting the predicted results for the physical test. Conclusions Incorporating the Machine Learning techniques may encourage the change in the way we teach physical education and sport activities; otherwise, the assessment based on ML techniques will give a different overview on how to start a learning cycle and follow it up. The obtained predictive model provides an explication of the most impacting features on students’ performance allowing any training planification to relay on their importance respectively based on their density that affects prediction.

Failure analysis of Nehbandan granite under various stress states and strain rates using a calibrated Riedel–Hiermaier–Thoma constitutive model

This study presents a comprehensive procedure for determining, calibrating, and validating the Riedel–Hiermaier–Thoma (RHT) material model parameters for granite. The process involves collecting a comprehensive dataset of conventional mechanical tests conducted on various types of granite worldwide. Based on this dataset, one set of RHT material model parameters is determined. Additionally, a specific granite sample from Iran, known as Nehbandan granite, is characterized through physical and mechanical testing to obtain another set of parameters. The challenging task of determining the third set of parameters, which are difficult to obtain analytically and experimentally, is accomplished through a calibration process that iteratively adjusts the parameters based on comparisons between numerical simulation results and experimental data. To validate the determined parameters, a series of tests, including uniaxial compressive strength (UCS), triaxial compressive strength (TCS), Brazilian tensile strength, and dynamic Brazilian using split Hopkinson pressure bar (SHPB) tests, are conducted on the Nehbandan granite. These tests are also simulated using LS-Dyna software, and the numerical simulation results are compared with the corresponding experimental test results. The comparison between the numerical and experimental data serves as a means of validating and verifying the accuracy and reliability of the determined RHT material model parameters for granite. The results demonstrate the successful determination and calibration of the RHT material model parameters for granite. The model exhibits effectiveness in predicting the behavior of granite under various loading conditions. The validation process confirms the accuracy and reliability of the determined parameters through a close agreement between numerical simulations and experimental data. The findings contribute to a better understanding of granite's mechanical response and provide a reliable tool for simulating and predicting its behavior in engineering applications. The validated RHT material model parameters offer a robust framework for accurate numerical simulations, enabling engineers to make informed decisions in rock engineering projects.