Strength Measurements Research Articles

Effect of a home-based isometric handgrip training programme on systolic blood pressure in adults: A randomised assessor-blinded trial

ABSTRACT Objectives To evaluate the effects of 20 weeks of home-based isometric handgrip training (IHT) compared with usual care on systolic blood pressure (SBP) in adults. Design and participants This was a randomised, controlled, assessor-blinded trial. Participants were randomised to either IHT (intervention group) or usual care (control group). Interventions Participants randomised to the intervention group performed a session of 16 min of effective workout home-based IHT three times per week for 20 weeks. Participants randomised to the control group were asked to continue their daily activities as usual. Outcomes The primary outcome was the difference in SBP between groups over 20 weeks. Secondary outcomes were diastolic blood pressure, heart rate, handgrip strength, and self-administered home blood pressure measures. Results Forty-eight adults (mean [SD] age, 64 [8] years) were included in this trial. The adjusted between-group mean difference in SBP was 8.12 mmHg (95% CI 0.24 to 16.01, p = 0.04) – favouring the usual care group. No differences between groups were found in any of the home blood pressure measurements. Conclusions This trial showed that 20 weeks of home-based isometric handgrip training was not superior compared to the usual care in lowering SBP.

Multimodal measures of spontaneous brain activity reveal both common and divergent patterns of cortical functional organization

Large-scale functional networks have been characterized in both rodent and human brains, typically by analyzing fMRI-BOLD signals. However, the relationship between fMRI-BOLD and underlying neural activity is complex and incompletely understood, which poses challenges to interpreting network organization obtained using this technique. Additionally, most work has assumed a disjoint functional network organization (i.e., brain regions belong to one and only one network). Here, we employ wide-field Ca2+ imaging simultaneously with fMRI-BOLD in mice expressing GCaMP6f in excitatory neurons. We determine cortical networks discovered by each modality using a mixed-membership algorithm to test the hypothesis that functional networks exhibit overlapping organization. We find that there is considerable network overlap (both modalities) in addition to disjoint organization. Our results show that multiple BOLD networks are detected via Ca2+ signals, and networks determined by low-frequency Ca2+ signals are only modestly more similar to BOLD networks. In addition, the principal gradient of functional connectivity is nearly identical for BOLD and Ca2+ signals. Despite similarities, important differences are also detected across modalities, such as in measures of functional connectivity strength and diversity. In conclusion, Ca2+ imaging uncovers overlapping functional cortical organization in the mouse that reflects several, but not all, properties observed with fMRI-BOLD signals.

Synergistic Effects of SDS and H2O2 Combinations on Tracheal Scaffold Development: An In Vitro Study Using Goat Trachea.

Currently, a tissue-engineered trachea has been popularly used as a biological graft for tracheal replacement in severe respiratory diseases. In the development of tissue-engineered tracheal scaffolds, in vitro studies play a crucial role in allowing researchers to evaluate the efficacy and safety of scaffold designs and fabrication techniques before progressing to in vivo or clinical trials. This research involved the decellularization of goat trachea using SDS, H2O2, and their combinations. Various quantitative and qualitative assessments were performed, including histological analysis, immunohistochemistry, and biomechanical testing. Hematoxylin and eosin staining evaluated the cellular content, while safranin O-fast green and Masson's trichrome staining assessed glycosaminoglycan content and collagen distribution, respectively. The immunohistochemical analysis focused on detecting MHC-1 antigen presence. Tensile strength measurements were conducted to evaluate the biomechanical properties of the decellularized scaffolds. The results demonstrated that the combination of SDS and H2O2 for goat tracheal decellularization yielded scaffolds with minimal cellular remnants, low toxicity, preserved ECM, and high tensile strength and elasticity. This method holds promise for developing functional tracheal scaffolds to address severe respiratory diseases effectively.

Ab. No. 20 “Pulse-Tech”- Ideation to Prototype to Measure Pulse Strength Device

Introduction: This study focused on the creation and evaluation of the ‘Pulse Tech’ device, a novel tool designed for the measurement of pulse strength. The pulse, a crucial indicator of cardiovascular health, reflects the heart’s efficacy in blood circulation. Traditional pulse assessment methods, while effective, often require significant expertise and could lack objectivity. The ‘Pulse Tech device addressed these limitations by offering a more standardized and accurate method for measuring pulse strength. Understanding pulse strength, including its rate, rhythm, and quality, is essential in diagnosing various cardiac conditions. The study delineated seven primary pulse points (temporal, carotid, brachial, femoral, radial, popliteal, dorsalis pedis) and their medical significance. It also detailed various cardiovascular pulse shapes, their physiological causes, and associated potential diseases. The ‘Pulse Tech device was innovatively designed to measure pulse strength objectively, utilizing advanced sensors and software for data capture and analysis. Its distinctive feature was the use of light absorption through blood vessels to indirectly measure pulse strength. The methodology comprised two phases: the first centered on designing and developing the device, including its components like the CPU section, pulse rate sensor, and software. The second phase involved testing the device on healthy individuals to validate its effectiveness against traditional methods. Methods: The study’s participant criteria included healthy individuals aged 18-30 years. The objective was to establish a new standard in pulse measurement, enhancing the accuracy and reliability of cardiovascular assessments. This was crucial in both clinical and research settings, potentially aiding in the early detection and management of heart-related diseases. The study emphasized the necessity of a ‘Pulse Tech’ in enabling physicians and physiotherapists to make more informed decisions about patient care. Conclusion: The ‘Pulse Tech’ device represented a significant advancement in biomedical devices, with the potential to revolutionize the measurement and interpretation of pulse strength in clinical practice.

Neck strength alone does not mitigate adverse associations of soccer heading with cognitive performance in adult amateur players.

Soccer heading is adversely associated with neurocognitive performance, but whether greater neck strength or anthropometrics mitigates these outcomes is controversial. Here, we examine the effect of neck strength or anthropometrics on associations of soccer heading with neurocognitive outcomes in a large cohort of adult amateur players. 380 adult amateur league soccer players underwent standardized measurement of neck strength (forward flexion, extension, left lateral flexion, right lateral flexion) and head/neck anthropometric measures (head circumference, neck length, neck circumference and neck volume). Participants were assessed for heading (HeadCount) and cognitive performance (Cogstate) on up to 7 visits over a period of two years. Principal components analysis (PCA) was performed on 8 neck strength and anthropometric measures. We used generalized estimating equations to test the moderation effect of each of the three PCs on 8 previously identified adverse associations of 2-week and 12-month heading estimates with cognitive performance (psychomotor speed, immediate verbal recall, verbal episodic memory, attention, working memory) and of unintentional head impacts on moderate to severe central nervous system symptoms. 3 principal components (PC's) account for 80% of the variance in the PCA. In men, PC1 represents head/neck anthropometric measures, PC2 represents neck strength measures, and PC3 represents the flexor/extensor (F/E) ratio. In women, PC1 represents neck strength, PC2 represents anthropometrics, and PC3 represents the F/E ratio. Of the 48 moderation effects tested, only one showed statistical significance after Bonferroni correction, which was not robust to extensive sensitivity analyses. Neither neck strength nor anthropometrics mitigate adverse associations of soccer heading with cognitive performance in adult amateur players.

Sticking the landing: A comparison of shod vs barefoot landing kinetics and foot muscle characteristics in gymnasts, cheerleaders, and non-athletes.

The ability to control landings and stabilize quickly is essential in sports like gymnastics and cheerleading, where landing quality impacts scores. The similarities and contrasts between these sports, where one trains primarily barefoot and the other shod, may increase understanding of the kinetic role of the foot during landings. Sixteen gymnasts (GYM), sixteen cheerleaders (CHR), and sixteen non-athletes (NAT) performed single-foot shod and barefoot drop landings onto a force plate. Foot muscle strength was assessed using a custom test and ultrasound imaging was used to measure six foot muscles. Group differences in muscle sizes and strength measurements were compared using one-way ANOVAs (α = 0.05). Landing mechanics metrics were evaluated using 3 x 2 between-within ANOVAs (α = 0.05). Pairwise comparisons were made using Tukey post-hoc tests. Barefoot landings resulted in greater peak vertical ground reaction force (pVGRF) and lower time to pVGRF (TTpVGRF). Significant group main effect differences were found between GYM and NAT for all kinetic measures (GYM: shorter time to stability (TTS) and TTpVGRF, and greater pVGRF), while no significant differences in landing kinetics were found between CHR and either GYM or NAT. No interactions were found between group and condition. GYM and CHR had significantly greater summed foot muscle size than NAT, however, only CHR displayed significantly greater toe flexion force than NAT. Our data suggests that while wearing shoes does not affect groups differently, footwear reduces initial peak VGRFs but does not influence later stabilization times.

Towards a comprehensive biomechanical assessment of the elderly combining in vivo data and in silico methods.

The aging process is commonly accompanied by a general or specific loss of muscle mass, force and/or function that inevitably impact on a person's quality of life. To date, various clinical tests and assessments are routinely performed to evaluate the biomechanical status of an individual, to support and inform the clinical management and decision-making process (e.g., to design a tailored rehabilitation program). However, these assessments (e.g., gait analysis or strength measures on a dynamometer) are typically conducted independently from one another or at different time points, providing clinicians with valuable yet fragmented information. We hereby describe a comprehensive protocol that combines both in vivo measurements (maximal voluntary isometric contraction test, superimposed neuromuscular electrical stimulation, electromyography, gait analysis, magnetic resonance imaging, and clinical measures) and in silico methods (musculoskeletal modeling and simulations) to enable the full characterization of an individual from the biomechanical standpoint. The protocol, which requires approximately 4h and 30min to be completed in all its parts, was tested on twenty healthy young participants and five elderlies, as a proof of concept. The implemented data processing and elaboration procedures allowing for the extraction of several biomechanical parameters (including muscle volumes and cross-sectional areas, muscle activation and co-contraction levels) are thoroughly described to enable replication. The main parameters extracted are reported as mean and standard deviation across the two populations, to highlight the potential of the proposed approach and show some preliminary findings (which were in agreement with previous literature).

Effect of High-Intensity Interval Training in Patients with Back Pain: A Systematic Review

Back pain has become the most common disabling condition that increases the burden of the healthcare sector despite the various treatments and healthcare resources devoted to back pain. The current review clarifies the effects of high-intensity interval training on back pain. A systematic search using PubMed, Scopus, Cochrane, and ERIC databases was done up to March 2023. Studies included in the meta-analysis if the study is a control/clinical trial, has full text available in the English language, has samples with back pain, and has high-intensity interval training as a treatment protocol, including outcome measures of pain, disability, function/activity level, exercise capacity, and abdominal and back muscle strength. Unpublished research papers, conference articles, dissertations, and theses met the exclusion criteria. Studies that included participants with back pain caused by particular diseases or disorders were not eligible. Out of the 14,943 records that were initially found, only 4 articles (PEDro score = 6 to 8) were found to be eligible. It was found that there are small to larger effect sizes in improving pain, disability, ability to exercise, physical functions, and strength of the back and abdominal muscles. It has been observed that high-intensity interval training improves a number of back pain-related symptoms, making it a useful treatment plan for people with back pain.

Effect of kettle bells and battle rope training on grip strength and body composition among university volleyball players

The current research is to examine the possible impacts of High-Intensity Interval Training (HIIT) using battle ropes and kettlebells on body composition and grip strength. The aforementioned workout regimen's influence will be assessed by focusing on these two chosen variables, which are considered essential elements of interest. Existing research suggests that HIIT may have a beneficial effect on both body composition and grip strength, based on current hypotheses. The fundamental concept is that HIIT may induce favorable alterations in body composition, such as increases in lean muscle mass and reductions in body fat. This is due to its structure of brief intervals of very vigorous exercise followed by short periods of rest. HIIT has the ability to improve grip strength, which is an important measure of upper body strength and endurance. The experimental design facilitates the examination of many physical attributes by delivering pre- and post-tests to participants in both groups. The factors under investigation include grip strength (measured using handgrip dynamometers), and body composition (measured using skinfold callipers). The rationale behind our study involves the assessment of triceps strength as well as the strength of the left and right hand grips

Quantitative measurement of cation-mediated adhesion of DNA to anionic surfaces.

Anionic polyelectrolytes, such as DNA, are attracted to anionic surfaces in the presence of multivalent cations. A major barrier toward molecular-level understanding of these attractive interactions is the paucity of measurements of the binding strength. Here, atomic force microscopy-based single molecule force spectroscopy was used to quantify the binding free energy of double-stranded DNA to an anionic surface, with complementary density functional theory calculations of the binding energies of metal ion-ligand complexes. The results support both electrostatic attraction and ion-specific binding. Our study suggests that the correlated interactions between counterions are responsible for attraction between DNA and an anionic surface, but the strength of this attraction is modulated by the identity of the metal ion. We propose a mechanism in which the strength of metal-ligand binding, as well as the preference for particular binding sites, influence both the concentration dependence and the strength of the DNA-surface interactions.

Разработка нового метода измерения напряженности электрического поля на основе сдвоенного электроиндукционного датчика

A new method for measuring electric field strength is proposed. The method is based on the mean value measurement method, which uses a dual electroinduction spherical sensor. The use of the dual sensor for the method implementation allows to extend the functionality of the method by mean value. The method of measurement by the mean value assumes simultaneous measurement of two values of intensity E1 and E2 in one point of electric field with opposite sign errors. As the theory of construction of the new method has shown, it is possible to determine not only the measurement result as an average of two values of the strengths, but also to estimate the error of the measurement result and tentatively determine the distance to the field source. In order to determine the distance to the field source, a coefficient of the ratio of the two found strengths at each point of the field is introduced, by which the empirical dependence of the relative distance to the field source is found. The relative distance is the ratio between the radius of the spherical sensor and the distance to the field source. By determining the relative distance at each measuring point according to this relationship and substituting it into the known expression for the error, the error of the result at the measuring point is determined. The relative distance is also used to determine the distance to the field source. Thus, the new method of measurement allows to increase the accuracy of measurement of electric field strength, determined by the relative distance to the source of the field.

Carpal Tunnel Syndrome with Thenar Atrophy: Alternative Methods for Early Diagnosis and Surgical Treatment Follow-up

The objective of this study is to test the applicability of Mechanomyographic (MMG) sensors for the diagnosis of Carpal Tunnel Syndrome (CTS) as well as for the follow-up of the post-surgical evolution. After reviewing the literature, three types of MMG sensors (force sensor, accelerometer and infrared) had been selected to compare with the Electromyographic (EMG) signal widely used in clinical evaluation. Three tests (two static and one dynamic) were then defined to evaluate thenar atrophy and thumb opposition strength as well as grip strength. This paper makes a description of the tests that had been carried out, starting from the procedure implemented for the application of the sensors and ending at the method used for sensor readout. Preliminary results obtained from a sample of twelve volunteers, which includes one with CTS surgery performed less than six months ago, are promising namely those from the measurement of thumb opposition strength.

Agricultural resources in focus: Eco-friendly bioplastic synthesis from corn starch

The current research focuses on the development of bioplastics from agricultural resources like banana peels, potato peels and corn starch. The specific focus here is the utilization of agricultural resources into bioplastics as an eco-friendly alternative to conventional plastics. The main objective of this research is to explore the manufacturing of biodegradable plastics by utilizing these materials. The formation of bioplastics from banana and potato peels is not as successful, while notably consistent formation for bioplastics derived from corn starch. The additional research has been conducted on corn starch based bioplastic films. The impact of various glycerol amounts (0.2 g to 0.8 g) was studied concerning the measurement of tensile strength (1.52 MPa to 5.08 MPa) in corn starch-derived bioplastics. The physico-chemical properties, availability of FT-IR functional groups (C-O-H, O-H, C-H, C = O, CONH, C-O, and C-O-C) and SEM analysis are confirming bioplastic films surface derived from corn starch and compared to existing literature. Furthermore, the research includes solubility and biodegradability tests were determined the most suitable and preferred agricultural resources for biodegradable plastic production.

Reliability and Validity of the Martin Vigorimeter for Grip Strength Measurement in Korean Adults.

Grip strength is important for fine motor skills, and one of the measurement tools for grip strength is the Martin Vigorimeter (MV) dynamometer. Studies on establishing the reliability and validity of the MV in Koreans are limited. We aimed to establish the reliability and validity of the MV for grip strength measurement in healthy Korean adults by comparing it with the Jamar dynamometer, the standard tool used by the American Society of Hand Therapists. In total, 99 healthy participants (50 men and 49 women) were enrolled. Grip strength was measured using the Jamar dynamometer and MV. Reliability and validity were assessed using the intraclass correlation coefficient (ICC) and minimal detectable change (MDC). The correlation between the measurements of the instruments was analyzed using Pearson's correlation. The effect of hand anthropometry was evaluated, and the conversion equation between the instruments was calculated. MV showed excellent reliability (ICC > 0.90, p < 0.001) and validity with a high correlation (0.7 ≤ r < 0.9) with the Jamar dynamometer. The MDC was acceptable for detecting minimal clinically important differences (< 19.5%) in both instruments (Jamar: 3.4%-6.7%, MV: 3.8% to 6.3%). The grip strength measured using the MV was independent of hand anthropometry, unlike that using the Jamar dynamometer. This study provides insights into the relationship between the Jamar and MV instruments for measuring grip strength in Koreans. The MV is a viable alternative to the Jamar dynamometer in Koreans, offering not only reproducible and reliable measurements of grip strength but also the advantage of being unaffected by variations in hand anthropometry.

Physical Fitness as a Predictor of Disability Retirement: A 9-Year Register Linked Follow-Up Study.

To prospectively examine the association between physical fitness and risk of disability retirement in a large population-based cohort. This study utilized data from Health 2011 survey Physical Activity subsample (n = 4898), combined with information on disability retirement derived from 2 national registers. In total, 2455 individuals aged 18-74years underwent the physical fitness test protocol concerning measures of cardiorespiratory fitness, muscle strength, and balance. The outcome variable was disability retirement, during the follow-up period of 9years. After excluding those not at risk of disability retirement (ie, age ≥63 y) or who had already been granted disability pension, and those who had not completed the fitness protocol, the analytical sample included 1381 participants. Data were analyzed using Cox regression model with SPSS (version 29). During the 9-year follow-up period, 61 individuals (4.4%) transitioned to a disability retirement. Cox regression analysis showed an association between the various physical fitness subdomains and the risk of disability retirement. In model 1, all fitness tests were associated with the risk of disability retirement, except the one-leg stand test with hazard ratios ranging from 1.69 (95% CI, 0.86-3.34) to 5.75 (95% CI, 1.84-17.90). Further adjustment for sociodemographic, health behavior, and health-related covariates attenuated the associations and statistical significance was lost, except for the vertical jump test (hazard ratio = 4.33; 95% CI, 1.32-14.10) and 6-minute walk test (hazard ratio = 3.81; 95% CI, 1.35-10.70). These findings highlight the importance of physical fitness for preventing work disability.

No immediate change in systemic cytokines following an eccentric muscle training session in people with multiple sclerosis.

Eccentric muscle contractions elicit distinct physiological responses, including modulation of the cytokine profile. Although relevant for rehabilitation, the effect of eccentric muscle training on the immune system has never been investigated in multiple sclerosis (MS). Examine the immediate cytokine response of interleukin-4 (IL-4), IL-6, IL-10, IL-17a, interferon-gamma, and tumor necrosis factor-alpha after a moderate eccentric training session in individuals with MS. Additionally, further investigate the association between systemic cytokine levels at rest and clinical measures of mobility and lower limb functional strength. Observational study. The first session included blood sampling for baseline cytokine measures. Subsequently, the participant completed a battery of clinical assessments related to mobility and lower limb strength, that is, the Timed-Up-and-Go Test, Five-Repetition-Sit-to-Stand-Test (5STS), Four-Square-Step-Test, and Two-Minute-Walk-Test. The second session included the eccentric exercise training session, followed by a second blood sampling to assess the acute cytokine response to the eccentric training bout. This session comprised 10 exercises concentrating on the strength of the trunk and lower extremities. Twenty-seven people with MS (pwMS), with a mean age of 40.1 years, participated in the study. No difference was demonstrated in the cytokine concentration values between baseline and immediately after the eccentric training session. The 5STS explained 30.3% of the variance associated with interferon-gamma, 14.8% with IL-4, and 13.8% with IL-10. An eccentric training bout does not impact cytokine concentration in the blood and, consequently, does not boost a pro-inflammatory response, thus, it can be performed on pwMS in a rehabilitation setting.

Relationship between bone mineral density and body compositions, strength, type of sport competition, vitamin D and birth-related factors in elite Polish track and field athletes: a cross-sectional study

Purpose: The purpose of this investigation was to characterize the forearm bone mineral density (BMD) in Elite Competitive Track and Field Athletes. Somatic, body composition, hand grip strength birth variables, and blood vitamin D levels were also analyzed. Methods: In this cross-sectional study, the participants were 30 elite Polish athletes. Somatic measurements, body composition by kinanthropometry, and bioelectrical impedance were taken. Forearm bone parameters were measured by densitometry in two points distal (dis) and proximal (prox). Measurement of hand grip strength (HGS) on a dynamometer was performed. Birth-related factors such as birth weight and length of breastfeeding were collected by direct interview. Vitamin D concentration was assessed by blood test. Results: Low BMD was not observed in the distal part of the forearm. Significantly more frequent low BMD prox were found in endurance athletes (EA) group compared to throwing athletes group (TA) (χ2=10.8; P = .001; Φ= .6). Inadequate vitamin D levels were significantly higher in the EA group compared to TA (χ2=10.8; P = .001; Φ= .6). The main parameters affecting BMD dis and BMC prox of men athletes were HGS (kg) and type of sports competition (Rˆ2 adj= .93; .89). BMC dis was affected by the type of sports competition (Rˆ2 adj= .83). There was also a significant relationship between the T-score prox and the HGS (Rˆ2 adj= .98). In the case of women, the main parameters affecting BMD prox were menarche age and body composition (Rˆ2 adj= .93). The BMC prox was affected by the age of the menarche (Rˆ2 adj= .73). Conclusions: In conclusion, the present study found that the highest BMD of the forearm bones was characterized by men and women athletes training in athletic throws relative to running sports. Screening assessment of bone mineral status should be included in sports diagnostics.

Ориентационное упрочнение эпоксидной смолы в процессе полимеризации

Experimental studies of the influence of mechanical deformation during the polymerisation process of ED-20 epoxy resin on the mechanical properties of cured specimens. Measurements of mechanical stress-strain dependence and ultimate strength were carried out in automatic mode using the Devotrans BP D NU testing machine. Experimental measurements of the mechanical stress-strain dependence for the samples subjected to stretching during polymerisation allow us to conclude that the ultimate strength of the cured samples increases by 1.5 to 2.5 times depending on the degree of stretching and the stage of polymerisation at which the stretching was carried out. At the same time, the Young’s modulus of the cured specimens changes insignificantly. This effect can be exploited in the manufacture of epoxy resin products, including composites based on epoxy binders.

Do players with superior physiological attributes outwork their less-conditioned counterparts? A study in Gaelic football.

This study investigated the association of physiological attributes with in-game workload measures during competitive Gaelic football match-play. Fifty-two male developmental level Gaelic football players (mean ± SD; age: 22.9 ± 3.8 years) underwent measurements of anthropometric characteristics, running speed, muscular strength and power, blood lactate (BLa), running economy and aerobic capacity during two separate testing visits. Global Positioning System units (18-Hz) were used to record players in-game workloads during a competitive match 1-week following the baseline physiological assessments. Results indicated that players body fat percentage, drop jump height (DJ) and running velocity at 4 mmol · L-1 BLa were significantly associated with the number of high-speed runs completed (Adjusted R2 26.8% to 39.5%; p < 0.05) while 20 m running speed, running velocity at 2 mmol · L-1 BLa and DJ were significantly associated with the number of accelerations completed (Adjusted R2 17.2% to 22.0%; p < 0.05) during match-play. Additionally, aerobic capacity and body fat percentage were significantly associated with total distance (Adjusted R2 14.4% to 22.4%; p < 0.05) while body fat percentage, DJ and 20 m running speed were significantly associated with high-speed distance (Adjusted R2 17.8% to 22.0%; p < 0.05). Players were also divided into higher-standard and lower-standard groups using a median split of these physiological attributes. Players in the higher-standard groups completed significantly more high-speed runs and accelerations and covered significantly larger total and high-speed distances (+10.4% to +36.8%; ES = 0.67 to 0.88; p < 0.05) when compared to the lower-standard groups. This study demonstrates that superior levels of physical conditioning are associated with larger in-game workloads during Gaelic football match-play.

Effects of local vibration stimulation on muscle recovery and hypertrophy.

[Purpose] Optimization of post-training muscle recovery is important in clinical rehabilitation and sports science. In this study, we investigated the effects of local vibration stimulation on post-training muscle recovery and hypertrophy in healthy adults, focusing on the upper extremities. [Participants and Methods] The study included 20 healthy students categorized into the control and vibration stimulation groups. Both groups underwent training, including elbow flexion. The vibration stimulation group received immediate post-training local vibration stimulation. Evaluation included measurement of upper arm circumference, muscle strength, muscle hardness, and ultrasonographic imaging. [Results] Our results showed that local vibration stimulation increased muscle luminosity but had no significant effect on muscle strength, hardness, or thickness. [Conclusion] Post-training vibration stimulation may promote muscle growth and recovery by stimulating blood flow and improving nutrient and oxygen supply to muscles.