Acta of bioengineering and biomechanics最新文献_第3页

4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01 DOI: 10.37190/abb-02229-2023-02

Kayla P. Sisneros, Pratibha S. Maurya, Evan B. Johnson, Benton R. Ford, Ty B. Palmer

{"title":"Age-related differences in vertical jump height and handgrip strength measurements","authors":"Kayla P. Sisneros, Pratibha S. Maurya, Evan B. Johnson, Benton R. Ford, Ty B. Palmer","doi":"10.37190/abb-02229-2023-02","DOIUrl":"https://doi.org/10.37190/abb-02229-2023-02","url":null,"abstract":"Purpose This study aimed to examine the effects of age on vertical jump height and handgrip strength measurements in women. A secondary aim was to investigate the correlations between vertical jump height and handgrip strength. Methods Twenty young (21.5 ± 2.8 years) and twenty older (67.0 ± 5.5 years) healthy women participated in this study. Handgrip contractions were used to assess strength measurements of peak force and rate of force development at different time intervals. Vertical jumps were performed on a jump mat. The jump mat measured vertical jump height based on flight time. Results The older women had lower vertical jump height (P < 0.001) and handgrip peak force (P = 0.028) and rate of force development values (P = 0.003-0.016) than the younger women. A larger difference was observed between the groups for vertical jump height (41%) than handgrip peak force and rate of force development (12-17%). Of all the strength measurements, handgrip rate of force development at 200 ms in the young (r = 0.502, P = 0.024) and older (r = 0.446, P = 0.049) women exhibited the strongest correlation with vertical jump height. Conclusions This investigation showed significantly lower vertical jump height and handgrip peak force and rate of force development values in older compared to younger women. Interestingly, the difference between age groups was larger for jump height than handgrip peak force and rate of force development. This suggests that vertical jump performance may be more severely affected by age than handgrip strength characteristics.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136304045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tarsus and knee setting in children at the final stage of early childhood taking into account the six-month age ranges 考虑到六个月的年龄范围，儿童早期最后阶段的跗关节和膝关节设置

4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01 DOI: 10.37190/abb-02233-2023-03

Ewa Puszczałowska-Lizis, Sabina Lizis, Wiolletta Mikuľáková

{"title":"Tarsus and knee setting in children at the final stage of early childhood taking into account the six-month age ranges","authors":"Ewa Puszczałowska-Lizis, Sabina Lizis, Wiolletta Mikuľáková","doi":"10.37190/abb-02233-2023-03","DOIUrl":"https://doi.org/10.37190/abb-02233-2023-03","url":null,"abstract":"Purpose The study aimed to analyze the tarsus and knee setting in 3-year-old girls and boys, taking into account the six-month age ranges. Methods The study involved 800 children (400 girls, 400 boys) recruited from randomly selected preschools in the in the Podkarpackie region. Study group was divided into two age ranges: 1st group (children aged 3.00-3.49 years) and 2nd group (children aged 3.50-3.99 years). Baseline goniometer (Fei Fabrication Ltd., USA) was used as primary research tool. The data were analyzed based on Mann Whitney U test and Student’s t test for independent samples. Results Sex differences concern only the tibio-calcaneal angle in children in the 2nd age group (right: p<0.001) and left p<0.001). Statistically significant differences in both girls (right lower limb: p=0.003; left lower limb: p=0.002), and boys (right lower limb: p=0.001; left lower limb: p=0.001) were found. Conclusions Boys were characterized by greater valgus of the tarsus of the right and left foot than girls. Knees of girls and boys in the 1st age group were characterized by greater valgus, compared to children from the 2nd age group.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136303743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Muscle Activity During Rowing Stroke Phases 划船阶段的肌肉活动分析

4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01 DOI: 10.37190/abb-02269-2023-02

Urszula Czajkowska, Ewelina Świątek-Najwer, Ludomir Jankowski

{"title":"Analysis of Muscle Activity During Rowing Stroke Phases","authors":"Urszula Czajkowska, Ewelina Świątek-Najwer, Ludomir Jankowski","doi":"10.37190/abb-02269-2023-02","DOIUrl":"https://doi.org/10.37190/abb-02269-2023-02","url":null,"abstract":"Purpose Rowing engages large muscle groups, and EMG analysis is used to assess athletes' condition and refine sports technique. The aim of the experiment was to evaluate the muscle activation level during different phases of the rowing cycle on an ergometer. Methods In a study involving one professional and five amateurs, the mean EMG amplitudes from the quadriceps, gastrocnemius, biceps, and triceps brachii were analyzed during different phases of rowing. A comparison was made between the degree of muscle engagement during the exercise between the professional and inexperienced individuals, as well as among the different individuals during recordings obtained at different rowing speeds. The correlation coefficient between the values recorded using a strain gauge and the EMG amplitude recorded from the surface of the biceps and triceps brachii muscles was evaluated. Results The muscle activation pattern during rowing has a predictable character. A difference in the muscle activation pattern during rowing between the professional and amateurs was observed. The EMG signal is correlated with the force recorded by the resistive strain gauge only in the experienced rower at a pace of 20 and 25 cycles per minute. Conclusions Electromyographic analysis can be useful for assessing the correctness of rowing techniques. The activation pattern of muscles during rowing has a predictable nature. The force generated by the participants increases with an increase in rowing frequency.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136301473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of muscle activity during rowing stroke phases. 分析划船击球阶段的肌肉活动。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Urszula Czajkowska, Ewelina Świątek-Najwer, Ludomir Jankowski

{"title":"Analysis of muscle activity during rowing stroke phases.","authors":"Urszula Czajkowska, Ewelina Świątek-Najwer, Ludomir Jankowski","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Rowing engages large muscle groups and electromyography (EMG) analysis is used to assess athletes' condition and refine sports technique. The aim of the experiment was to evaluate the muscle activation level during different phases of the rowing cycle on an ergometer.Methods: In a study involving one professional and five amateurs, the mean EMG amplitudes from the quadriceps, gastrocnemius, biceps and triceps brachii were analyzed during different phases of rowing. A comparison was made between the degree of muscle engagement during the exercise between the professional and inexperienced individuals as well as among the different individuals during recordings obtained at different rowing speeds. The correlation coefficient between the values recorded using a strain gauge and the EMG amplitude recorded from the surface of the biceps and triceps brachii muscles was evaluated.Results: The muscle activation pattern during rowing has a predictable character. A difference in the muscle activation pattern during rowing between the professionals and amateurs was observed. The EMG signal is correlated with the force recorded by the resistive strain gauge only in the experienced rower at stroke rates 20 and 25 [1/min].Conclusions: Electromyographic analysis can be useful for assessing the correctness of rowing techniques. The activation pattern of muscles during rowing has a predictable nature. The force generated by the participants increases with an increase in rowing frequency.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 1","pages":"117-126"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Balance control via tactile biofeedback in children with cerebral palsy. 通过触觉生物反馈控制脑瘫儿童的平衡。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Hande Argunsah, Begum Yalcin

{"title":"Balance control via tactile biofeedback in children with cerebral palsy.","authors":"Hande Argunsah, Begum Yalcin","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Children with cerebral palsy have limitations in utilizing neural information to perform smooth movement and maintain balance during walking. This study aimed to develop a wearable sensor that tracks balance continuously and provides haptic biofeedback to its user through real-time vibration stimulus to assist patients with balance and postural control impairments such as cerebral palsy.Methods: Twelve children with cerebral palsy and 12 age-matched typically developed children used the sensor during walking at a self- -selected speed. The lower extremity joint kinematics, center of mass, and spatial-temporal parameters were recorded with Xsens MVN during \"with\" and \"without\" biofeedback conditions.Results: The sensor did not disturb healthy gait. Pearson correlation coefficient and Root Mean Square Error techniques showed that biofeedback regulated the gait parameters and trunk stability of the CP group. The extended stance percentage (without BF: 73.91% ± 10.42, with BF: 63.53% ± 2.99), step width (without BF: 0.20 m ± 0.05, with BF: 0.18 m ± 0.07), and step time (without BF: 1.55 s ± 1.07, with BF: 0.73 s ± 0.14) parameters decreased. Similarly, cadence and walking speed increased.Conclusions: Obtained results indicated that this wearable sensor can be integrated into the physical therapy and rehabilitation process of children with balance and postural control impairments to improve motor learning and balance control. The present findings contribute to a better understanding of the adaptation of innovative engineering applications with rehabilitation processes, which, in turn, could assist patients with balance impairments and facilitate their integration into society.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 1","pages":"161-171"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anthropometric profile of the top-class male handball players participating in the Olympic Games Tokyo 2020. 参加 2020 年东京奥运会的顶级男子手球运动员的人体测量特征。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Paweł Krawczyk, Michał Sieńko

{"title":"Anthropometric profile of the top-class male handball players participating in the Olympic Games Tokyo 2020.","authors":"Paweł Krawczyk, Michał Sieńko","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The purpose of the study was to try to determine the factors that differentiate the height, weight, BMI and age of high-level handball players participating in the Tokyo 2020 Olympic Games.Methods: The study included handball players participating in the Tokyo 2020 Olympic Games. The study material consisted of data on athletes' body height, body weight, age and BMI. The collected study material was analyzed about the position of the game, quarter and semester of the birth, continental location of the country and geographical region. In parametric distribution, Student's t-test and ANOVA were used. In non-parametric variables, the Mann-Whitney U-test and the Kruskal-Wallis test were used.Results: The highest average heights, weights and BMIs were found in players playing in the pivot position, while the lowest were found in wing players. Interactions were shown within the body weight and BMI of the athletes. Players from Europe have the highest weight and BMI in the second semester of birth, while other players' highest results were in the first semester.Conclusions: The factors that most strongly differentiate body height, body weight, and BMI are playing positions. Factors that differentiate height and weight are the continental location and region of the country represented.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 2","pages":"69-77"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Are the mechanical properties of Achilles tendon altered in CrossFit athletes? Reliability and accuracy of myotonometry. CrossFit 运动员跟腱的机械特性是否发生改变？肌力测定法的可靠性和准确性。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Sebastian Szajkowski, Jarosław Pasek, Michał Dwornik, Mateusz Zajączkowski, Grzegorz Cieślar

{"title":"Are the mechanical properties of Achilles tendon altered in CrossFit athletes? Reliability and accuracy of myotonometry.","authors":"Sebastian Szajkowski, Jarosław Pasek, Michał Dwornik, Mateusz Zajączkowski, Grzegorz Cieślar","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Tendons adapt to loads affecting them by changing tendons' mechanical and morphological properties. The aim of the study was to investigate the influence of involvement in sport activities in the form of CrossFit training by individuals of different age upon the mechanical properties of Achilles tendon.Methods: 231 people participated in the study. One group consisted of subjects who trained CrossFit as amateurs, the other group comprised subjects who were not physically active. Achilles tendon was studied for various positions of the ankle joint: 0° DF/PF, 10° DF, 20° DF, 20° PF and 40° PF. The following mechanical and viscoelastic tendon properties were measured using MyotonPRO: frequency [Hz], stiffness [N/m], decrement [log], relaxation time [ms] and creep [De]. The results have been compared in reference to physical activity, BMI, age and length of training history.Results: Both the tension and stiffness increased with degree of Achilles tendon stretching and decreased as it contracted. Higher values have been noted in the group of people in training and with higher BMI values. The elasticity of Achilles tendon decreased with plantar flexion increase. Lower elasticity has been recorded in the group in training and with higher BMI. No significant influence of age and length of training history upon the parameters achieved has been noted.Conclusions: The specificity of CrossFit training and accompanying mechanical load result in development of adaptation changes in Achilles tendon, in the form of its higher tone/tension and stiffness, as well as lower elasticity.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 2","pages":"103-113"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Finite element analysis on pushing the molar backwards using invisible aligner with different migration displacement. 使用隐形矫治器向后推动臼齿的有限元分析，不同的移动位移。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Jiwu Zhang, Lili Ma, Yuzhongxiu Ren, Yuqing Zhou, Rong Wei, Qiguo Rong

{"title":"Finite element analysis on pushing the molar backwards using invisible aligner with different migration displacement.","authors":"Jiwu Zhang, Lili Ma, Yuzhongxiu Ren, Yuqing Zhou, Rong Wei, Qiguo Rong","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: This paper examines the biomechanical mechanism behind the effect of the invisible aligner technique on tooth movement processes.Methods: To compare the effects of different target positions on tooth movement and the periodontal ligament (PDL), two kinds of aligners were designed to provide displacements of 0.2 mm (Model A) and 0.3 mm (Model B). Different displacements of the maxillary second molar were simulated using the finite element (FE) method.Results: The results of numerical simulations showed that the maximum stress was in the PDL of the distal surface and the palatal surface. The stress of the PDL in Model B was larger than Model A, with the displacement of the second molar 0.027 mm in Model A, by 44.9% lesser than that in Model B.Conclusions: The aligner that provided a displacement of 0.2 mm was more suitable for pushing the second molar backward in the initial stage. During the tooth movement processes, the displacement of the crown was larger than that of the root and the displacement decreased gradually from the crown to the root. In addition, the displacement and rotation of teeth during orthodontic treatment were measured and analysed.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 2","pages":"115-123"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinematic analysis of the basketball jump shot with increasing shooting distance: comparison between experienced and non-experienced players. 随着投篮距离的增加，篮球跳投的运动学分析：有经验和无经验球员之间的比较。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

André Caseiro, Cíntia França, Ana Faro, Beatriz Branquinho Gomes

{"title":"Kinematic analysis of the basketball jump shot with increasing shooting distance: comparison between experienced and non-experienced players.","authors":"André Caseiro, Cíntia França, Ana Faro, Beatriz Branquinho Gomes","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Basketball jump shot success is determined mainly by the height, velocity and angle of ball release. To achieve a successful shot, these variables need to be adjusted according to the player's position on the court. This study aimed to identify the changes in kinematics variables of the basketball jump shot with an increasing shooting distance performed by players with varying skill levels.Methods: Seventeen male subjects, divided into experienced (N = 9), and non-experienced (N = 8) players, performed three successful jump shots from the free-throw line (4.23 m) and the 3-point line (6.75 m). All attempts were recorded at 120 Hz with a camera perpendicularly to the sagittal plane, and the kinematics variables were calculated using Tracker software.Results: The increase in shooting distance shows a decrease in height and angle of ball release. In contrast, the velocity of ball release increased for both groups at longer distances. Experienced players presented a higher mean value of the height of ball release in both distances, which allowed for a lower velocity of ball release.Conclusions: The most meaningful improvement for players training the jump shot technique is to increase the release height of the ball, jumping higher and shooting the ball near the peak of the jump.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 2","pages":"61-67"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rheological and tribological behavior of polyacrylamide-base solutions for artificial synovial fluid. 用于人工滑液的聚丙烯酰胺基溶液的流变学和摩擦学行为。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Marcin Klekotka, Monika Izabela Grykin, Jan Ryszard Dąbrowski

{"title":"Rheological and tribological behavior of polyacrylamide-base solutions for artificial synovial fluid.","authors":"Marcin Klekotka, Monika Izabela Grykin, Jan Ryszard Dąbrowski","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: This paper presents tribological and rheological analysis results of artificial synovial fluid base solutions. Special attention was paid to polyacrylamide preparations with different molecular weights and concentrations.Methods: Tribological tests were conducted using the Al2O3-CoCrMo friction pair in the presence of investigated lubricants. Confocal microscopy was used to analyze and assess of volume, depth, and width of wear traces. Moreover, the viscosity and viscoelasticity tests of analyzed solutions were carried out. The rheological measurements were focused on the oscillatory tests, which allowed us to determine the elasticity modulus (G') and viscosity (G″).Results: Viscoelastic nature of the tested preparations depends on the strain rate. It has been shown that elastic properties dominate at higher frequencies. The molecular weight of the polymer has a particular influence on these properties. The most promising results were obtained for 6% and 8 % high molecular weight polyacrylamide compositions.Conclusions: However, all tested polyacrylamide solutions show better rheological and tribological characteristics than commercial preparation based on hyaluronic acid.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 2","pages":"49-59"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0