Weight Training Research Articles

Relationship of the Degree of Sarcopenia with the Severity of Nonalcoholic Fatty Liver Disease and Cardiometabolic Risk in Adolescents

The association between nonalcoholic fatty liver disease (NAFLD) and sarcopenia has been suggested. We investigated sarcopenia’s impact on NAFLD severity and its relationship with cardiometabolic risk in adolescents. We conducted a retrospective study on 122 patients aged 13–18 years and diagnosed with both NAFLD and sarcopenia by laboratory tests, abdominal ultrasound (US), and multifrequency bioelectrical impedance analysis. Sarcopenia was stratified into tertiles based on the skeletal muscle-to-fat ratio (MFR), NAFLD severity was established by the US, and cardiometabolic risk was assessed by the triglyceride–glucose (TyG) index and the atherogenic index of plasma (AIP). Compared with the other patients, those in the lower MFR tertiles exhibited a greater severity of NAFLD (p < 0.001) and significantly higher TyG index and AIP. The independent effect of MFR was observed to have a negative correlation with the severity of NAFLD (p < 0.001). Based on the aforementioned results, the degree of sarcopenia can be considered as one of the risk factors of severe NAFLD and might be an indicator of cardiometabolic risk in adolescents. Weight training to reach the amount of muscle mass could be included in the treatment strategies to improve or prevent NAFLD in adolescents with sarcopenia.

Circadian Rhythm and Physical Fatigue Separately Influence Cognitive and Physical Performance in Amateur Athletes

Background/Objectives: Circadian rhythm (CR) influences various physiological functions, including physical and cognitive performance, which fluctuate throughout the day. The present study aimed to investigate the combined and separate effects of CR and physical fatigue on cognitive and physical performance. Methods: A sample of 18 amateur athletes was subjected to a series of tests at three different times of the day: morning, afternoon, and evening. Fatigue was induced following an isokinetic concentric exercise combined with a 20 min treadmill run, followed by assessments of selected physical and cognitive tasks. Results: A repeated measure ANOVA did not reveal an interaction between CR and fatigue in cognitive performance (p > 0.05). However, a significant main effect of fatigue was observed in visual reaction time (VisRT) across all three timepoints. Moreover, peak torque (PT) and the peak torque fatigue index (PTFI) showed significant differences between the three times of the day, peaking in the evening. Conclusions: Although we found no interaction between CR and the physical fatigue state on selected cognitive parameters at the three times of the day, a separate effect of fatigue on cognitive performance was identified. Additionally, physical parameters exhibited peak values occurring in the evening hours. Future research should further explore underlying mechanisms that potentially influence cognitive performance at different times of the day.

Investigating Key Factors Influencing Adhesion and Adherence in Weight Training

The practice of weight training can result in many benefits for its practitioners, however the proportion of individuals who practice weight training regularly is low. The objective of this study was to investigate the reasons for adhesion and adherence in weight training. The sample was composed of 75 participants, men and women, who practice weight training, in a gym located in Florianópolis, Brazil. Data was collected using a questionnaire, which resulted in health and quality of life being the main reasons for joining and adhering to weight training. In relation to the characteristics of the gym that contribute to the for adhesion and adherence, the following were identified: the location of the gym, the financial cost, the technical qualifications and the service of the professionals. Through these results, Physical Education professionals will be able to create loyalty strategies for their students, taking into account the reasons for exercising at that location.

Physical therapy approach and non-invasive modalities in treatment of vaginal laxity: a literature review.

Pelvic floor physical therapy (PFPT) and noninvasive modalities can be more safe and available treatments for vaginal laxity (VL) with less risk of postsurgical complications. The purpose of this review is to define the concepts of PFPT and noninvasive modalities, examine the evidence supporting those modalities as a treatment for VL, and evaluate their effectiveness. Between 2002 and 2023, clinical studies including women diagnosed with VL were examined in the Web of Science, Cochrane Library, Scopus, and PubMed databases. Exclusion criteria included studies with no outcomes or inadequate data, procedures, suggestions, editorials, book chapters, letters to editors, reviews, meta-analyses, animal research, and articles in languages other than English. Only seventeen studies have been identified. Four studies have demonstrated the impact of PFPT (low- and medium-energy radiofrequency (RF), ultrasound, low-energy laser treatment, par sacral stimulation, the knack method, and pelvic floor exercises), and thirteen studies have discussed the impact of noninvasive modalities (RF, combined multipolar RF with pulsed electromagnetic, combined RF and pulsed electromagnetic field, high-intensity focused ultrasound, CO2 laser, combining multipolar RF and hybrid fractional laser, microfocused ultrasound, and the VIVEVE surface-cooled RF) on vaginal laxity. This review indicates many knowledge areas that must be attempted in order to understand the influence of nonstrengthening physical therapy and noninvasive methods on vaginal laxity. In addition to the mechanisms behind their impacts. In addition, we strongly recommend that more clinical trials of high methodological and interventional quality are required to investigate the efficacy of various physical therapy approaches, including electrical stimulation, biofeedback exertion, acupressure, manual therapy, neuromodulation, core exercise therapy, hydrotherapy, well-designed ultrasound therapy protocols, and vaginal weight training.

A spatiotemporal correlation and attention-based model for pipeline deformation prediction in foundation pit engineering

In foundation pit engineering, the deformation prediction of adjacent pipelines is crucial for construction safety. Existing approaches depend on constitutive models, grey correlation prediction, or traditional feedforward neural networks. Due to the complex hydrological and geological conditions, as well as the nonstationary and nonlinear characteristics of monitoring data, this problem remains a challenge. By formulating the deformation of monitoring points as multivariate time series, a deep learning-based prediction model is proposed, which utilizes the convolutional neural network to extract the spatial dependencies among various monitoring points, and leverages the bi-directional long-short memory unit network to extract temporal features. Notably, an attention mechanism is introduced to adjust the trainable weights of spatial-temporal features extracted in the prediction. The evaluation of a real-world subway project demonstrates that the proposed model has advantages compared with current models, particularly in long-term prediction. It improves the Adjusted R2 index averagely by from 19.4 to 61.6%\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\%$$\\end{document} compared with existing models. The proposed model also exhibits a decrease in mean absolute error ranging from 51.5 to 70.3%\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\\%$$\\end{document} compared to others. Experiments and analyses verify that the spatial-temporal dependencies in time series and the attention learning for spatial-temporal features can improve the prediction of such engineering problems.

The impact of 12 weeks of circuit body weight training on athletes’ physical fitness

The purpose of this study is to find out the impact of 12-week circuit body weight training on athletes’ physical fitness. This study used an experimental design with a control group. This experimental model consists of three stages. Firstly, pre-testing the dependent variable before implementing the treatment. Secondly, experimental participants are given experimental treatment, specifically the circuit body weight approach. Thirdly, provide a post-test to measure the dependent variable after treatment. The experimental sample included 25 athletes from various sports who were separated into two treatment groups. The circuit body weight group consisted of 13 samples, while the remaining 12 were trained using conventional direct teaching methods. The data analysis technique begins with calculating the data’s normality. The homogeneity test determines if two data sets contain homogeneous versions. Finally, the Mann-Whitney test compares two similar population means. Calculations using SPSS IBM 26 on data before treatment in the experimental class resulted in a valid sample size of 25 and a score of 48.40 ± 2,931. The experimental group had a valid sample size of 25, with a score of 49.57 ± 2,979. Pre-test data for the control class showed 25 valid samples with a score of 38.7 ± 6,607. Meanwhile, the control class post-test data obtained a valid sample size of 25 with a score 39.43 ± 6.796. The table shows a sig (2-tailed) value of 0.000 < 0.05, indicating a significant difference in physical fitness scores between the experimental and control groups. Additionally, there is a difference in average Physical Fitness results between the Circuit bodyweight training model and the conventional learning model.

Effect of Plyometrics Training on Explosive Strength and Speed Performance of Long Jumpers

The purpose of this study was to assess the effect of plyometric training on explosive strength & speed performance of long jumpers. Various studies suggest that plyometric training improves explosive strength and speed performance. However, the effectiveness of plyometric training depends upon several factors. Integrating plyometric training program aims to provide a comprehensive approach to performance enhancement. Based on their training, Seven male jumpers were divided into 2 groups: a plyometric training group (n=7), a weight training group and a control group (n=7). The program was designed to implement in starting phase of competitive season, where aim to maintaining peak performance and minimizing risk of injuries. The objectives of the study were to determine the effect of plyometric training on explosive strength and speed performance of Long Jumpers. Subjects in each of the training group trained five days per week, whereas control subjects did as usual/traditional training. The data was analyzed by a paired sample t-test. The results showed that all the training treatment of Strength test found elicited significant difference in mean compression while (P<0.05) and the compression of mean in speed test was also found significant difference and (P<0.05) respectively. The findings of this study reveal a significant improvement on both speed and strength performance. The researchers proved that the addition of plyometric training in a routine/traditional training program was more effective in improving of sprint and explosive strength performance. Researchers strongly recommend that athletics coaches implement plyometric training in training schedule to enhance the performance of their athletes.

Usability evaluation of a smart upper limb rehabilitation exercise device for individuals with disabilities.

User-friendly rehabilitation exercise devices can enhance health and quality of life through the convergence of information communication and medical technology. The development of rehabilitation exercise devices accessible to individuals with disabilities is important. We aimed to investigate the convenience, safety, and effectiveness of the developed rehabilitation exercise device for individuals with disabilities. A usability evaluation of the developed rehabilitation exercise device was conducted with five rehabilitation exercise experts and six athletes with disabilities using a questionnaire, the reliability of the revised questionnaire was r=0.87. Qualitative analysis was conducted using semistructured interviews following the testing of the upper limb rehabilitation exercise device by the two user groups. In the usability evaluation survey of the developed rehabilitation exercise device, the results were very positive, with an overall score of 4.25 out of 5. The highest score was assigned to the convenience of the device, followed by the effectiveness of the exercise and the safety of the device. The developed rehabilitation exercise device allows for three types of strength improvement exercises, including isometric, isokinetic, and isotonic exercises, all within a single device. Given that it is constructed with a wire system, it can be adapted to various exercise methods, depending on the type of disability. The device can be used by both nondisabled and disabled individuals, allowing for various exercise methods. The evaluation results indicate that the proposed device is highly versatile and practical.

Effects of circuit weight training by intensity on stress hormones and antioxidant capacity in high-school wrestlers.

We aimed to investigate the effects of 8-week circuit weight training by intensity on blood stress hormones and antioxidant capacity in high-school wrestlers. This study involved 27 male wrestlers with >2 years of wrestling experience who were randomly assigned to either a low intensity (n=13) or a high-intensity circuit weight training group (n=14). The participants performed circuit weight training for 60 min per session, 3 times per week for 8 weeks. The low- and high-intensity circuit weight training exercises were performed at 50%-60% and 70%-80% of one-repetition maximum for 10 stations, respectively, and 8-15 repeated sessions per station were performed in order. No changes were observed in adrenocorticotropic hormone (ACTH), cortisol, epinephrine, and norepinephrine levels between the two training groups. When compared to levels before the training, ACTH and epinephrine levels decreased, whereas cortisol levels increased. However, no difference was observed in norepinephrine levels. Further, no differences were observed in malondialdehyde (MDA) and glutathione peroxidase (GPX) levels between the two groups. However, MDA and GPX levels were increased from those before training. Changes in superoxide dismutase levels were observed between the two groups, but the change was significant only in the high-intensity circuit weight training group. Long-term training did not increase lipid peroxidation, but increased the activity of antioxidant enzymes that defend against oxidative stress. The antioxidant defense system in tissues can be regulated by exercise intensity as well as physical training status.

Sport-Related Injury and Performance Enhancing Substance Use by Young Athletes.

Legal performance enhancing substance (PES) use is increasing in young athletes and may lead to banned PES use. This study examines legal PES use and consideration of banned PES use in young athletes with a season-ending injury (SEI) compared to young athletes with non-SEI/no previous injury. Young athletes sustaining SEI or concussions have increased odds of reporting legal PES use and consideration of banned PES use compared with non-SEI or no injury. Cross-sectional study. Level 4. Cross-sectional study from 2013 to 2020 of athletes aged 6 to 25 years. No association was found between reporting legal PES use or consideration of banned PES use and young athletes with SEI or concussion compared with no injury/non-SEI. 14% of athletes reported legal PES use and 3% reported consideration of banned PES use. In adjusted analysis, athletes who were male (odds ratio [OR], 1.38; 95% CI, 1.16-1.73; P = 0.03), have history of depression (OR, 3.01; 95% CI, 1.26-7.18; P = 0.01), weight train (OR, 1.66; 95% CI, 1.04-2.65; P = 0.03), and believe that athletic ability is influenced by weight (OR, 1.75; 95% CI, 1.08-2.83; P = 0.02) had increased odds of reporting legal PES use. Older (OR, 1.18; 95% CI, 1.03-1.36; P = 0.02) and male (OR, 1.57; 95% CI, 1.02-1.81; P < 0.04) athletes had increased odds of consideration of banned PES use. This study found no increased odds of reported PES use in young athletes with sports-related injury or concussion regardless of injury type or severity. Factors associated with PES use were male sex, age, history of depression, weight training, and belief that weight affects athletic performance. Risk factors associated with PES use in young athletes are essentially unknown. This study can inform pertinent clinical care, education, and policy implementation.

‘It’s not just you come into the gym and do your weight training’: a narrative exploration of muscularity’s role as identity capital

The current study explored muscularity and weight training’s role as capital in people’s identities across various contexts. Eleven weight trainers from two gyms were interviewed (three females, eight males) about their desires for muscularity and the role it played in their lives. Thematic narrative analysis identified narratives that framed the individuals’ muscular desires, behaviours, and importance. Muscularity formed a versatile resource—identity capital—that was a key part of the individuals’ body projects. These body projects and identity capital facilitated the individuals’ identity performances in a range of contexts (e.g. occupation, gender). Three narratives emerged (individualist, illusionist, and promoter) that highlighted the intertwined tangible (e.g. leanness and strength) and intangible (e.g. control and self-empowerment) attributes associated with muscularity and weight training that facilitated successful identity performances. These narratives achieved goals of self-empowerment (Individualist), self-protection (Illusionist), or self-advertisement (Promoter) which enabled successful identity performances. The current findings advance existing literature by suggesting muscularity is a versatile form of identity capital that can facilitate multiple identities (e.g. occupation, gender) and contexts. The potential benefit to an individuals’ sense of self also highlights the positive effect of muscularity weight training as a tool for self-promotion and personal growth.

Short-Term Weight Training Boosts Muscle Strength And Explosive Power In Secondary School Handball Players

Short-Term Weight Training Boosts Muscle Strength And Explosive Power In Secondary School Handball Players

The Effect of Exercises with Blood Flow Restriction in the Limbs on the Development of Muscle Strength and Hypertrophy: A Pilot Study

Weight training with regulated blood flow in the limbs is characterized by low load intensity ranging from 30-50% of the one repetition maximum. The aim of the study was to assess the effect of weight training with regulated blood flow in the limbs on changes in muscle strength and hypertrophy. The research sample consisted of 5 participants aged 26.40±7.16 years who performed 10-week intervention program. The weekly microcycle consisted of three training sessions, which intensity was regulated by inflatable cuffs placed on proximal parts of upper and lower limbs. Body composition was assessed with InBody 720. Muscle strength of knee and elbow flexors and extensors was assessed with Cybex HUMAC NORM isokinetic dynamometer at four speeds ranging from 60-240°·s-1, supplemented by front squat and bench press with emphasis on speed during the concentric phase of the movement. The results showed an increase in knee flexor muscle strength that was not statistically significant. The present pilot-study points to the need for further verification of methods how to use regulated blood flow in training related to muscle strength and hypertrophy.

Investigation of Bird Sound Transformer Modeling and Recognition

Birds play a pivotal role in ecosystem and biodiversity research, and accurate bird identification contributes to the monitoring of biodiversity, understanding of ecosystem functionality, and development of effective conservation strategies. Current methods for bird sound recognition often involve processing bird songs into various acoustic features or fusion features for identification, which can result in information loss and complicate the recognition process. At the same time, the recognition method based on raw bird audio has not received widespread attention. Therefore, this study proposes a bird sound recognition method that utilizes multiple one-dimensional convolutional neural networks to directly learn feature representations from raw audio data, simplifying the feature extraction process. We also apply positional embedding convolution and multiple Transformer modules to enhance feature processing and improve accuracy. Additionally, we introduce a trainable weight array to control the importance of each Transformer module for better generalization of the model. Experimental results demonstrate our model’s effectiveness, with an accuracy rate of 99.58% for the public dataset Birds_data, as well as 98.77% for the Birdsonund1 dataset, and 99.03% for the UrbanSound8K environment sound dataset.

Increased leg muscle power and arm muscle strength of basketball athletes: through complex training method and circuit body weight training

Increased leg muscle power and arm muscle strength of basketball athletes: through complex training method and circuit body weight training

Physical and Muscular Performance in a Professional Soccer Player with a Posterior Cruciate Ligament Injury Following an Isokinetic Exercise Program: A Case Report.

The comprehensive treatment for an athlete who sustains a complete posterior cruciate ligament (PCL) injury remains unclear. The purpose of this case report is to describe the effects of an isokinetic exercise program on muscle performance and physical function in a professional soccer player with a PCL injury. Case Report. A 23-year-old male professional soccer player injured his right knee (non-dominant) during a soccer match, with magnetic resonance imaging confirming a complete PCL rupture. The athlete completed 23 sessions of isokinetic treatment over nine weeks to improve physical function and muscle performance. The concentric mode was used to evaluate quadriceps and hamstrings performance isokinetically at angular velocities of 60 °/s, 120 °/s, and 300 °/s. The LEFS questionnaire was used to evaluate physical function. The assessment occurred before starting the treatment and at the end of nine weeks. An athlete with similar anthropometric characteristics was invited to participate and serve as a control, in order to better understand the athlete's assessment results. After nine weeks, peak torque normalized to body mass (PT/BM) improved to 4.0 N.m/kg for knee extensors (control: 3.6 Nm/kg) and 2.3 N.m/kg for knee flexors (control: 1.9 Nm/kg) at 60 °/s. This increase in PT was reflected in the hamstrings-to-quadriceps (H:Q) ratio post-treatment (57 %). At the end of treatment, the athlete returned to sports activities with 98.7 % restored physical function as measured by the LEFS (Score: 79 points). The results demonstrated that the isokinetic treatment improved knee functional capacity, with increased PT/BM for knee extensors and flexors and enhanced torque-holding capacity, indicating improved muscle performance. 5.

E-commerce and Mobile Application Development in the Sports Industry

In order to achieve user recommendations that best match their current contextual needs, the author proposes a mobile service QoS (Quality of Service) hybrid recommendation model based on sports user situational awareness. Cluster the users and service items covered by mobile users based on their location contextual information according to the classification principle of autonomous systems, forming a collaborative filtering and recommendation mechanism for mobile user service items; In response to the cold start problem of new users and new projects in traditional QoS recommendation methods, prediction and recommendation of missing QoS attribute preference values are based on User based and Item based CF; In response to the problem of difficult determination of mixed recommendation weights caused by massive data and uneven distribution of service QoS attribute values in mobile network environments, MapReduce based ant colony neural network weight training is used for CF mixed recommendation. Experimental results have shown that the Hadoop sports industry has improved the operational efficiency of algorithms and reduced the time for global QoS preference prediction; And by comparing the operation results of the 10% and 100% sub datasets, it can also be seen that the acceleration ratio of the algorithm will continuously improve with the increase of data volume, thereby improving the operational efficiency of the recommendation algorithm. It has been proven that the MapReduce based ant colony neural network weight training method significantly reduces the global computation time of the algorithm and improves the operational efficiency of the recommendation system.

WEB Application for Control Oxygen Regimes of the Body

Introduction. The muscular fitness of servicemen plays a significant role in the successful performance of military and professional tasks. Currently, 60 days are allotted for the training of a serviceman, so the task of optimizing this training is urgent. Typically, strength endurance can be effectively improved by combining strength, aerobic, and specific weight training. Therefore, the task of objective control of the training process is urgent. A number of sources emphasize the connection between the injuries of military personnel in the conditions of professional activity and aerobic productivity. That is why a model of regulation of the body's oxygen regimes was chosen for the purpose of training control. The need to process large amounts of information justifies the need to develop convenient applications for this. The purpose of the paper is to develop a web application for monitoring the training process of military personnel based on the model of managing the body's oxygen regimes. Methods. Mathematical modeling methods, programming methods. Results. The developed web application for modeling the oxygen regimes of the body allows for objective control of speed and strength training of military personnel. The web application is developed on the OpenXava platform, which provides the user with a more convenient service, is suitable not only for the Windows operating system, but also for Linux, Mac, UNIX, Android and does not require the installation of additional software. Keywords: mathematical model of regulation of oxygen regimes of the body, professional military activity, speed-power training of the military.

Investigation of the Effects of Teeth Clenching Due to Weight Training on Oral Health

Investigation of the Effects of Teeth Clenching Due to Weight Training on Oral Health

Body weight training versus series 7 diabetes dance: their influence on glucose levels in patients with type 2 diabetes mellitus

Managing blood glucose levels is critical for preventing complications associated with type 2 diabetes mellitus (T2DM). Physical activity has been shown to be an effective strategy for glucose control, with various forms of exercise yielding different results. This research aims to explore the effects of body weight training and series 7 diabetes dance on reducing blood glucose levels in patients with T2DM, and to compare the efficacy of these two interventions in achieving glucose control. The type of research was a quasi-experiment with a two groups pre-test post-test design. The series 7 diabetes dance group performed the exercise 4 times a week (duration: 170 minutes 8 seconds/week), while the body weight training group performed exercise 3 times a week (8 movements, number of repetitions close to failure, circuit system, 3 sets per training session). Both groups were doing an exercise program for three months. The research sample was for about 16 patients of type 2 diabetes mellitus (8 people per group, devided randomly), taken by using non probability sampling technique, purposive sampling type (effect size 1.6, significant level (α) 0.05 and Power 0.8). The data analysis used the paired sample t test and the independent t test with a significance level of α = 0.05.The results showed that 1) there is no significant effect of series 7 diabetes dance towards the decreasing the level of blood sugar of the patients with type 2 diabetes mellitus), 2) there is a significant effect of body weight training towards the decreasing level of blood glucose of the patients with type 2 diabetes mellitus, 3) dody weight training is more effective in decreasing the level of blood glucose of patients with type 2 diabetes mellitus compared to series 7 diabetes dance. Future research must be carried out as a true experiment with a larger number of samples and with the HbA1c research instrument.