scholarly journals EFFECT OF METABOLIC ENZYMES ON ACCELERATION ABILITY IN EXERCISE FATIGUE

2021 ◽  
Vol 27 (3) ◽  
pp. 257-261
Author(s):  
Yang Lu ◽  
Xiaoli Wang
Keyword(s):  
Adaptive Filtering ◽  
Metabolic Enzymes ◽  
Metabolic Enzyme ◽  
Treatment Results ◽  
Dynamic Information ◽  
Level Of Evidence ◽  
Filtering Algorithm ◽  
Exercise Fatigue ◽  
The Relationship ◽  
Biological Image

ABSTRACT Introduction Study the relationship between the metabolic enzyme and the biological image, filtered by an adaptive filtering algorithm. Objective The research aims to In this study, human metabolic enzymes were evaluated by electrocardiogram and electromyogram images, and an adaptive filtering algorithm removed the noises in the images. Methods The electrocardiogram and electromyogram images at different periods were obtained, and the calculation method and application scope of the adaptive filtering algorithm were analysed. Results Adaptive filter was designed by the combination of adaptive filtering algorithm and dynamic information. Therefore, the artefact of the image was removed. Conclusions The adaptive filtering algorithm can effectively remove the noise or artefact in electrocardiogram and electromyogram signals. The optimal image information can be obtained. Level of evidence II; Therapeutic studies - investigation of treatment results.

ATHLETE's CARDIOVASCULAR FUNCTION TEST IN DIFFERENT SPORTS

2021 ◽  
Vol 27 (7) ◽  
pp. 670-673
Author(s):  
Guohai Zhou
Keyword(s):  
Exercise Training ◽  
Physical Training ◽  
Cardiovascular Response ◽  
Cardiovascular Function ◽  
Aerobic Exercise Training ◽  
Step Test ◽  
Treatment Results ◽  
Level Of Evidence ◽  
Function Test ◽  
The Relationship

ABSTRACT Introduction: There have been many reports on athletes’ cardiovascular function, but there are very few methods used to evaluate the case. Objective: This article studies the relationship between sports fatigue and the cardiovascular response of athletes so that athletes can exercise and train more scientifically and safely. Methods: The paper selected some national athletes from 2017 to 2020 to carry out the VO2max, step test, YoYo test, 12-minute running, and other tests related to the cardiovascular function. Results: Athletes can promote the improvement of their cardiovascular function when they perform aerobic exercise training. Conclusion: Public physical education and amateur physical training should focus on the development of aerobic endurance. This can improve athletes’ cardiovascular function. Level of evidence II; Therapeutic studies - investigation of treatment results.

scholarly journals IMPROVED BIOLOGICAL IMAGE TRACKING ALGORITHM OF ATHLETE’S CERVICAL SPINE HEALTH

2021 ◽  
Vol 27 (3) ◽  
pp. 274-277
Author(s):  
Chunmin Dai ◽  
Yang Lu
Keyword(s):  
Cervical Spine ◽  
Tracking Algorithm ◽  
Treatment Results ◽  
Level Of Evidence ◽  
Image Tracking ◽  
Detection And Tracking ◽  
Camshift Algorithm ◽  
Center Position ◽  
Feedback Algorithm ◽  
Biological Image

ABSTRACT Introduction This paper research an improved biological image tracking algorithm of athlete’s cervical spine health under color feedback. Objective A new algorithm is proposed to improve the accuracy of detection and tracking. Methods In this study, the first thing is to apply the color feedback algorithm to improve and optimize the Improved Camshift algorithm. The optimized algorithm was used to track the center of the image, and the video was processed frame by frame. The center position of the tracking frame was obtained. Results The average number of head twists per person is 39 times. Among the three groups, children twisted the least, and older adults twisted the most. Conclusion The algorithm proposed in this study has certain effectiveness and superiority and can be well applied to detecting the number of head twists during exercise. Level of evidence II; Therapeutic studies - investigation of treatment results.

scholarly journals Orthorexia nervosa and Instagram: exploring the Russian-speaking conversation around #opтopeкcия

2021 ◽  
Author(s):  
Yana Zemlyanskaya ◽  
Martina Valente ◽  
Elena V. Syurina
Keyword(s):  
Orthorexia Nervosa ◽  
Online Questionnaire ◽  
Level Of Evidence ◽  
Russian Speakers ◽  
Global North ◽  
Harmful Content ◽  
English Speaking ◽  
Comparative Content ◽  
The Relationship ◽  
Informative Text

AbstractThis mixed-methods study explored the conversation around orthorexia nervosa (ON) on Instagram from a Russian-speaking perspective. Two quantitative data sources were implemented; a comparative content analysis of posts tagged with #opтopeкcия (n = 234) and #orthorexia (n = 243), and an online questionnaire completed by Russian-speakers (n = 96) sharing ON-related content on Instagram. Additionally, five questionnaire participants were interviewed, four of which identified with having (had) ON. Russian-speakers who share ON-related content on Instagram are primarily female, around their late-twenties, and prefer Instagram over other platforms. They describe people with ON as obsessed with correct eating, rather than healthy or clean eating. Instagram appears to have a dual effect; it has the potential to both trigger the onset of ON and encourage recovery. Positive content encourages a healthy relationship with food, promotes intuitive eating, and spread recovery advice. Harmful content, in turn, emphasizes specific diet and beauty ideals. Russian-speaking users mainly post pictures of food, followed by largely informative text that explains what ON is, and what recovery may look like. Their reasons for posting ON-related content are to share personal experiences, support others in recovery, and raise awareness about ON. Two main target audiences were people unaware of ON and people seeking recovery support. The relationship between ON and social media is not strictly limited to the global north. Thus, it may be valuable to further investigate non-English-speaking populations currently underrepresented in ON research.Level of evidence: Level V, descriptive study.

scholarly journals Factors Influencing Creatine Kinase Response in Youth National Team Soccer Players

2021 ◽  
pp. 194173812199938
Author(s):  
Gabor Schuth ◽  
Gyorgy Szigeti ◽  
Gergely Dobreff ◽  
Peter Revisnyei ◽  
Alija Pasic ◽  
...  
Keyword(s):  
Creatine Kinase ◽  
Prediction Models ◽  
Soccer Players ◽  
Linear Regression Models ◽  
Level Of Evidence ◽  
Internal Load ◽  
Youth Soccer ◽  
National Team ◽  
Weekly Training ◽  
The Relationship

Background: Previous studies have examined the relationship between external training load and creatine kinase (CK) response after soccer matches in adults. This study aimed to build training- and match-specific CK prediction models for elite youth national team soccer players. Hypothesis: Training and match load will have different effects on the CK response of elite youth soccer players, and there will be position-specific differences in the most influential external and internal load parameters on the CK response. Study Design: Prospective cohort study. Level of Evidence: Level 4. Methods: Forty-one U16-U17 youth national team soccer players were measured over an 18-month period. Training and match load were monitored with global positioning system devices. Individual CK values were measured from whole blood every morning in training camps. The dataset consisted of 1563 data points. Clustered prediction models were used to examine the relationship between external/internal load and consecutive CK changes. Clusters were built based on the playing position and activity type. The performance of the linear regression models was described by the R2 and the root-mean-square error (RMSE, U/L for CK values). Results: The prediction models fitted similarly during games and training sessions ( R2 = 0.38-0.88 vs 0.6-0.77), but there were large differences based on playing positions. In contrast, the accuracy of the models was better during training sessions (RMSE = 81-135 vs 79-209 U/L). Position-specific differences were also found in the external and internal load parameters, which best explained the CK changes. Conclusion: The relationship between external/internal load parameters and CK changes are position specific and might depend on the type of session (training or match). Morning CK values also contributed to the next day’s CK values. Clinical Relevance: The relationship between position-specific external/internal load and CK changes can be used to individualize postmatch recovery strategies and weekly training periodization with a view to optimize match performance.

scholarly journals Unscented Particle Filter Algorithm Based on Divide-and-Conquer Sampling for Target Tracking

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2236
Author(s):  
Sichun Du ◽  
Qing Deng
Keyword(s):  
Particle Filter ◽  
State Space ◽  
Adaptive Filtering ◽  
Divide And Conquer ◽  
Particle Swarm Algorithm ◽  
Tracking Accuracy ◽  
Filtering Algorithm ◽  
Maneuvering Target ◽  
Unscented Particle Filter ◽  
Particle Filter Algorithm

Unscented particle filter (UPF) struggles to completely cover the target state space when handling the maneuvering target tracing problem, and the tracking performance can be affected by the low sample diversity and algorithm redundancy. In order to solve this problem, the method of divide-and-conquer sampling is applied to the UPF tracking algorithm. By decomposing the state space, the descending dimension processing of the target maneuver is realized. When dealing with the maneuvering target, particles are sampled separately in each subspace, which directly prevents particles from degeneracy. Experiments and a comparative analysis were carried out to comprehensively analyze the performance of the divide-and-conquer sampling unscented particle filter (DCS-UPF). The simulation result demonstrates that the proposed algorithm can improve the diversity of particles and obtain higher tracking accuracy in less time than the particle swarm algorithm and intelligent adaptive filtering algorithm. This algorithm can be used in complex maneuvering conditions.

scholarly journals The relationship between physical fitness attributes and sports injury in female, team ball sport players: a systematic review

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Jessica B. Farley ◽  
Lily M. Barrett ◽  
Justin W. L. Keogh ◽  
Carl T. Woods ◽  
Nikki Milne
Keyword(s):  
Systematic Review ◽  
Body Composition ◽  
Physical Fitness ◽  
Sports Injury ◽  
Quality Data ◽  
Body Region ◽  
Ankle Sprains ◽  
Level Of Evidence ◽  
Data Synthesis ◽  
The Relationship

Abstract Background Understanding the relationships between physical fitness characteristics and sports injury may assist with the development of injury minimisation programs. The purpose of this systematic review was to investigate the association between physical fitness attributes and sports injury in female, team ball sport players. Methods Four scientific databases (MEDLINE, EMBASE, SPORTDiscus, Scopus) and reference lists of relevant research were searched for eligible studies up to September 2, 2019. Full-text articles examining the relationship between physical fitness and sports injury in female, team ball sport players were included. A modified Downs and Black checklist was used to assess methodological quality. Data synthesis determined summary conclusions based on the number of significant relationships divided by the total relationships investigated and reported as a percentage. Level of certainty was identified for summary conclusions based on level of evidence. Sub-analyses regarding competition level, age, and single injury types were also conducted. Results A total of 44 studies were included. Data synthesis revealed no associations (low to moderate certainty) between body composition (1/9; 11%), flexibility (18–20%), and balance (2/8; 25%) and ‘any injury’ classification. No associations (mostly of moderate certainty) were found between flexibility (0–27%), muscular strength (0–27%), and body composition (14–33%) and various body region injury classifications, whereas mixed summary conclusions were shown for balance (0-48%). Many associations between physical fitness and sports injury were deemed ‘unknown’ or with an insufficient level of certainty. Sub-analyses revealed no association between strength and noncontact ACL injuries (0/5; 0%) or ankle sprains (0/12; 0%), and between flexibility and ankle sprains (1/5; 20%); however, insufficient certainty of these results exists. Clear associations were concluded between balance and lower body injuries in female, non-elite (10/16; 63%) and junior (9/12; 75%) team ball sport players, with moderate and insufficient certainty of these results, respectively. Conclusion Limited evidence is available to demonstrate relationships between physical fitness and sports injury in female, team ball sport players. High-quality evidence investigating the multifactorial nature of sports injury, including the interactions physical fitness qualities have with other injury determinants, is needed to better understand the role of physical fitness in minimising sports injuries in female, team ball sport players. Trial Registration CRD42017077374 (PROSPERO on September 14, 2017).

scholarly journals The #orthorexia community on Instagram

2021 ◽  
Author(s):  
Martina Valente ◽  
Sophie Renckens ◽  
Joske Bunders-Aelen ◽  
Elena V. Syurina
Keyword(s):  
Content Analysis ◽  
Sense Of Belonging ◽  
Mixed Methods Study ◽  
Therapeutic Interventions ◽  
Negative Consequences ◽  
Online Questionnaire ◽  
Level Of Evidence ◽  
Helping Others ◽  
The Relationship ◽  
Share Information

Abstract Purpose This mixed-methods study delved into the relationship between orthorexia nervosa (ON) and Instagram. Methods Two quantitative data sources were used: content analysis of pictures using #orthorexia (n = 3027), and an online questionnaire investigating the experience of ON and the use of Instagram of people sharing ON-related content on Instagram (n = 185). Following, interviews (n = 9) were conducted with people posting ON-related content on Instagram and self-identifying as having (had) ON. Results People who share ON-related content on Instagram were found to be primarily young women (questionnaire = 95.2% females, mean age 26.2 years; interviews = 100% females, mean age 28.4 years), who were found to be heavy social media users and favor Instagram over other platforms. Questionnaire respondents agreed in defining ON as an obsession with a diet considered healthy, with bio-psycho-social negative consequences, though those who self-identified as having (had) ON were more likely to point out the negative impairments of ON. Interviewees deemed Instagram partially responsible for the development of ON. Instead, they agreed that Instagram encourages problem realization. Content analysis showed that ON is encoded in pictures of ‘food’, ‘people’, ‘text’ and ‘other.’ Interviewees revealed that they started posting to recover, share information, help others, and they felt inspired to post by other accounts. A sense of belonging to the #orthorexia community emerged, where people share values and ideals, and seek validation from others. Conclusion Conversations around #orthorexia on Instagram generate supportive communities aiding recovery. Individuals use Instagram for helping others and themselves recovering from ON. Understanding how people help each other, manage their health, cope with symptoms, and undertake recovery can inform the implementation of therapeutic interventions for ON. Level of evidence Level III, evidence obtained from well-designed cohort or case–control analytic studies.

The association between surgery for carpal and cubital tunnel syndrome: analysis of incidence and risk factors within a geographical area

2021 ◽  
Vol 46 (3) ◽  
pp. 260-264
Author(s):  
Nick A. Johnson ◽  
Oliver Darwin ◽  
Dimitrious Chasiouras ◽  
Anna Selby ◽  
Chris Bainbridge
Keyword(s):  
Relative Risk ◽  
Carpal Tunnel ◽  
Carpal Tunnel Release ◽  
Geographical Area ◽  
Cubital Tunnel Syndrome ◽  
Cubital Tunnel ◽  
Level Of Evidence ◽  
Tunnel Syndrome ◽  
The Relationship ◽  
Syndrome Analysis

The relationship between surgery for cubital tunnel and carpal tunnel syndrome was examined in this retrospective study. Between 1997 and 2018, data from consecutive patients who underwent carpal tunnel release (8352 patients), cubital tunnel release (1681 patients) or both procedures (692 patients) were analysed. The relative risk of undergoing cubital tunnel release in the population who had carpal tunnel release compared with those with no carpal tunnel release was 15.3 (male 20.3; female 12.5). The relative risk of undergoing carpal tunnel release in the population who had cubital tunnel release compared with those who did not undergo carpal tunnel release was 11.5 (male 16.5; female 9.1). Our study showed that men and women who undergo carpal tunnel release are over 20 times and 10 times more likely to have cubital tunnel release than those who did not undergo carpal tunnel release, respectively. These findings suggest that the two conditions may share a similar aetiology. Level of evidence: IV

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