Open Sports Sciences Journal最新文献

{"title":"Different Smoothing Window Lengths can Estimate the Neuromuscular Fatigue Threshold at The same Intensity of the Lactate Threshold During the Leg Press Exercise","authors":"Runer Augusto Marson, Nuno Manuel Frade de Sousa, Robson Dias Scoz, Jose Joao Baltazar Mendes, Luciano Maia Alves Ferreira, Marco Aurélio Anunciação de Melo, Vilmar Baldissera, Lucas Filgueiras Freitas, César Ferreira Amorim","doi":"10.2174/1875399x-v16-e2304040-2022-25","DOIUrl":"https://doi.org/10.2174/1875399x-v16-e2304040-2022-25","url":null,"abstract":"Background: This study aimed to compare different smoothing window lengths used to compute the RMS and their impact on RMS slope during leg press exercise and to compare the RMS slope behavior with lactate threshold. Methods: Twelve subjects performed an incremental test on a leg press machine where blood lactate concentration was measured at each stage. The RMS of vastus medialis (VM), vastus lateralis (VL) and rectus femuralis (RF) were computed for 200, 1500 and 3000ms windows length periods, and the RMS linear slope was used to interpret the results in the amplitude domain. The EMG fatigue threshold (EMGth) was determined for the quadriceps muscle during the three smoothing window lengths. Results: There was no significant difference ( p > 0.05) in RMS slope between the three different RMS window length analyses for VM and VL muscles. The RMS slope was significantly higher ( p ≤ 0.05) for the window length period of 1500 and 3000ms compared to 200ms in some intensities of exercise. The ICCs between the RMS slopes were 0.94 for RF and 0.95 for VL and VM. There was no significant difference ( p > 0.05) between the EMGth at different window length periods and the lactate threshold (28.0 ± 3.7% of 1RM). Conclusion: Different smoothing window lengths to computed RMS could be used during resistance exercise without differences in RMS slope. The smoothing window lengths don´t influence EMGth intensity and are related to the lactate threshold.","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135905819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Different Smoothing Window Lengths can Estimate the Neuromuscular Fatigue Threshold at The same Intensity of the Lactate Threshold During the Leg Press Exercise","authors":"R. Marson, N. F. D. de Sousa, R. D. Scoz, José João Baltazar Mendes, Luciano Maia Alves Ferreira, M. A. A. de Melo, V. Baldissera, Lucas Filgueiras Freitas, C. Amorim","doi":"10.2174/1875399x-v16-e230403-2022-25","DOIUrl":"https://doi.org/10.2174/1875399x-v16-e230403-2022-25","url":null,"abstract":"\u0000 \u0000 This study aimed to compare different smoothing window lengths used to compute the RMS and their impact on RMS slope during leg press exercise and to compare the RMS slope behavior with lactate threshold.\u0000 \u0000 \u0000 \u0000 \u0000 Twelve subjects performed an incremental test on a leg press machine where blood lactate concentration was measured at each stage. The RMS of vastus medialis (VM), vastus lateralis (VL) and rectus femuralis (RF) were computed for 200, 1500 and 3000ms windows length periods, and the RMS linear slope was used to interpret the results in the amplitude domain. The EMG fatigue threshold (EMGth) was determined for the quadriceps muscle during the three smoothing window lengths.\u0000 \u0000 \u0000 \u0000 There was no significant difference (p> 0.05) in RMS slope between the three different RMS window length analyses for VM and VL muscles. The RMS slope was significantly higher (p ≤ 0.05) for the window length period of 1500 and 3000ms compared to 200ms in some intensities of exercise. The ICCs between the RMS slopes were 0.94 for RF and 0.95 for VL and VM. There was no significant difference (p> 0.05) between the EMGth at different window length periods and the lactate threshold (28.0 ± 3.7% of 1RM).\u0000 \u0000 \u0000 \u0000 Different smoothing window lengths to computed RMS could be used during resistance exercise without differences in RMS slope. The smoothing window lengths don´t influence EMGth intensity and are related to the lactate threshold.\u0000","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45553224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Attitudes towards LGBTQ+ Inclusion in Canadian Figure Skating","authors":"A. Schnell, J. Godley, W. Bridel","doi":"10.2174/1875399x-v16-e230308-2022-35","DOIUrl":"https://doi.org/10.2174/1875399x-v16-e230308-2022-35","url":null,"abstract":"\u0000 \u0000 As part of an examination of the current climate regarding gender and sexual diversity in figure skating, this paper reports on a 2019 pilot study examining the attitudes of athletes, coaches, officials, and administrators at Skate Canada (the national figure skating organization).\u0000 \u0000 \u0000 \u0000 To describe attitudes towards LGBTQ+ inclusion in figure skating; to assess whether attitudes vary by gender, sexual identity, or level of participation in skating; and to examine the impact of contact with LGBTQ+ people on attitudes towards inclusion.\u0000 \u0000 \u0000 \u0000 We conducted an online survey of 106 Skate Canada members in 2019, including attitudinal, demographic, and inter-group contact questions. We employed factor analysis to summarize the attitudinal questions, and multiple regression analyses to examine the effects of demographic and contact variables on attitudes.\u0000 \u0000 \u0000 \u0000 Four main factors emerged, reflecting a continuum of passive to active support for diversity and inclusion in skating. Although all respondents’ attitudes toward LGBTQ+ inclusion in figure skating were mostly positive, athletes and coaches were significantly less likely to believe that skating is an inclusive environment than volunteers and officials. Additionally, those who identified as gender and/or sexually diverse scored significantly higher on the personal advocacy factor. In the multiple regression analyses, more frequent contact with LGBTQ+ individuals was associated with significant increases in both passive and active support for inclusion.\u0000 \u0000 \u0000 \u0000 Gender and sexually diverse respondents, and those with more frequent contact with LGBTQ+ individuals, demonstrated higher levels of both active and passive support for inclusion in Canadian figure skating. We recommend that sports organizations should conduct ongoing attitudinal surveys of their membership to monitor progress towards LGBTQ+ inclusion, and should remain attuned to the unique experiences of LGBTQ+ athletes and coaches.\u0000","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44649541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Post-Exercise Lower Limbs Recovery Process: A Questionnaire Applied To Physiotherapists","authors":"J. Duarte, Gonçalo Silva, F. Sousa, L. Machado, R. Fernandes, J. P. Vilas-Boas","doi":"10.2174/1875399x-v17-e230217-2022-33","DOIUrl":"https://doi.org/10.2174/1875399x-v17-e230217-2022-33","url":null,"abstract":"\u0000 \u0000 Physical exercise is essential to improve quality of life, with muscle recovery after exercise being crucial since it reduces the delayed sensation of muscle discomfort and fatigue. The present study aims to identify the methods used by physiotherapists to recover sports practitioners after physical exercise and presents a non-experimental, quantitative and descriptive nature.\u0000 \u0000 \u0000 \u0000 Fifty-two physiotherapists (52% women), with 9.8 ± 7.3 years of experience and different sports backgrounds, were asked to complete an anonymous questionnaire that consisted of (1) participant demographics, (2) recovery wearable sports garment, and (3) development of a new product for muscle recovery.\u0000 \u0000 \u0000 \u0000 Physiotherapists reported that sports practitioners use legging-like garments during training (n=22), after training (n=19), while some physiotherapists were not aware if their athletes use any legging-like garment (n=17). The common characteristics of the garments are the compression (56%), heating (34%) and, in some cases, massage (6%) and printed electronic devices (4%). Physiotherapists mention that sports practitioners usually report lower limbs localized muscle fatigue after training or competition (90%), and the most affected areas are the entire lower limb (n=12), quadriceps (n=9) and hamstring and glutes (n=7 each). The most common therapy used is massage (n=12), followed by electrostimulation (n=8) and compression (n=5).\u0000 \u0000 \u0000 \u0000 Physiotherapists believe that electrostimulation should be used to recover quadriceps, hamstrings and the whole lower limb, and localized heating should be centered in the entire lower limb, hamstrings and quadriceps (in number of answers). Alternatively, massage is better to recover the whole lower limb, gastrocnemius, and hamstrings. When asked what characteristics the garment should have, physiotherapists reported that comfort (n=44), breathability (n=37) and ease of care and cleaning are vital.\u0000","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43806561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inflammatory Indices During and After a Randomized Controlled Trial on Exercise in Old Adults: Could Moderate-Intensity Exercise Be Safe Enough? (Active Elderly and Health – Clinicaltrials.Gov, Nct03858114)","authors":"A. Scano, Giulia Cossu, G. Kalcev, E. Pintus, M. Pau, M. P. Penna, L. Atzori, G. Orrù, F. Romano, Cesar Ivan Aviles Gonzalez, M. Carta","doi":"10.2174/1875399x-v16-e230111-2022-19","DOIUrl":"https://doi.org/10.2174/1875399x-v16-e230111-2022-19","url":null,"abstract":"\u0000 \u0000 Aging is characterized by a progressive increase in chronic diseases. According to WHO guidance, there is a need to develop strategies to monitor, maintain and rehabilitate the health of older people. The present research aims to elucidate whether or not a moderate physical activity intervention in older adults can cause an increase in inflammatory biomarker indices such as C-reactive Protein (CRP) and erythrocyte sedimentation rate (ESR). It is a valuable tool for promoting health that can be considered tolerable in the over-65 population.\u0000 \u0000 \u0000 120 males and females over 65 years of age participated in a randomized controlled trial (RCT NCT03858114) in two groups of 60 individuals of similar size and underwent moderate physical activity or cultural and recreational activities. The exclusion criteria were being younger than 65 years old, being unable to participate in physical activity for medical reasons and a Body Mass Index of greater than 35. Blood samples from participants were collected for the pre-treatment period (t0), at the end of the study of 12 weeks (t1), and 20 weeks after the end of the study (t2) for measurement of inflammatory indices CRP and ESR. \u0000 \u0000 \u0000 \u0000 The commonly routine tests for inflammatory reactions (ERS and CPR) showed no change at the end of an RCT on mild-to-moderate exercise. \u0000 \u0000 The results on inflammatory indices confirm the safety of this type of intervention and encourage its long-term use and testing.","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44958050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence and Profile of Musculoskeletal Injuries in High-Performance Professional Brazilian Jiu-Jitsu Athletes","authors":"L. Nery, Claudinei Chamorro Pelegrina Junior, B. Saragiotto, R. D. Scoz, R. Marson, José João Baltazar Mendes, Luciano Maia Alves Ferreira, C. Amorim","doi":"10.2174/1875399x-v15-e221226-2022-23","DOIUrl":"https://doi.org/10.2174/1875399x-v15-e221226-2022-23","url":null,"abstract":"\u0000 \u0000 Brazilian Jiu-jitsu (BJJ) has become popular over the past years; however, few studies investigated the prevalence of injuries in this martial art modality.\u0000 \u0000 \u0000 \u0000 The aim of this study was to determine the prevalence of musculoskeletal injuries in BJJ competitors along with their profile and characteristics.\u0000 \u0000 \u0000 \u0000 One-hundred fifteen athletes were included in this cross-sectional study. A hundred fifteen professional high-performance athletes were selected from twenty-five BJJ gyms in the State of São Paulo, Brazil. Descriptive analyses were used to demonstrate the athlete’s individual characteristics, and the Kruskal-Wallis non-parametric test was used to assess the significant differences between the number of injuries categorized by athlete’s belt or performance level category. Additionally, the Fisher’s exact test was used to assess possible differences between frequency of total injuries and injuries per affected site among the belts.\u0000 \u0000 \u0000 \u0000 We observed an injury prevalence of 85.2%, in which knee (32.6%), shoulder (11.2%) and elbow (8.4%) were the most affected regions. We did not find any significant differences between the number of injuries and belt classification (p=0.093) or for the frequency of total injuries per anatomical region among belt classification (p=0.121). Most injuries occurred during training (74%), and the main reason for time loss from training activities was due to trauma (70%).\u0000 \u0000 \u0000 \u0000 There is a high prevalence of injuries among BJJ competitors, and the most affected site was the knee.\u0000","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45776842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Narrative Review: Exercise Induces Adipose Browning by Altering the Gut Microbiome Profile","authors":"Dini Suryani, V. Tarawan, I. Megantara, R. Lesmana, N. Sylviana, H. Goenawan","doi":"10.2174/1875399x-v15-e221125-2022-28","DOIUrl":"https://doi.org/10.2174/1875399x-v15-e221125-2022-28","url":null,"abstract":"Obesity is a condition that is highly associated with chronic disease. The number of obese individuals is increasing on a global scale every year. Energy intake that is imbalanced with energy expenditure causes the accumulation of excess fat. Regular exercise is part of a lifestyle that can reduce the risk of obesity by inducing adipose browning. One of the mechanisms of exercise in inducing browning is by modifying the gut microbiome profile. This profile may promote adipose browning by maintaining the integrity of the intestinal barrier, glucose homeostasis, regulating energy absorption, and appetite-regulating hormones.","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46963060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identity and Sports Marketing in Africa: A General Review","authors":"Chijindu Okpalaoka, Keziah Olaniyi","doi":"10.2174/1875399x-v15-2209290","DOIUrl":"https://doi.org/10.2174/1875399x-v15-2209290","url":null,"abstract":"\u0000 \u0000 Sports marketing is distinct from other consumer products, and that producers of sport experience cannot foresee the outcome, certain events are unpredictable, and results are unknown.\u0000 \u0000 \u0000 \u0000 The study purpose was to examine and review identity and sports marketing in Africa.\u0000 \u0000 \u0000 \u0000 The study used qualitative data and relevant literature reviews, using past literally works and secondary data.\u0000 \u0000 \u0000 \u0000 The study showed that the distinction between personal and social identity is frequently misleading, hiding both the parallels and linkages between two ostensibly different levels of identity. Moreover, the sports sector has the potential to contribute to Africa's industrial prosperity significantly. Findings of these results related to personal (self) and social identity and other practical implications are discussed.\u0000 \u0000 \u0000 \u0000 The study concluded that positive self-identity helps African athletes to have a positive image about themselves which enhances their sporting performance, thereby leading to sporting progress in Africa.\u0000","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49370077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Association between External Training Load, Perceived Exertion and Total Quality Recovery in Sub-Elite Youth Football","authors":"J. Teixeira, Pedro Forte, Ricardo Ferraz, Miguel Leal, Joana Ribeiro, António J Silva, T. Barbosa, A. M. Monteiro","doi":"10.2174/1875399x-v15-e2207220","DOIUrl":"https://doi.org/10.2174/1875399x-v15-e2207220","url":null,"abstract":"\u0000 \u0000 Moderate to very large correlation between internal training load, external training load, and recovery status have been reported in elite youth football. However, little is known about subelite youth football training environments.\u0000 \u0000 \u0000 \u0000 The purpose of this study was to assess the association between training load and recovery status in young subelite football players.\u0000 \u0000 \u0000 \u0000 Twenty under-15, twenty under-17, and twenty under-19 players were monitored over a 6-week period during the first month of the 2019-2020 competitive season. The global positioning system technology (GPS) was used to collect external training load variables. The internal training load variables were monitored using the rating of perceived exertion (RPE) scale and session RPE (sRPE). The recovery status was assessed by the total quality recovery (TQR). A total of 18 training sessions and 324 observation cases were collected.\u0000 \u0000 \u0000 \u0000 Small to moderate correlation between internal and external load was observed (r = -0.316 to 0.136, p < 0.05). Correlations between recovery status and external load were moderate for U15 (r = -0.326 to -0.240, p < 0.05), U17 (r = -0.316 to 0.136, p < 0.05) and U19 (r = -0.301 to 0.282, p < 0.05). The association between perceived exertion and external training load is only significant for U19 subelite football players.\u0000 \u0000 \u0000 \u0000 Current research suggested that subelite youth football players were more likely to have lower capacity to judge training exertion. Additionally, recovery status was positively correlated with acceleration and deceleration movements. This study provides a new overview about training load and recovery in subelite youth training environment. Future researche should examine the between- and within-individual nonlinearity across training load and recovery variations.\u0000","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42015632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chronic Non-communicable Diseases, Pain, and Coping Strategies: An Overview","authors":"Amani Mechraoui, Eya Bouzouraa, N. Hammami","doi":"10.2174/1875399x-v15-e2209260","DOIUrl":"https://doi.org/10.2174/1875399x-v15-e2209260","url":null,"abstract":"Around the world, chronic diseases have impacted the health and quality of life of many individuals. These chronic non-communicable diseases (NCDs), such as cancer, diabetes, cardiovascular disorders, and lung disease, are expensive to treat, frequently require lifelong care, and worsen drastically if treatment is postponed or of poor quality. This phenomenon will place pressure on healthcare systems to adjust to meet these evolving demands by creating efficient preventive strategies. One of the key epidemiological trends of the current times is the rise of chronic and degenerative diseases. This study will provide an overview of chronic diseases and helps to provide a more detailed image of pain and coping strategies. This requires adapting health systems and health policies and a shift from disease-centered to people-centered approaches and population health measures.","PeriodicalId":38865,"journal":{"name":"Open Sports Sciences Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44433958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}