Pub Date : 2018-01-08DOI: 10.1590/S1980-6574201700SI0098
M. S. Moraes, Tiago Rodrigues de Lima, D. Silva
Aim: To compare performance in the lumbar force test in pubertal and post-pubertal adolescents by controlling the interference of physical growth, body fat, screen time and physical activity. Methods: A cross-sectional study with 933 adolescents (492 girls) aged 14-19 from the city of São José, Brazil. Lumbar strength was assessed using the isometric lumbar extension test proposed by the Canadian Society of Exercise Physiology. Sexual maturation was classified according to Tanner’s criteria. Physical growth variables (age, body weight, stature, BMI), body fat (triceps and subscapular skinfolds), sedentary behavior based on screen time and overall physical activity were controlled in the Analysis of Covariance (ANCOVA), with a significance level of 5%. Results: Post-pubertal boys presented higher lumbar force compared to pubertal ones only when interference of BMI, body fat, screen time and physical activity was controlled. Pubertal girls presented higher lumbar force compared to post-pubertal ones, both when controlling the analysis for the studied variables and when not controlled by them. Conclusion: BMI, body fat, screen time and physical activity interfere in the difference in lumbar strength of boys, in which post-pubertal boys presented better performance in lumbar force compared to pubertal ones. Regardless of interference or not of these variables, pubertal girls presented better performance in lumbar force when compared to post-pubertal ones.
目的:通过控制身体发育、体脂、屏幕时间和体力活动的干扰，比较青春期和青春期后青少年腰力测试的表现。方法:对巴西s o jossore市933名14-19岁青少年(492名女孩)进行横断面研究。腰椎力量评估采用等长腰椎伸展试验由加拿大运动生理学学会提出。性成熟是根据坦纳的标准分类的。身体生长变量(年龄、体重、身高、BMI)、体脂(肱三头肌和肩胛下皮褶)、基于屏幕时间的久坐行为和整体身体活动在协方差分析(ANCOVA)中得到控制，显著性水平为5%。结果:仅在控制BMI、体脂、屏幕时间和体力活动干扰的情况下，青春期后男孩腰力高于青春期前男孩。在控制变量分析和不控制变量分析时，青春期女孩的腰椎力均高于青春期后的女孩。结论:BMI、体脂、屏幕时间和体力活动对男生腰力量的差异有干扰作用，青春期后男生腰力量表现优于青春期男生。无论这些变量是否干扰，青春期女孩腰部力量的表现优于青春期后的女孩。
{"title":"Comparison of lumbar force between pubertal and post-pubertal adolescents: interference of physical growth, body fat and lifestyle.","authors":"M. S. Moraes, Tiago Rodrigues de Lima, D. Silva","doi":"10.1590/S1980-6574201700SI0098","DOIUrl":"https://doi.org/10.1590/S1980-6574201700SI0098","url":null,"abstract":"Aim: To compare performance in the lumbar force test in pubertal and post-pubertal adolescents by controlling the interference of physical growth, body fat, screen time and physical activity. Methods: A cross-sectional study with 933 adolescents (492 girls) aged 14-19 from the city of São José, Brazil. Lumbar strength was assessed using the isometric lumbar extension test proposed by the Canadian Society of Exercise Physiology. Sexual maturation was classified according to Tanner’s criteria. Physical growth variables (age, body weight, stature, BMI), body fat (triceps and subscapular skinfolds), sedentary behavior based on screen time and overall physical activity were controlled in the Analysis of Covariance (ANCOVA), with a significance level of 5%. Results: Post-pubertal boys presented higher lumbar force compared to pubertal ones only when interference of BMI, body fat, screen time and physical activity was controlled. Pubertal girls presented higher lumbar force compared to post-pubertal ones, both when controlling the analysis for the studied variables and when not controlled by them. Conclusion: BMI, body fat, screen time and physical activity interfere in the difference in lumbar strength of boys, in which post-pubertal boys presented better performance in lumbar force compared to pubertal ones. Regardless of interference or not of these variables, pubertal girls presented better performance in lumbar force when compared to post-pubertal ones.","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127838383","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}
Pub Date : 2018-01-08DOI: 10.1590/S1980-6574201700SI0088
M. J. Lyra, A. H. Germano-Soares, Ladyodeyse da Cunha Silva Santiago, D. R. Queiroz, R. Tassitano, A. P. S. T. Falcão, R. Pedrosa, M. Heimer, M. A. Santos
Aims: To analyze the average and individual responses of sleep quality and daytime sleepiness in adolescents after four weeks of strength training. Methods: 19 adolescents with sleep problems recruited in the Federal Institute of Pernambuco, were subject to anthropometric evaluations as well as those for body composition assessment, a 1 repetition maximum test, the sleep parameters (Pittsburgh Sleep Quality Index—PSQI and Epworth Sleepiness Scale—ESS) and were submitted to four weeks of strength-training, performed alternately by segment, two sessions per week, according to recommendations for this population. Results: A decrease in the average PSQI score was observed (10.3±3.3 vs 8.8±4.0; p=0.006), but not in ESS (p>0.05), after intervention. The individual analyses demonstrated that ~63% of adolescents experienced reductions ≥ 3 points in the PSQI and ~58% of them experienced reductions ≥ 3 points in the measure of daytime sleepiness. The prevalence of poor sleep quality and daytime sleepiness reduced from 84.2% to 68.4% and from 52.6% to 31.6%, respectively. The comparisons of high and low responders to exercise training show that adolescents who reduced ≥3 points in the score of a least one sleep parameter presented lower weight, fat mass, and fat percentage (p<0.05). Conclusion: A short-term strength-training program is able to improve global sleep quality, but not daytime sleepiness in adolescents. Furthermore, the changes after training are highly heterogeneous. Further studies are required to better understand the effects of strength training on sleep parameters of adolescents.
目的:分析4周力量训练后青少年睡眠质量和日间嗜睡的平均和个体反应。方法:从伯南布哥联邦研究所招募了19名有睡眠问题的青少年，对他们进行了人体测量学评估、身体成分评估、1次重复最大测试、睡眠参数(匹兹堡睡眠质量指数- psqi和爱普沃斯嗜睡量表- ess)，并根据对这些人群的建议，进行了为期四周的力量训练，按分段交替进行，每周两次。结果:PSQI平均评分下降(10.3±3.3 vs 8.8±4.0;p=0.006)，干预后ESS无明显差异(p>0.05)。个体分析表明，约63%的青少年PSQI下降≥3分，约58%的青少年白天嗜睡程度下降≥3分。睡眠质量差和白天嗜睡的患病率分别从84.2%降至68.4%和52.6%降至31.6%。运动训练高应答者和低应答者的比较显示，至少一项睡眠参数得分降低≥3分的青少年体重、脂肪量和脂肪百分比较低(p<0.05)。结论:短期力量训练计划能够改善整体睡眠质量，但不能改善青少年白天的嗜睡。此外，训练后的变化是高度异质性的。为了更好地了解力量训练对青少年睡眠参数的影响，需要进一步研究。
{"title":"Individual and average responses of sleep quality and daytime sleepiness after four weeks of strength training in adolescents","authors":"M. J. Lyra, A. H. Germano-Soares, Ladyodeyse da Cunha Silva Santiago, D. R. Queiroz, R. Tassitano, A. P. S. T. Falcão, R. Pedrosa, M. Heimer, M. A. Santos","doi":"10.1590/S1980-6574201700SI0088","DOIUrl":"https://doi.org/10.1590/S1980-6574201700SI0088","url":null,"abstract":"Aims: To analyze the average and individual responses of sleep quality and daytime sleepiness in adolescents after four weeks of strength training. Methods: 19 adolescents with sleep problems recruited in the Federal Institute of Pernambuco, were subject to anthropometric evaluations as well as those for body composition assessment, a 1 repetition maximum test, the sleep parameters (Pittsburgh Sleep Quality Index—PSQI and Epworth Sleepiness Scale—ESS) and were submitted to four weeks of strength-training, performed alternately by segment, two sessions per week, according to recommendations for this population. Results: A decrease in the average PSQI score was observed (10.3±3.3 vs 8.8±4.0; p=0.006), but not in ESS (p>0.05), after intervention. The individual analyses demonstrated that ~63% of adolescents experienced reductions ≥ 3 points in the PSQI and ~58% of them experienced reductions ≥ 3 points in the measure of daytime sleepiness. The prevalence of poor sleep quality and daytime sleepiness reduced from 84.2% to 68.4% and from 52.6% to 31.6%, respectively. The comparisons of high and low responders to exercise training show that adolescents who reduced ≥3 points in the score of a least one sleep parameter presented lower weight, fat mass, and fat percentage (p<0.05). Conclusion: A short-term strength-training program is able to improve global sleep quality, but not daytime sleepiness in adolescents. Furthermore, the changes after training are highly heterogeneous. Further studies are required to better understand the effects of strength training on sleep parameters of adolescents.","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130455942","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}
Pub Date : 2018-01-08DOI: 10.1590/S1980-6574201700040007
D. Silva, P. C. Martins, E. C. A. Gonçalves
{"title":"Comparison of three criteria for overweight and obesity classification among adolescents from southern Brazil","authors":"D. Silva, P. C. Martins, E. C. A. Gonçalves","doi":"10.1590/S1980-6574201700040007","DOIUrl":"https://doi.org/10.1590/S1980-6574201700040007","url":null,"abstract":"","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121603186","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}
Pub Date : 2018-01-08DOI: 10.1590/S1980-6574201700040006
R. Menezes, R. Marques, M. Nunomura
Aims: To reveal the pedagogical principles adopted by Brazilian coaches in teaching handball to the under-12 teams (U-12). Methods: The sample included six coaches with extensive coaching experience, whose reports were collected through semi-structured interviews. The data were treated and analyzed according to the Collective Subject Discourse (CSD) method. Results: The results indicated a preference for game-centered approaches (CSD1), as they offer a complex environment in which distinct game skills can be developed (such as perception, attention, anticipation and decision making). To a lesser extent, coaches indicated their preference for teaching coordination exercises (justified by the maturation changes that take place during this period), and even less for the technique approach. Conclusion: Based on the coaches’ perspective, games must be a central element to teaching U-12 teams, which permits the development of different aspects involved in decision-making during handball.
{"title":"Teaching handball to players under-12: the perspective of Brazilian coaches","authors":"R. Menezes, R. Marques, M. Nunomura","doi":"10.1590/S1980-6574201700040006","DOIUrl":"https://doi.org/10.1590/S1980-6574201700040006","url":null,"abstract":"Aims: To reveal the pedagogical principles adopted by Brazilian coaches in teaching handball to the under-12 teams (U-12). Methods: The sample included six coaches with extensive coaching experience, whose reports were collected through semi-structured interviews. The data were treated and analyzed according to the Collective Subject Discourse (CSD) method. Results: The results indicated a preference for game-centered approaches (CSD1), as they offer a complex environment in which distinct game skills can be developed (such as perception, attention, anticipation and decision making). To a lesser extent, coaches indicated their preference for teaching coordination exercises (justified by the maturation changes that take place during this period), and even less for the technique approach. Conclusion: Based on the coaches’ perspective, games must be a central element to teaching U-12 teams, which permits the development of different aspects involved in decision-making during handball.","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130414616","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}
Pub Date : 2018-01-08DOI: 10.1590/S1980-6574201700SI00104
P. C. Martins, Tiago Rodrigues de Lima, D. Silva
{"title":"Association between different contexts of physical activity and abdominal obesity and excess weight in adolescents.","authors":"P. C. Martins, Tiago Rodrigues de Lima, D. Silva","doi":"10.1590/S1980-6574201700SI00104","DOIUrl":"https://doi.org/10.1590/S1980-6574201700SI00104","url":null,"abstract":"","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126015836","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}
Pub Date : 2018-01-08DOI: 10.1590/S1980-6574201700040008
Vitor Ciampolini, S. Ibáñez, Eduardo Leal Goulart Nunes, A. Borgatto, J. V. Nascimento
{"title":"Factors associated with basketball field goals made in the 2014 NBA finals","authors":"Vitor Ciampolini, S. Ibáñez, Eduardo Leal Goulart Nunes, A. Borgatto, J. V. Nascimento","doi":"10.1590/S1980-6574201700040008","DOIUrl":"https://doi.org/10.1590/S1980-6574201700040008","url":null,"abstract":"","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133735701","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}
Pub Date : 2017-12-21DOI: 10.1590/S1980-6574201700030015
Rodrigo Aquino, R. Aquino, J. Manechini, B. Bedo, E. Puggina, J. Garganta
Aims: To identify the effects of match location, quality of opponents and match status on possession during the 2015/16 Season of England Premier League. Methods: Three hundred and eighty matches played by 20 teams were analysed. For each match, two values were recorded, resulting in 760 observations. Results: Teams who played at home (51.77 ± 10.22%) presented higher possession values (EF=moderate) than those who played away (48.21 ± 10.30%). Quality of opponents also had a significant difference, as possession was higher (EF=large) when teams played against weak (52.30 ± 9.77%) than strong opponents (46.48 ± 10.38%). The multivariate analysis revealed no interaction between situational variables and possession (p = 0.76). Despite the teams classified as “best-ranking” (1st to 8th position: 50.60 ± 10.35%) presented greater possession (EF=moderate) than “worst-ranking” (9st to 20th position: 47.59 ± 9.74%), no significant differences were found in the comparisons of match status (winner [50.34 ± 10.48%] x drawer [49.95 ± 10.25%] x loser [49.68 ± 10.48%]). Conclusion: General interpretations should be viewed with caution, since the possession can represent an indicator of success for a team but not for others.
{"title":"Effects of match situational variables on possession: The case of England Premier League season 2015/16","authors":"Rodrigo Aquino, R. Aquino, J. Manechini, B. Bedo, E. Puggina, J. Garganta","doi":"10.1590/S1980-6574201700030015","DOIUrl":"https://doi.org/10.1590/S1980-6574201700030015","url":null,"abstract":"Aims: To identify the effects of match location, quality of opponents and match status on possession during the 2015/16 Season of England Premier League. Methods: Three hundred and eighty matches played by 20 teams were analysed. For each match, two values were recorded, resulting in 760 observations. Results: Teams who played at home (51.77 ± 10.22%) presented higher possession values (EF=moderate) than those who played away (48.21 ± 10.30%). Quality of opponents also had a significant difference, as possession was higher (EF=large) when teams played against weak (52.30 ± 9.77%) than strong opponents (46.48 ± 10.38%). The multivariate analysis revealed no interaction between situational variables and possession (p = 0.76). Despite the teams classified as “best-ranking” (1st to 8th position: 50.60 ± 10.35%) presented greater possession (EF=moderate) than “worst-ranking” (9st to 20th position: 47.59 ± 9.74%), no significant differences were found in the comparisons of match status (winner [50.34 ± 10.48%] x drawer [49.95 ± 10.25%] x loser [49.68 ± 10.48%]). Conclusion: General interpretations should be viewed with caution, since the possession can represent an indicator of success for a team but not for others.","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133081777","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}
Pub Date : 2017-12-21DOI: 10.1590/S1980-6574201700030028
Francis Natally de Almeida Anacleto, Janaína da Silva Ferreira, Carlos Januário, José Santos
Aims: to diagnose continuing education initiatives and training needs of physical education teachers. The frequency, limitations and alternatives to continuing education were characterized and self-assessment areas of knowledge essential to teaching were analyzed. Methods: Data were obtained from 18 beginning teachers, using the Professional Career Characterization Questionnaire, an inventory of needs and characterization of continuing training and self-assessment of skills in areas of knowledge essential to teaching. Qualitative data were systematized and quantitative data analyzed by descriptive statistics. Results: Teachers performed 78 continuing training activities over the last four years, 43 in the technical area of physical education and 28 in school-based Physical Education. The most attended subjects were short-duration and graduate courses. The main limitations identified were the financial and time constraints to training. Self-assessment of the teaching areas was deemed to be sufficient, indicating a margin for new learning. Conclusion: The teachers showed commitment to their training, with a focus on teaching and awareness of its importance in professional development.
{"title":"Continuing education of physical education teachers and self-assessment of the teaching domain","authors":"Francis Natally de Almeida Anacleto, Janaína da Silva Ferreira, Carlos Januário, José Santos","doi":"10.1590/S1980-6574201700030028","DOIUrl":"https://doi.org/10.1590/S1980-6574201700030028","url":null,"abstract":"Aims: to diagnose continuing education initiatives and training needs of physical education teachers. The frequency, limitations and alternatives to continuing education were characterized and self-assessment areas of knowledge essential to teaching were analyzed. Methods: Data were obtained from 18 beginning teachers, using the Professional Career Characterization Questionnaire, an inventory of needs and characterization of continuing training and self-assessment of skills in areas of knowledge essential to teaching. Qualitative data were systematized and quantitative data analyzed by descriptive statistics. Results: Teachers performed 78 continuing training activities over the last four years, 43 in the technical area of physical education and 28 in school-based Physical Education. The most attended subjects were short-duration and graduate courses. The main limitations identified were the financial and time constraints to training. Self-assessment of the teaching areas was deemed to be sufficient, indicating a margin for new learning. Conclusion: The teachers showed commitment to their training, with a focus on teaching and awareness of its importance in professional development.","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122696175","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}
Pub Date : 2017-12-21DOI: 10.1590/S1980-6574201700040003
M. V. C. Souza, A. Lino, L. Ruffoni, M. Domingos, M. Barbosa, M. Rodrigues, F. C. Ferreira, L. M. Tomaz, Gustavo Henrique Rigo Canevazzi, Natália Marchiori da Silva, Jeferson Américo Ancelmo Teixeira, R. Leite, G. Shiguemoto, S. Perez
Aims: The aim of the present study was to investigate the influence of resistance training (RT) and hormone replacement (HR) on MMP-2 activity, biomechanical and physical properties bone of ovariectomized (OVX) rats. Methods: Sprague-Dawley female rats were grouped into six experimental groups (n = 11 per group): sham-operated sedentary (SHAM Sed), ovariectomized sedentary (OVX Sed), sham-operated resistance training (SHAM RT), ovariectomized resistance training (OVX RT), ovariectomized sedentary hormone replacement (OVX Sed-HR), and ovariectomized resistance training hormone replacement (OVX RT-HR). HR groups received implanted silastic capsules with a 5% solution of 17β-estradiol (50 mg 17β-estradiol/ml of sunflower oil). In a 12-week RT period (27 sessions; 4–9 climbs) the animals climbed a 1.1 m vertical ladder with weights attached to their tails. Biomechanical and physical bone analyses were performed using a universal testing machine, and MMP-2 activity analysis was done by zymography Results: Bone density and bone mineral content was higher in the RT and HR groups. The MMP-2 activity was higher in the RT and HR groups. The biomechanical analysis (stiffness, fracture load and maximum load) demonstrated better bone tissue quality in the RT associated with HR. Conclusion: The RT alone as well as when it is associated with HR was efficient in increasing MMP-2 activity, biomechanical and biophysical properties bone of ovariectomized rats.
{"title":"Resistance training and hormone replacement increase MMP-2 activity, quality and quantity of bone in ovariectomized rats","authors":"M. V. C. Souza, A. Lino, L. Ruffoni, M. Domingos, M. Barbosa, M. Rodrigues, F. C. Ferreira, L. M. Tomaz, Gustavo Henrique Rigo Canevazzi, Natália Marchiori da Silva, Jeferson Américo Ancelmo Teixeira, R. Leite, G. Shiguemoto, S. Perez","doi":"10.1590/S1980-6574201700040003","DOIUrl":"https://doi.org/10.1590/S1980-6574201700040003","url":null,"abstract":"Aims: The aim of the present study was to investigate the influence of resistance training (RT) and hormone replacement (HR) on MMP-2 activity, biomechanical and physical properties bone of ovariectomized (OVX) rats. Methods: Sprague-Dawley female rats were grouped into six experimental groups (n = 11 per group): sham-operated sedentary (SHAM Sed), ovariectomized sedentary (OVX Sed), sham-operated resistance training (SHAM RT), ovariectomized resistance training (OVX RT), ovariectomized sedentary hormone replacement (OVX Sed-HR), and ovariectomized resistance training hormone replacement (OVX RT-HR). HR groups received implanted silastic capsules with a 5% solution of 17β-estradiol (50 mg 17β-estradiol/ml of sunflower oil). In a 12-week RT period (27 sessions; 4–9 climbs) the animals climbed a 1.1 m vertical ladder with weights attached to their tails. Biomechanical and physical bone analyses were performed using a universal testing machine, and MMP-2 activity analysis was done by zymography Results: Bone density and bone mineral content was higher in the RT and HR groups. The MMP-2 activity was higher in the RT and HR groups. The biomechanical analysis (stiffness, fracture load and maximum load) demonstrated better bone tissue quality in the RT associated with HR. Conclusion: The RT alone as well as when it is associated with HR was efficient in increasing MMP-2 activity, biomechanical and biophysical properties bone of ovariectomized rats.","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122123026","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}
Pub Date : 2017-12-21DOI: 10.1590/S1980-6574201700030027
João Bourbon de Albuquerque, Walderi Monteiro da Silva Júnior, M. Barreto, J. V. Bonfim, Marco Antônio Prado Nunes
Aims: To verify the incidence of injuries in professional soccer athletes in Aracaju-SE and to identify associated factors. Methods: This was an observational, prospective cohort study involving 39 healthy athletes, followed for seven months and evaluated on four occasions (start on preseason and two evaluations with three months of interval between each) through data collection sheet and orthopedic physical examination. Results: Participants were 20 athletes from Club Sportivo Sergipe and 19 from Associação Desportiva Confiança, with mean age of 26 years (CI 95%: 25.2-28 years), and mean career time of 9.6 years (CI 95%: 7.9-11.3 years). The 13 (2.4 / 1000 hours) diagnosed injuries occurred almost exclusively in the lower limbs and thigh muscle stretch was the most common injury. Injuries were mostly mild to moderate (69%). There was no significant association with any of the variables analyzed. Conclusion: Low incidence of injuries was observed in this study. Predominantly, lesions occurred on non-rainy days and were due to trauma. Lower limbs were the most affected location and thigh stretch was the most common injury.
{"title":"Incidence of musculoskeletal injuries in professional soccer players from Aracaju/SE-Brazil.","authors":"João Bourbon de Albuquerque, Walderi Monteiro da Silva Júnior, M. Barreto, J. V. Bonfim, Marco Antônio Prado Nunes","doi":"10.1590/S1980-6574201700030027","DOIUrl":"https://doi.org/10.1590/S1980-6574201700030027","url":null,"abstract":"Aims: To verify the incidence of injuries in professional soccer athletes in Aracaju-SE and to identify associated factors. Methods: This was an observational, prospective cohort study involving 39 healthy athletes, followed for seven months and evaluated on four occasions (start on preseason and two evaluations with three months of interval between each) through data collection sheet and orthopedic physical examination. Results: Participants were 20 athletes from Club Sportivo Sergipe and 19 from Associação Desportiva Confiança, with mean age of 26 years (CI 95%: 25.2-28 years), and mean career time of 9.6 years (CI 95%: 7.9-11.3 years). The 13 (2.4 / 1000 hours) diagnosed injuries occurred almost exclusively in the lower limbs and thigh muscle stretch was the most common injury. Injuries were mostly mild to moderate (69%). There was no significant association with any of the variables analyzed. Conclusion: Low incidence of injuries was observed in this study. Predominantly, lesions occurred on non-rainy days and were due to trauma. Lower limbs were the most affected location and thigh stretch was the most common injury.","PeriodicalId":267352,"journal":{"name":"Motriz-revista De Educacao Fisica","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121103597","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}
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