Pub Date : 2018-11-23DOI: 10.1590/S1980-6574201800040010
Valentine Z. Vargas, C. A. Lira, R. Vancini, Angeles Bonal Rosell Rayes, M. Andrade
– Aims: To describe the relationship between variables related to body composition and peak oxygen uptake (V̇O2 peak) and to verify whether fat mass can affect these relationships. Methods: Eighty participants underwent cardiopulmonary exercise testing to measure V̇O2 peak and a body composition assessment to measure fat mass, fat free mass (FFM), and total body mass (BM). Results: There were significant relationships between V̇O2 peak relative to FFM (fat free mass) (mL/kgFFM/min) and absolute fat mass (kg) (r=-0.50, p<0.001) and relative fat mass (%) (r=-0.56, p<0.001). Absolute V̇O2 peak (L/min) had a high positive relationship with FFM (r=0.83, p<0.0001); the relationship between V̇O2 peak (L/min) and FFM remained high and positive even when accounting for absolute fat mass (kg) (r=0.83, p<0.001). V̇O2 peak relative to total body mass (mL/kgBM/min) showed a high negative relationship with relative fat mass (%) (r=-0.89, p<0.001) and a positive relationship with fat free mass (kg) (r=0.57, p<0.001), which did not change when accounting for fat mass (kg) (r=0.56, p<0.001). Conclusion: These data indicate that the physiological ability of tissue to consume oxygen (V̇O2 peak in mL/kgFFM/min) is negatively associated with fat mass. Moreover, the individual’s cardiorespiratory capacity to transport oxygen for working muscles (V̇O2 peak in L/min) is strongly related to absolute FFM, and this association is not affected by fat mass. Finally, a better body mass composition (high FFM and low fat mass) is important for aerobic physical fitness (V̇O2 peak in mL/kgBM/min) and improved physiological ability of tissue to consume oxygen (V̇O2 peak in mL/kgFFM/min).
{"title":"Fat mass is negatively associated with the physiological ability of tissue to consume oxygen","authors":"Valentine Z. Vargas, C. A. Lira, R. Vancini, Angeles Bonal Rosell Rayes, M. Andrade","doi":"10.1590/S1980-6574201800040010","DOIUrl":"https://doi.org/10.1590/S1980-6574201800040010","url":null,"abstract":"– Aims: To describe the relationship between variables related to body composition and peak oxygen uptake (V̇O2 peak) and to verify whether fat mass can affect these relationships. Methods: Eighty participants underwent cardiopulmonary exercise testing to measure V̇O2 peak and a body composition assessment to measure fat mass, fat free mass (FFM), and total body mass (BM). Results: There were significant relationships between V̇O2 peak relative to FFM (fat free mass) (mL/kgFFM/min) and absolute fat mass (kg) (r=-0.50, p<0.001) and relative fat mass (%) (r=-0.56, p<0.001). Absolute V̇O2 peak (L/min) had a high positive relationship with FFM (r=0.83, p<0.0001); the relationship between V̇O2 peak (L/min) and FFM remained high and positive even when accounting for absolute fat mass (kg) (r=0.83, p<0.001). V̇O2 peak relative to total body mass (mL/kgBM/min) showed a high negative relationship with relative fat mass (%) (r=-0.89, p<0.001) and a positive relationship with fat free mass (kg) (r=0.57, p<0.001), which did not change when accounting for fat mass (kg) (r=0.56, p<0.001). Conclusion: These data indicate that the physiological ability of tissue to consume oxygen (V̇O2 peak in mL/kgFFM/min) is negatively associated with fat mass. Moreover, the individual’s cardiorespiratory capacity to transport oxygen for working muscles (V̇O2 peak in L/min) is strongly related to absolute FFM, and this association is not affected by fat mass. Finally, a better body mass composition (high FFM and low fat mass) is important for aerobic physical fitness (V̇O2 peak in mL/kgBM/min) and improved physiological ability of tissue to consume oxygen (V̇O2 peak in mL/kgFFM/min).","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"SE-1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126571053","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 : 2018-11-23DOI: 10.1590/S1980-6574201800040009
Elghoul Yousri, Fatma Bahri, Chaari Nesrine, Souissi Nizar, F. Mohamed
– Aim: The current study examined the relationship between cognitive performances (executive function, selective attention and reaction time), fine motor coordination skills and perceived difficulty after active transport to school. Method: Fifteen right-handed children’s underwent session, 15-min walking session at 30% (WS1) and 15-min walking session (WS2) at 50% of maximal aerobic speed. Subjects performed tests to evaluate executive function, reaction time and selective attention. After each trial, a questionnaire of perceived difficulty (PD) was completed. Results: Average time in TMT part A (F(2,22) = 4.44; p = 0.024; η2= 0.288) and TMT part B (F(2,22) = 4.54; p = 0.022; η2= 0.292), and committed errors (F(2,22) = 7.78; p = 0.003; η2= 0.414) was improved after walking sessions in comparison by CS. The mean scores were significantly higher after walking sessions for both long and short-distance throws (p < 0.05). Moreover, a significant negative correlation was found between committed errors (TMT part B) and both dart throwing consistency and accuracy (r = 0.6; r = 0.64; p < 0.05) (respectively). Post-hoc analysis showed that PD was better after walking sessions with low intensity for both short and long throwing distance. However, it seems that walking session with sustained intensity allows speed and accuracy improvement of cognitive processing. Conclusion: Thus, active walking to school with low intensity was sufficient to produce positives changes in psychomotor performance and decrease in perceived difficulty scores. By including individual differences in gross motor coordination as well as physical activity level, the exact nature of the link between psychomotor skills and cognitive performance could be more addressed.
{"title":"The effect of matinal active walking on cognitive, fine motor coordination task performances and perceived difficulty in 12-13 young school boys","authors":"Elghoul Yousri, Fatma Bahri, Chaari Nesrine, Souissi Nizar, F. Mohamed","doi":"10.1590/S1980-6574201800040009","DOIUrl":"https://doi.org/10.1590/S1980-6574201800040009","url":null,"abstract":"– Aim: The current study examined the relationship between cognitive performances (executive function, selective attention and reaction time), fine motor coordination skills and perceived difficulty after active transport to school. Method: Fifteen right-handed children’s underwent session, 15-min walking session at 30% (WS1) and 15-min walking session (WS2) at 50% of maximal aerobic speed. Subjects performed tests to evaluate executive function, reaction time and selective attention. After each trial, a questionnaire of perceived difficulty (PD) was completed. Results: Average time in TMT part A (F(2,22) = 4.44; p = 0.024; η2= 0.288) and TMT part B (F(2,22) = 4.54; p = 0.022; η2= 0.292), and committed errors (F(2,22) = 7.78; p = 0.003; η2= 0.414) was improved after walking sessions in comparison by CS. The mean scores were significantly higher after walking sessions for both long and short-distance throws (p < 0.05). Moreover, a significant negative correlation was found between committed errors (TMT part B) and both dart throwing consistency and accuracy (r = 0.6; r = 0.64; p < 0.05) (respectively). Post-hoc analysis showed that PD was better after walking sessions with low intensity for both short and long throwing distance. However, it seems that walking session with sustained intensity allows speed and accuracy improvement of cognitive processing. Conclusion: Thus, active walking to school with low intensity was sufficient to produce positives changes in psychomotor performance and decrease in perceived difficulty scores. By including individual differences in gross motor coordination as well as physical activity level, the exact nature of the link between psychomotor skills and cognitive performance could be more addressed.","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130371473","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 : 2018-11-23DOI: 10.1590/S1980-6574201800040006
Milena Pedro de Morais, Graciele Massoli Rodrigues
– Aims: The Swimming has numerous benefits in the physiological, psychological, social and cognitive aspects for the person with spinal cord injury. However, the process of learning the swim must be done in order to take advantage of the potential and the motor functions of the swimmer, through the planning of actions and teaching strategies that seek an effective swim with the fewest adaptations possible and respecting the specific conditions of the lesion. The objective was to verify how the teacher evaluates the motor function of the swimmer with the SCI and to understand how this instructional process acts in the learning of swimming through the perspective of the teacher. Methods: Participated in the research, twelve Physical Education teachers, who work with spinal cord injury swimmers. Data were collected through semi-structured interviews and a field diary. Results: The results demonstrated that, depending on the teaching style adopted by the teacher, he does not consider the student’s feedback and perception. He acts only on the results and possibilities he sees. Therefore, in the teacher’s view, the adaptability of the swimming technique is conditioned to the motor limitation of the individual with SCI, or according to the teacher’s perspective on the functionality. Conclusion: We conclude that the use of strategies based on the traditional swimming technique showed that there is little awareness or lack of knowledge about the work of promoting the swimmer’s motor function, confirmed to the extent that the contribution of the specific literature is incipient and does not satisfy the teacher’s desire for knowledge.
{"title":"Strategies to teach swimming to people with Spinal Cord Injury (SCI)","authors":"Milena Pedro de Morais, Graciele Massoli Rodrigues","doi":"10.1590/S1980-6574201800040006","DOIUrl":"https://doi.org/10.1590/S1980-6574201800040006","url":null,"abstract":"– Aims: The Swimming has numerous benefits in the physiological, psychological, social and cognitive aspects for the person with spinal cord injury. However, the process of learning the swim must be done in order to take advantage of the potential and the motor functions of the swimmer, through the planning of actions and teaching strategies that seek an effective swim with the fewest adaptations possible and respecting the specific conditions of the lesion. The objective was to verify how the teacher evaluates the motor function of the swimmer with the SCI and to understand how this instructional process acts in the learning of swimming through the perspective of the teacher. Methods: Participated in the research, twelve Physical Education teachers, who work with spinal cord injury swimmers. Data were collected through semi-structured interviews and a field diary. Results: The results demonstrated that, depending on the teaching style adopted by the teacher, he does not consider the student’s feedback and perception. He acts only on the results and possibilities he sees. Therefore, in the teacher’s view, the adaptability of the swimming technique is conditioned to the motor limitation of the individual with SCI, or according to the teacher’s perspective on the functionality. Conclusion: We conclude that the use of strategies based on the traditional swimming technique showed that there is little awareness or lack of knowledge about the work of promoting the swimmer’s motor function, confirmed to the extent that the contribution of the specific literature is incipient and does not satisfy the teacher’s desire for knowledge.","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115136887","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 : 2018-11-21DOI: 10.1590/S1980-6574201800040005
C. D. Silva, A. Natali, C. Carling, J. Lima, M. G. Bara Filho, Emerson S. Garcia, J. Marins
Aims: The aims of this study were: i) to verify whether player internal load (PIL) monitored via heart rate (HR) varies with game-time and playing position; ii) whether intermittent running capacity (IRC) is related to the maintenance of within-match PIL in elite youth (U-15) soccer players. Method: Twenty-one elite soccer players (14±0.5 yrs, 172±7 cm, 63±6 kg) had their heart rate monitored (beats/min) in five matches and were tested twice for IRC (Yo-YoIR2, distance [m]) over a seven-week competitive season. Percentage of maximal heart rate (%HRmax) and time spent (TS%) in five zones (Z1[ 96%]) were our PIL indexes. Data from three complete games in the same position of each player were analyzed and matches halves, time intervals (T1 to T6), and playing positions (fullbacks, central defenders and forwards [N=5 each], midfielders [N=6]) were compared, and the relationship between IRC and within-match PIL was determined. Results: PIL was higher in 1st (86±3%) than in the 2nd half (84±4%; p<.001). The 2nd half had more TS% in Z1 and Z2 (p<.05). PIL in T4 was the lowest (p<.01), and in T6, it was lower than T1 and T2 (p<.01). Fullbacks and midfielders showed higher PIL and higher TS% in Z4 (p<.05) than the other positional roles. The average IRC correlated with PIL in T6 (r=.56, p<.01) only. Conclusion: In conclusion, the internal load in elite youth (U-15) soccer players varies with game-time and playing position; and their IRC is related to the maintenance of within-match PIL.
{"title":"Match internal load in youth elite soccer players is period, playing position and intermittent running capacity dependent","authors":"C. D. Silva, A. Natali, C. Carling, J. Lima, M. G. Bara Filho, Emerson S. Garcia, J. Marins","doi":"10.1590/S1980-6574201800040005","DOIUrl":"https://doi.org/10.1590/S1980-6574201800040005","url":null,"abstract":"Aims: The aims of this study were: i) to verify whether player internal load (PIL) monitored via heart rate (HR) varies with game-time and playing position; ii) whether intermittent running capacity (IRC) is related to the maintenance of within-match PIL in elite youth (U-15) soccer players. Method: Twenty-one elite soccer players (14±0.5 yrs, 172±7 cm, 63±6 kg) had their heart rate monitored (beats/min) in five matches and were tested twice for IRC (Yo-YoIR2, distance [m]) over a seven-week competitive season. Percentage of maximal heart rate (%HRmax) and time spent (TS%) in five zones (Z1[ 96%]) were our PIL indexes. Data from three complete games in the same position of each player were analyzed and matches halves, time intervals (T1 to T6), and playing positions (fullbacks, central defenders and forwards [N=5 each], midfielders [N=6]) were compared, and the relationship between IRC and within-match PIL was determined. Results: PIL was higher in 1st (86±3%) than in the 2nd half (84±4%; p<.001). The 2nd half had more TS% in Z1 and Z2 (p<.05). PIL in T4 was the lowest (p<.01), and in T6, it was lower than T1 and T2 (p<.01). Fullbacks and midfielders showed higher PIL and higher TS% in Z4 (p<.05) than the other positional roles. The average IRC correlated with PIL in T6 (r=.56, p<.01) only. Conclusion: In conclusion, the internal load in elite youth (U-15) soccer players varies with game-time and playing position; and their IRC is related to the maintenance of within-match PIL.","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132984473","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 : 2018-11-08DOI: 10.1590/S1980-6574201800040001
R. Menezes, N. Ramos, R. Marques, M. Nunomura
– Aims: To identify the teaching approaches preferred by Brazilian coaches in the U-16 and U-18 women’s teams and whether it is possible to apply long-term goals for handball training. Methods: Six experienced coaches were interviewed individually in a semi-structured format. Data were transcribed and analyzed according to the Collective Subject Discourse (CSD) method. Results: Coaches revealed a choice for the situational approach and global-functional approach in U-16 teams. In U-18 teams, coaches’ choices were for the technique and situational approaches. The change of coaches’ choice might be based on players’ specialization, suggested to U-18 teams when coaches highlighted the increased demand for performance. On players’ transition from U-16 to U-18 teams, the coaches showed less preference for the global-functional approach and increasing evidence of the technique approach. Conclusion: Global-functional and situational approaches should be given a prominent position in these teams, especially due to the development of technical-tactical aspects. However, the technical approach was recognized as a central position in U-18 teams, probably related to players’ specialization and technical improvement, although it does not offer a rich environment for the development of players’ decision making.
{"title":"Teaching handball to U-16 and U-18 women’s teams: coaches’ perspective on the long-term","authors":"R. Menezes, N. Ramos, R. Marques, M. Nunomura","doi":"10.1590/S1980-6574201800040001","DOIUrl":"https://doi.org/10.1590/S1980-6574201800040001","url":null,"abstract":"– Aims: To identify the teaching approaches preferred by Brazilian coaches in the U-16 and U-18 women’s teams and whether it is possible to apply long-term goals for handball training. Methods: Six experienced coaches were interviewed individually in a semi-structured format. Data were transcribed and analyzed according to the Collective Subject Discourse (CSD) method. Results: Coaches revealed a choice for the situational approach and global-functional approach in U-16 teams. In U-18 teams, coaches’ choices were for the technique and situational approaches. The change of coaches’ choice might be based on players’ specialization, suggested to U-18 teams when coaches highlighted the increased demand for performance. On players’ transition from U-16 to U-18 teams, the coaches showed less preference for the global-functional approach and increasing evidence of the technique approach. Conclusion: Global-functional and situational approaches should be given a prominent position in these teams, especially due to the development of technical-tactical aspects. However, the technical approach was recognized as a central position in U-18 teams, probably related to players’ specialization and technical improvement, although it does not offer a rich environment for the development of players’ decision making.","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114729909","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 : 2018-10-18DOI: 10.1590/S1980-657420180003E017517
Lucas Gonçalves da Cruz, H. R. Zanetti, A. Andaki, G. Mota, O. Neto, E. L. Mendes
— Aims: To investigate the effect of 12 weeks of intradialytic aerobic training on serum levels of interleukin-1β, interleukin-6, interleukin-8, interleukin-10, tumor necrosis factor alpha and functional capacity. Methods: Thirty sedentary volunteers were randomly assigned to either to exercise or control group. Exercise group were submitted to 12 weeks of aerobic training performed on a cycle ergometer for 30 minutes at intensity rated using the Borg scale (6 to 7) three times a week while control group kept the daily habits. Results: After 12 weeks only exercise group presented a significant reduction of serum levels of interleukin-1β, interleukin-6, interleukin-8, tumor necrosis factor alpha and an increase in serum levels of interleukin-10 and functional capacity. Conclusion: Twelve weeks of intradialytic aerobic training was effective in controlling inflammation and improving the functional ability of patients with chronic kidney disease.
{"title":"Intradialytic aerobic training improves inflammatory markers in patients with chronic kidney disease: a randomized clinical trial","authors":"Lucas Gonçalves da Cruz, H. R. Zanetti, A. Andaki, G. Mota, O. Neto, E. L. Mendes","doi":"10.1590/S1980-657420180003E017517","DOIUrl":"https://doi.org/10.1590/S1980-657420180003E017517","url":null,"abstract":"— Aims: To investigate the effect of 12 weeks of intradialytic aerobic training on serum levels of interleukin-1β, interleukin-6, interleukin-8, interleukin-10, tumor necrosis factor alpha and functional capacity. Methods: Thirty sedentary volunteers were randomly assigned to either to exercise or control group. Exercise group were submitted to 12 weeks of aerobic training performed on a cycle ergometer for 30 minutes at intensity rated using the Borg scale (6 to 7) three times a week while control group kept the daily habits. Results: After 12 weeks only exercise group presented a significant reduction of serum levels of interleukin-1β, interleukin-6, interleukin-8, tumor necrosis factor alpha and an increase in serum levels of interleukin-10 and functional capacity. Conclusion: Twelve weeks of intradialytic aerobic training was effective in controlling inflammation and improving the functional ability of patients with chronic kidney disease.","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129139593","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 : 2018-10-18DOI: 10.1590/S1980-657420180003E008318
Márcio Rinaldo, J. L. Jacinto, F. Pacagnelli, Leonardo Shigaki, A. Ribeiro, M. C. W. Balvedi, L. R. Altimari, Douglas Kratki da Silva, Walquíria Batista Andrade, R. A. Silva, A. Aguiar
Aims: The purpose of this study was to examine the effects of training volume (1 vs. 3 sets) on lower-body muscle strength in untrained young men. Methodsː Eighteen untrained young men were recruited and their legs were trained with 1 or 3 sets (in a contralateral design) for 6 weeks, using a knee extension machine. Isokinetic peak torque and one repetition maximum (1RM) were assessed at pre- and post-training. Resultsː There was a similar improvement in the 1RM strength (1SET: +14.8% vs. 3SET: 16.3%, P > 0.05) and peak torque (1SET: +8.1% vs. 3SET: 9.3%, P > 0.05) for both conditions from pre- to post-training. The effect size (ES) for the change in 1RM was moderate for both conditions (1SET: 1.39 vs. 3SET: 1.41), and peak torque was trivial and small for 1SET (0.47) and 3SET (0.55), respectively. Additionally, there were no significant (P > 0.05) differences in the dietary intakes from pre- to post-training. Conclusionsː Our results indicate that 1 set is as effective as 3 sets for increasing lower-body muscle strength after a short-term RT period (6 weeks) in untrained young men.
目的:本研究的目的是检查训练量(1组vs. 3组)对未经训练的年轻男性下半身肌肉力量的影响。方法:招募18名未受过训练的青年男性，使用膝关节伸展机进行1组或3组(对侧设计)的腿训练，为期6周。在训练前和训练后分别评估等速峰值扭矩和一次重复最大值(1RM)。结果:从训练前到训练后，两种情况下的1RM强度(1SET: +14.8% vs. 3SET: 16.3%， P > 0.05)和峰值扭矩(1SET: +8.1% vs. 3SET: 9.3%， P > 0.05)都有类似的改善。在两种情况下，1RM变化的效应大小(ES)都是中等的(1SET: 1.39 vs. 3SET: 1.41)，峰值扭矩在1SET(0.47)和3SET(0.55)下分别是微不足道和很小的。此外，训练前和训练后的饲粮摄取量无显著差异(P < 0.05)。结论:我们的研究结果表明，在未经训练的年轻男性中，在短期RT期(6周)后，1组和3组对于增加下半身肌肉力量的效果是一样的。
{"title":"Effects of training volume on lower-body muscle strength in untrained young men: a contralateral control study","authors":"Márcio Rinaldo, J. L. Jacinto, F. Pacagnelli, Leonardo Shigaki, A. Ribeiro, M. C. W. Balvedi, L. R. Altimari, Douglas Kratki da Silva, Walquíria Batista Andrade, R. A. Silva, A. Aguiar","doi":"10.1590/S1980-657420180003E008318","DOIUrl":"https://doi.org/10.1590/S1980-657420180003E008318","url":null,"abstract":"Aims: \u0000 \u0000The purpose of this study was to examine the effects of training volume (1 vs. 3 sets) on lower-body muscle strength in untrained young men. \u0000 \u0000Methodsː \u0000 \u0000Eighteen untrained young men were recruited and their legs were trained with 1 or 3 sets (in a contralateral design) for 6 weeks, using a knee extension machine. Isokinetic peak torque and one repetition maximum (1RM) were assessed at pre- and post-training. \u0000 \u0000Resultsː \u0000 \u0000There was a similar improvement in the 1RM strength (1SET: +14.8% vs. 3SET: 16.3%, P > 0.05) and peak torque (1SET: +8.1% vs. 3SET: 9.3%, P > 0.05) for both conditions from pre- to post-training. The effect size (ES) for the change in 1RM was moderate for both conditions (1SET: 1.39 vs. 3SET: 1.41), and peak torque was trivial and small for 1SET (0.47) and 3SET (0.55), respectively. Additionally, there were no significant (P > 0.05) differences in the dietary intakes from pre- to post-training. \u0000 \u0000Conclusionsː \u0000 \u0000Our results indicate that 1 set is as effective as 3 sets for increasing lower-body muscle strength after a short-term RT period (6 weeks) in untrained young men.","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134167178","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 : 2018-10-18DOI: 10.1590/S1980-657420180003E001418
Ila Mf Bendassolli, A. Oliveira, E. C. Costa, Dyego Lb de Souza, Eulália Maia
Aims: Sedentary behavior (SB) has emerged as an important risk factor for poor health. Evidence showed that patients with heart failure (HF) exhibit high levels of SB, and that high SB increases mortality among such patients. We aimed to identify factors associated with SB in HF patients. Methods: A cross-sectional study was carried out with adults with HF and categorized under New York Heart Association (NYHA) functional class I–III. Sociodemographic, clinical, and health information were gathered. Evaluation of SB (by sitting time) and moderate-to-vigorous physical activity (MVPA) was performed by self-reported measures. Functional capacity was assessed using the Duke Activity Status Index. Simple and multivariate linear regression analyses were performed to identify the most suitable predictive model. Results: The sample (n = 80) comprised predominantly of patients in functional class I, men, and with an average age of 50.8 years. Time spent on SB totaled to 7.69 ± 2.35 h/day. Weekly volume of MVPA, functional capacity, and previous stroke were predictors of higher SB. Using simple linear regression analysis, the variables body mass index, quality of life, NYHA functional class, total comorbidities, dyslipidemia, MVPA in the leisure domain, and the use of diuretics, statins, and sildenafil were shown to have a statistically significant association with SB. Conclusion: In patients with HF, a longer time spent in SB was associated with low volumes of MVPA, low functional capacity, and history of stroke. More studies are needed to corroborate these findings.
{"title":"Sedentary behavior is associated with physical activity, functional capacity, and a history of stroke in patients with heart failure. A cross-sectional study","authors":"Ila Mf Bendassolli, A. Oliveira, E. C. Costa, Dyego Lb de Souza, Eulália Maia","doi":"10.1590/S1980-657420180003E001418","DOIUrl":"https://doi.org/10.1590/S1980-657420180003E001418","url":null,"abstract":"Aims: Sedentary behavior (SB) has emerged as an important risk factor for poor health. Evidence showed that patients with heart failure (HF) exhibit high levels of SB, and that high SB increases mortality among such patients. We aimed to identify factors associated with SB in HF patients. Methods: A cross-sectional study was carried out with adults with HF and categorized under New York Heart Association (NYHA) functional class I–III. Sociodemographic, clinical, and health information were gathered. Evaluation of SB (by sitting time) and moderate-to-vigorous physical activity (MVPA) was performed by self-reported measures. Functional capacity was assessed using the Duke Activity Status Index. Simple and multivariate linear regression analyses were performed to identify the most suitable predictive model. Results: The sample (n = 80) comprised predominantly of patients in functional class I, men, and with an average age of 50.8 years. Time spent on SB totaled to 7.69 ± 2.35 h/day. Weekly volume of MVPA, functional capacity, and previous stroke were predictors of higher SB. Using simple linear regression analysis, the variables body mass index, quality of life, NYHA functional class, total comorbidities, dyslipidemia, MVPA in the leisure domain, and the use of diuretics, statins, and sildenafil were shown to have a statistically significant association with SB. Conclusion: In patients with HF, a longer time spent in SB was associated with low volumes of MVPA, low functional capacity, and history of stroke. More studies are needed to corroborate these findings.","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130554043","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 : 2018-10-08DOI: 10.1590/S1980-6574201800020017
D. Oliveira, J. N. Junior, P. Cunha, Jéssica Fernanda Siqueira, Érica Cristina Félix da Silva, C. Cavaglieri
{"title":"Factors associated with body image dissatisfaction of weight training practitioners","authors":"D. Oliveira, J. N. Junior, P. Cunha, Jéssica Fernanda Siqueira, Érica Cristina Félix da Silva, C. Cavaglieri","doi":"10.1590/S1980-6574201800020017","DOIUrl":"https://doi.org/10.1590/S1980-6574201800020017","url":null,"abstract":"","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124305504","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 : 2018-10-02DOI: 10.1590/S1980-657420180003E003618
P. R. Santos-Silva, J. Greve, Hector Norman Espada Novillo, S. Haddad, C. Santos, Renata Barco Leme, R. Franco, L. Cominato, A. T. M. Araujo, F. Santos, D. Damiani, R. L. Rica, D. Bocalini
Aims: The aim of this study was to verify body composition, cardiorespiratory fitness, and biochemical markers of prepubertal overweight and obese boys to a 16-week futsal training program. Methods: Sixteen boys (age: 7-10 y, body mass index>thanat 95th percentileaccording to Center for Disease Control and Prevention; 35.5±7.4 percent fat) participated to futsal training program. The assessment of body composition was estimated using skinfold thickness, and the following variables were evaluated: total body mass, body mass index, body fat percentage, and lean body mass. Aerobic fitness measurementwas performed by gas exchange analysis in treadmill. In addition, an evaluation of the biochemical profile was conducted: triglycerides, total cholesterol, low density lipoprotein cholesterol, high-density lipoprotein cholesterol, plasma concentrations of glucose, and insulin. The futsal intervention included 60-min sessions performed two times/week. The mean intensity during training was between 57 to 88% of maximal heart rate of the age-predicted. Individual portable heart rate monitor controlled training intensity. Results: Significant increases in total body mass (4%), height (3%), lean body mass (8%), and significant 6%-decrease in body fat percentage was observed. Body mass index remained unchanged. Maximal oxygen uptake was elevated (p<0.018) by 11%. Biochemical markers were not modified after intervention. No association was found between body composition and metabolic variables. The effect size of futsal training on most variables was small (<0.5). Conclusion: Controlled intensity and adherence to this 16-week futsal training program were determinant to enhance body composition, and cardiorespiratory fitness in this group of prepubertal boys.
{"title":"Futsal improve body composition and cardiorespiratory fitness in overweight and obese children. A pilot study","authors":"P. R. Santos-Silva, J. Greve, Hector Norman Espada Novillo, S. Haddad, C. Santos, Renata Barco Leme, R. Franco, L. Cominato, A. T. M. Araujo, F. Santos, D. Damiani, R. L. Rica, D. Bocalini","doi":"10.1590/S1980-657420180003E003618","DOIUrl":"https://doi.org/10.1590/S1980-657420180003E003618","url":null,"abstract":"Aims: The aim of this study was to verify body composition, cardiorespiratory fitness, and biochemical markers of prepubertal overweight and obese boys to a 16-week futsal training program. Methods: Sixteen boys (age: 7-10 y, body mass index>thanat 95th percentileaccording to Center for Disease Control and Prevention; 35.5±7.4 percent fat) participated to futsal training program. The assessment of body composition was estimated using skinfold thickness, and the following variables were evaluated: total body mass, body mass index, body fat percentage, and lean body mass. Aerobic fitness measurementwas performed by gas exchange analysis in treadmill. In addition, an evaluation of the biochemical profile was conducted: triglycerides, total cholesterol, low density lipoprotein cholesterol, high-density lipoprotein cholesterol, plasma concentrations of glucose, and insulin. The futsal intervention included 60-min sessions performed two times/week. The mean intensity during training was between 57 to 88% of maximal heart rate of the age-predicted. Individual portable heart rate monitor controlled training intensity. Results: Significant increases in total body mass (4%), height (3%), lean body mass (8%), and significant 6%-decrease in body fat percentage was observed. Body mass index remained unchanged. Maximal oxygen uptake was elevated (p<0.018) by 11%. Biochemical markers were not modified after intervention. No association was found between body composition and metabolic variables. The effect size of futsal training on most variables was small (<0.5). Conclusion: Controlled intensity and adherence to this 16-week futsal training program were determinant to enhance body composition, and cardiorespiratory fitness in this group of prepubertal boys.","PeriodicalId":153884,"journal":{"name":"Motriz: Revista de Educação Física","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130971357","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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