-
Analysis of Force in Human Muscle Using EMG in Hot Rolling Mill
K. Govindaraju,
B. Sasi Kumar,
K. Raja,
K. Murugabhoopathy3
Issue:
Volume 3, Issue 3, May 2015
Pages:
41-45
Received:
20 March 2015
Accepted:
8 April 2015
Published:
22 April 2015
Abstract: The electromyography (EMG) is the measure of electrical activity produced by the muscles which is usually represented as a function of time. This electromyography can be used in various applications including identifying neuromuscular diseases, control signal for prosthetic devices, controlling machines, robots etc. The existing system commercial EMG-controlled devices are limited to rudimentary control capabilities of either discrete states (e.g. hand close/open), or one degree of freedom proportional control. The proposed system investigates the relationship between forearm electrical activity and forces exerted by the fingertips. This system is used to calculate the muscular force while lifting, pulling, pushing the object in Hot Rolling Mill with the help of electromyography. The load cell is used to calculate the force exerted by the fingertips of the human. The value of the force exerted is displayed by using the LCD. A threshold force value is fixed and it is compared with the actual force exerted by the human being. If the actual force exceeds the threshold value human beings will be affected in a way like sprain and bone rubbing etc., so an alarm is provided to indicate this situation to avoid the above mentioned accidents. The proposed system is simulated by using keil C and the simulated results are verified.
Abstract: The electromyography (EMG) is the measure of electrical activity produced by the muscles which is usually represented as a function of time. This electromyography can be used in various applications including identifying neuromuscular diseases, control signal for prosthetic devices, controlling machines, robots etc. The existing system commercial E...
Show More
-
Study of Heart Rate Variability and Stress Markers in Basketball Players Submitted to Selective Loads Periodization System
José Henrique Mazon,
Ada Clarice Gastaldi,
Marli Cardoso Martins-Pinge,
João Eduardo de Araújo,
Hugo Celso Dutra de Souza
Issue:
Volume 3, Issue 3, May 2015
Pages:
46-51
Received:
24 March 2015
Accepted:
11 April 2015
Published:
21 May 2015
Abstract: The decrease in the performance of athlete is often associated with an imbalance between workload and recovery period. Thus, it is very important to implement tools which can assist in the quantifying the effects of workloads, so that the maximum performance of the athlete is reached. In this context, we know little about the influence of selective load periodization system (SLPS) on cardiac autonomic control and the effects on stress markers already known. Thus, the aim of this study was to investigate if the application of SLPS promoted alterations in autonomic modulation of heart rate variability (HRV), as well as same stress markers. Therefore, sixteen male basketball players (mean ± SE: age 23.3 ± 1.0 years; mass 87.5 ± 3.5 kg; height 194 2 cm) were submitted to SLPS and evaluated before and after a competition period. The HRV was evaluated by a spectral analysis of the time series composed of R-R intervals obtained in the supine position and during a tilt test. The evaluation of stress markers consisted of measuring plasma catecholamines, cortisol and free testosterone. The results demonstrated that the training load used during the competition period did not cause significant changes in the autonomic modulation of HRV. This affirmation is supported by the absence of change in oscillations of low frequency (LF: 0,04-0,15Hz), that corresponding to sympathetic and parasympathetic modulations, and high frequency (HF:0,15-05Hz), that corresponding only to parasympathetic modulations of HRV. Additionally, no changes were observed in plasma concentrations of catecholamines, free testosterone, cortisol and, consequently, in testosterone/cortisol ratio, when pre-competition and post-competition values were compared. In summary, our findings suggest that the use of SLPS in basketball athletes presented balance between workloads and recovery periods. However, further investigations are needed, including in other sports, so that we can evaluate the effects of SLPS on cardiac autonomic modulation and stress markers evaluated in this study.
Abstract: The decrease in the performance of athlete is often associated with an imbalance between workload and recovery period. Thus, it is very important to implement tools which can assist in the quantifying the effects of workloads, so that the maximum performance of the athlete is reached. In this context, we know little about the influence of selective...
Show More
-
Positive Effects of Sports Events: From Exaggeration to Reality
Keivan Shabani Moghaddam,
Saifulla Shahabzade
Issue:
Volume 3, Issue 3, May 2015
Pages:
52-56
Received:
28 April 2015
Accepted:
6 May 2015
Published:
21 May 2015
Abstract: Although sports events are considered a new field for urban and economic development, besides certain advantages that are obtained by hosting sports events, there are also many dangers. Upon considering the effects of sports events, studies on low-accuracy sports events are heavily relied on. These analyses often exaggerate advantages, underestimate costs and make an improper use of statistics. It appears that there positive effects and especially, financial advantages of sports events have often been exaggerated so that financial profits are often estimated too high, and costs are understated. By considering existing evidences and literature, this study aims to find an answer for this question: How much true are the topics propounded as to the positive effects of sports events?
Abstract: Although sports events are considered a new field for urban and economic development, besides certain advantages that are obtained by hosting sports events, there are also many dangers. Upon considering the effects of sports events, studies on low-accuracy sports events are heavily relied on. These analyses often exaggerate advantages, underestimat...
Show More
-
Considering the Occupational Prestige of Physical Education Teachers Compared with Other Jobs (Hamadan Province Case Study)
Keivan Shabani Moghaddam,
Mehdi Roozbahani,
Said Janjan,
Seifollah Shahabzade,
Aboozar Soori
Issue:
Volume 3, Issue 3, May 2015
Pages:
57-60
Received:
15 April 2015
Accepted:
29 April 2015
Published:
23 May 2015
Abstract: Physical education discipline in many countries of the world, in comparison with other academic topics, is considered as possessing lower credibility, and physical education teachers are sometimes seen by some individuals as people with an entertaining and trivial job. This study was conducted with the aim of investigating the occupational prestige of physical education teachers compared with other jobs. The study’s statistical sample consisted of 235 physical education teachers in the Hamadan Province. A realized questionnaire was employed to gather data, and the Kolmogorov-Smirnov test was used to determine normality of data distribution, and the independent-t test and the one-way ANOVA was employed to test the hypotheses. The study results showed significant difference between the mean credibility of the jobs being considered (physician, teacher, cab driver, salesman, sandwich maker, barber, physical education teacher, and governmental clerk) in the study sample with that of the population. According to respondents, job-owners such as salesmen, barbers, sandwich makers, and cab drivers had higher occupational prestige compared with physical education teachers. Finally, physical education teachers believed that they deserved higher occupational prestige. They were of the belief that physical educationteachers’ job credibility was being considered as lower than some other occupations, and they did not enjoy a social prestige and credibility equal with that of the teachers of other subjects.
Abstract: Physical education discipline in many countries of the world, in comparison with other academic topics, is considered as possessing lower credibility, and physical education teachers are sometimes seen by some individuals as people with an entertaining and trivial job. This study was conducted with the aim of investigating the occupational prestige...
Show More
-
Anthropometric Characteristic, Somatotype and Body Composition of Canadian Female Rowers
Anup Adhikari,
Edward McNeely
Issue:
Volume 3, Issue 3, May 2015
Pages:
61-66
Received:
30 April 2015
Accepted:
13 May 2015
Published:
26 May 2015
Abstract: Canadian female rowers were evaluated for their anthropometrical characteristics including somatotype and body composition to evaluate them with their international counterparts. 31 female rowers with an average age of 28.6 ±3.4 ( range 19-33) yr of different local clubs were assessed during their peak season time. Part of the measurements were done during the fulfilment of assignment for ISAK Kianthropometry accreditation course in Canada and part of the measurements were done during the fitness assessment of rowers at local clubs. Somatotype was assessed using Heath- Carter method and body composition (Fat%) was assessed by surface anthropometry. Endomorphic mesomorph (3.1±0.5 ─4.1±0.6 ─2.3±0.7 ) body type was observed in average with an average 23.4(±2.9) % body fat. Average waist-hip ratio was 0.74 (±0.4) .Canadian female rowers of the present study possessed more than average muscularity with slightly higher body fat % . The present study recommended more muscularity with less body fat % for the Canadian female rowers. The study also recommended a change in body type from endomorphic mesomorph to ectomorphic mesomoeph.
Abstract: Canadian female rowers were evaluated for their anthropometrical characteristics including somatotype and body composition to evaluate them with their international counterparts. 31 female rowers with an average age of 28.6 ±3.4 ( range 19-33) yr of different local clubs were assessed during their peak season time. Part of the measurements were don...
Show More
