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Soccer Passing Accuracy Differentiates Between High and Low Digit Ratio (2D:4D) Soccer Players
Muhammad Shahidul Islam,
Brajanath Kundu
Issue:
Volume 8, Issue 3, September 2020
Pages:
49-55
Received:
20 June 2020
Accepted:
7 July 2020
Published:
17 July 2020
Abstract: The purpose of the present study was to know soccer passing accuracy performances between the national youth level soccer players possessing high digit ratio and low digit ratio (2D:4D). The study was carried out in 108 male soccer players of Bangladesh aged between 16 to 19 years for measured the digit ratio. To find out the high and low digit ratio groups of participant quartile deviation has been used. Participants belonged to 0.973 and above (N=28) were categorized into high digit ratio group and 0.942 and below (N=28) were categorized into low digit ratio group. Soccer passing accuracy performance was assessed (N=56) by using Loughborough Soccer Passing Test (LSPT). Digit ratio (2D:4D) was measured by digital vernier caliper, Mitutoyo Corporation, Japan measuring to 0.01 mm. The length of the index finger (2D) and ring finger (4D) measured in millimeters from the second metacarpophalangeal crease of the finger to the fingertip. The mean digit ratio was calculated as dividing the length of the 2D by the length of the 4D for the left and right hand one by one and then computes the mean of these two ratios. To find out the significance of differences of soccer passing accuracy between the high digit ratio and the low digit ratio groups independent t-test was used. It was observed that the mean score in soccer passing accuracy performance, i.e., LSPT Total performance (TP) of the lower digit ratio, group was a significantly better performer than that of the high digit ratio group. A higher level of fetal testosterone, characterized by lower values of the digit finger ratio (2D:4D), may be associated with a higher performance of soccer passing accuracy in multifaceted aspects including passing, dribbling, controlling, turning, decision-making, and cognition.
Abstract: The purpose of the present study was to know soccer passing accuracy performances between the national youth level soccer players possessing high digit ratio and low digit ratio (2D:4D). The study was carried out in 108 male soccer players of Bangladesh aged between 16 to 19 years for measured the digit ratio. To find out the high and low digit rat...
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Advantages of Phase Angle in Evaluating Physical Vitality Level
Katsunori Fujii,
Yuki Takeyama
Issue:
Volume 8, Issue 3, September 2020
Pages:
56-61
Received:
4 July 2020
Accepted:
20 July 2020
Published:
28 July 2020
Abstract: Phase angle (PhA) has become a sudden focus of attention in recent years. However, much remains unknown about its relationship with health indicators. If it is an indicator derived through bioelectrical impedance analysis (BIA), its meaning as a simple health indicator can probably be established. In fact, an indicator of senescence called “vital age” has been proposed. However, this vital age is derived from multivariate factors and so cannot be called a simple indicator. Accordingly, while presenting the term physical vitality as one determinant of health, we defined physical vitality in the sense of conceptualizing the body’s internal control mechanism power that governs the life force. That power regulates health, which is an indicator of the driving force (life force) of human life. In this study we compared phase angle in high school sports club members and general student controls, and showed that the height of the phase angle in club members reflects their physical vitality. An attempt was then made to position phase angle as an indicator of physical vitality. Specifically, we evaluated the phase angles of individual club members by constructing a span evaluation chart with age of phase angle and applying individual club members to that evaluation chart, with general high school students as a control group. With this ability to evaluate the phase angles of individuals, rather than showing that phase angle was high in all club members we were able to grasp the physical vitality levels of health factors possessed by each individual.
Abstract: Phase angle (PhA) has become a sudden focus of attention in recent years. However, much remains unknown about its relationship with health indicators. If it is an indicator derived through bioelectrical impedance analysis (BIA), its meaning as a simple health indicator can probably be established. In fact, an indicator of senescence called “vital a...
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Analysis of Aerobic Power and Swing Characteristics in Young Male Race Walkers
Dibendu Kumar Bej,
Brajanath Kundu
Issue:
Volume 8, Issue 3, September 2020
Pages:
62-67
Received:
9 July 2020
Accepted:
22 July 2020
Published:
10 August 2020
Abstract: Economical walking is defined by the steady state of oxygen consumption with top speed and technique in competition is one of the most important factors to achieve higher performance for Pedestrians. The technique of race walking which is defined by World Athletics race walking competitions rules 230.54.2 not a naturally obtained human skill as normal walking and running of childhood. The purpose of the study was to analyze the association and relation of race velocity with aerobic capacity and kinematic properties. Top 10 race walkers of 10000m race walk discipline (Men- U 20), from 33rd National Junior Athletic Championships, Nov, 2017 held at Acharya Nagarjuna University, Vijaywada, A. P. India were digitized as the subject. For kinematic analysis, athletes were recorded as they passed through halfway 4.55 KM at back straight on the 400 m track by using two standard digital HD camcorders (Nikon B700, 60Hz) mounted on rigid tripods 90° angle 4 m away from the track inside & outside where reference volume was 5 m long and 1.5 m high. Whereas to measure Vo2 Max athletes’ performance were taken as they passed through 1.5 miles or 2414.02 m on the track. The video data were analyzed by using motion analysis software (KINOVEA). Descriptive statistics and Pearson Product Moment Correlation coefficient (p<0.05) were employed for statistical calculation. The tabulation of data was done by using the IBM SPSS software. The result of the study showed that the correlation between race performance and VO2 max was quite high, r (8df) = 0.726. A Strong relationship was found between step length and RW performance, i.e. r (8df) = 0.689. Whereas variables like, flight time, linearity, maximum knee and foot height of swing leg were positively correlated with the walking performance. A high degree positive association was located in the torso and pelvic displacement r = 0.768 & 0.804 respectively. In toe off phase “r” value of knee angle with performance was 0.742 that showed a high degree coefficient of correlation. Whereas at heel contact and mid stance phase a low degree negative correlation found (r = -0.489& -0.406). Most of the calculated “r” values were significant as the critical value of 8 df at 0.05 level is 0.631. Due to the direct association of race walking velocity (Mean = 3.427 m/s & SD = 0.235) with VO2 max, step length, knee angle, torso & pelvic displacement may be this type of result found indifferent phases. Race walking performance was positively associated with the race walking economy (kinematic and physiologic variables), which implies that the fastest race walkers were more economical than the lesser performers. In relation to RW technique and forward propulsion, displacement of torso and pelvic region observed a significant role.
Abstract: Economical walking is defined by the steady state of oxygen consumption with top speed and technique in competition is one of the most important factors to achieve higher performance for Pedestrians. The technique of race walking which is defined by World Athletics race walking competitions rules 230.54.2 not a naturally obtained human skill as nor...
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Arthroscopic Primary Repair of the Anterior Cruciate Ligament: A Literature Review
Salim Al Rawahi,
Humaid Al Farii,
Sultan Al Maskari
Issue:
Volume 8, Issue 3, September 2020
Pages:
68-72
Received:
4 July 2020
Accepted:
21 July 2020
Published:
17 August 2020
Abstract: Introduction: Anterior cruciate ligament (ACL) is an important mechanical stabilizer of the knee joint and ACL injuries are commonly seen among athletes. The gold-standard treatment adopted worldwide for ACL injuries is arthroscopic ACL reconstruction. However, arthroscopic primary ACL repair has gained popularity recently. The aim of this review is to provide an overall update of the studies that looked at arthroscopic primary ACL repair. Methods: Electronic databases were searched for relevant studies linked to arthroscopic primary ACL repair. We excluded any nonsurgical treatment studies, cadaveric studies and review articles. Nine hundred ninety-five articles were identified for screening, and a total of 523 patients from 8 articles were included for the review. Results: The study included articles published between 1985 and 2019: 66.6% were male, median age was 27 years; and 97.7% had sport related injuries. Two-hundred and nineteen patients had acute arthroscopic primary repair with varying types of ACL fixation; 287 of them had concomitant injuries. Rehabilitation program varies from a study to another; average evaluation for return to sport was 6 months. Eleven cases of the primary ACL repair have failed. Overall, patients reported satisfactory to good results. Conclusion: Arthroscopic primary ACL repair is a promising procedure with advantages over ACL reconstruction. However, appropriate patients’ selection, surgical expertise and instrumentations, pre- and post-op rehabilitation programs are all contributing factors to successful outcomes.
Abstract: Introduction: Anterior cruciate ligament (ACL) is an important mechanical stabilizer of the knee joint and ACL injuries are commonly seen among athletes. The gold-standard treatment adopted worldwide for ACL injuries is arthroscopic ACL reconstruction. However, arthroscopic primary ACL repair has gained popularity recently. The aim of this review i...
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Regular Physical Exercise for Prevention and Treatment of Low Back Pain: A Systematic Review
Issue:
Volume 8, Issue 3, September 2020
Pages:
73-80
Received:
10 August 2020
Accepted:
20 August 2020
Published:
17 September 2020
Abstract: Introduction: Low back pain is one among the main health problems during life time with a high prevalence, which causes functional loss and reduced productivity. Low back pain specifically affects the lumbar region of the spine. The pain is usually related with mostly muscle tension, and often limits our range of movement. Low back pain (LBP) is a common problem involving the muscles, nerves, and bones of the back. Objective: The purposes of this review study are to describe about low back pain and to examine the most recommended exercise for prevention and management of low back pain, to review scientific evidence on the effect of physical exercise on low back pain and to review the risk factors which lead to develop low back pain. Methods: The review of related literature search strategy were used the terms in relation with LBP and exercise, exercise prescription for LBP, exercise testing for LBP, recommended exercise for LBP, the effect of exercise on back pain and etc. A search was conducted in the following databases: online research databases, web of knowledge, and science direct, sport discus, Google scholar and from other relevant citations. Results: Based on LBP analysis and outcome functions, can be categorized as acute (<6 wk), sub-acute (6-12 wk), and chronic. Risk factors associated with low-back pain include age greater than 34 years, degenerative diseases such as arthritis or osteoporosis, a family or personal history of back pain or trauma, a sedentary lifestyle, low job satisfaction, and low socioeconomic status, excess body weight, psychological stress or depression and physically hard work. Common symptoms of LBP: pain that is dull or achy, contained to the low back, stinging, burning pain that moves from the low back to the backs of the thighs, sometimes into the lower legs or feet, muscle spasms and tightness in the low back, pelvis, and hips, pain that worsens after prolonged sitting or standing, difficulty standing up straight, walking, or going from standing to sitting and pain that worsens with bending, lifting, standing or walking. Regular exercise particularly endurance and stretching exercises such as walking, biking, and swimming, has the good evidence of efficacy among exercise regimen, whether for whom with acute, sub-acute, or chronic low back pain. Generally, to reduce and manage LBP following low-impact endurance, strength and stretching regular exercises are advised.
Abstract: Introduction: Low back pain is one among the main health problems during life time with a high prevalence, which causes functional loss and reduced productivity. Low back pain specifically affects the lumbar region of the spine. The pain is usually related with mostly muscle tension, and often limits our range of movement. Low back pain (LBP) is a...
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