scholarly journals Commentaries on Omphile and his Soccer Ball: Colonialism, Methodology, Translanguaging Research

2019 ◽  
Vol 5 (2) ◽  
pp. 20
Author(s):  
Amfo Nana Aba Appiah ◽  
Carneiro Alan ◽  
Kulick Don ◽  
Heugh Kathleen ◽  
Mendezes de Souza T Lynn Mario ◽  
...  
Keyword(s):  
Soccer Ball

Commentary on “Omphile and his soccer ball: colonialism, methodology, translanguaging research”

How to throw a soccer ball

Nature ◽  
2006 ◽  
Author(s):  
Philip Ball
Keyword(s):  
Soccer Ball

Three dimensional numerical study of soccer ball aerodynamics at different spin conditions

2021 ◽  
Author(s):  
Shah Wasif Sazzad ◽  
Tasnia Noboni ◽  
Saad Rahman ◽  
Mohammad Mamun
Keyword(s):  
Numerical Study ◽  
Three Dimensional ◽  
Soccer Ball

On Smart Soccer Ball as a Head Impact Sensor

2019 ◽  
Vol 68 (8) ◽  
pp. 2979-2987 ◽  
Author(s):  
Theodore Stone ◽  
Nathaniel Stone ◽  
Nirupam Roy ◽  
William Melton ◽  
J. Benjamin Jackson ◽  
...  
Keyword(s):  
Head Impact ◽  
Soccer Ball

scholarly journals Biomechanics of Heading a Soccer Ball: Implications for Player Safety

2001 ◽  
Vol 1 ◽  
pp. 281-322 ◽  
Author(s):  
Charles F. Babbs
Keyword(s):  
Body Mass ◽  
Motor Vehicle ◽  
Motor Vehicle Crash ◽  
Inflation Pressure ◽  
Soccer Ball ◽  
Head Nodding ◽  
Key Characteristics ◽  
Age Appropriate ◽  
Close Range ◽  
Reduce Risk

To better understand the risk and safety of heading a soccer ball, the author created a set of simple mathematical models based upon Newton�s second law of motion to describe the physics of heading. These models describe the player, the ball, the flight of the ball before impact, the motion of the head and ball during impact, and the effects of all of these upon the intensity and the duration of acceleration of the head. The calculated head accelerations were compared to those during presumably safe daily activities of jumping, dancing, and head nodding and also were related to established criteria for serious head injury from the motor vehicle crash literature. The results suggest heading is usually safe but occasionally dangerous, depending on key characteristics of both the player and the ball. Safety is greatly improved when players head the ball with greater effective body mass, which is determined by a player�s size, strength, and technique. Smaller youth players, because of their lesser body mass, are more at risk of potentially dangerous headers than are adults, even when using current youth size balls. Lower ball inflation pressure reduces risk of dangerous head accelerations. Lower pressure balls also have greater “touch” and “playability”, measured in terms of contact time and contact area between foot and ball during a kick. Focus on teaching proper technique, the re-design of age-appropriate balls for young players with reduced weight and inflation pressure, and avoidance of head contact with fast, rising balls kicked at close range can substantially reduce risk of subtle brain injury in players who head soccer balls.

A Study of Knuckling Effect of Soccer Ball (P106)

2008 ◽  
pp. 555-562 ◽  
Author(s):  
Takeshi Asai ◽  
Kazuya Seo ◽  
Yousuke Sakurai ◽  
Shinichiro Ito ◽  
Sekiya Koike ◽  
...  
Keyword(s):  
Soccer Ball

A Study on Wake Structure of Soccer Ball

2007 ◽  
Author(s):  
T Asai ◽  
O Kobayashi ◽  
K Seo ◽  
R Sakashita
Keyword(s):  
Wake Structure ◽  
Soccer Ball
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