, with advancing age there is also increasing impairment of many aspects of vision ( Ball, Beard, Roenker, Miller, & Griggs, 1988 ; Elliott, Whitaker, & MacVeigh, 1990 ; Klein, Klein, Linton, & De Mets, 1991 ; Kosnik, Winslow, Kline, Rasinski, & Sekuler, 1988 ; Leat et al., 2013 ). Many of these
Mohammed M. Althomali and Susan J. Leat
Christina D. Davlin, William A. Sands and Barry B. Shultz
During a back tuck somersault, the angular velocity of the head is thought to surpass the visual system's ability to maintain a distinct and continuous picture of the environment. The primary objectives of this research were to determine if differences existed with regard to trunk and lower body kinematics, as well as landing balance, when gymnasts perform back tuck somersaults under different vision conditions. Ten female gymnasts (age = 11.6 ± 2.67 years, competitive level = 8 ± 1.15, and training time in gymnastics = 5.9 ± 1.63 years) performed back tuck somersaults under 4 vision conditions while wearing electromagnetic sensors that allowed automatic digitizing. Although no significant differences were found between vision conditions with regard to timing, joint angles, and joint angular velocities, gymnasts were more stable at landing under conditions that allowed vision during either the entire somersault or the last half of me somersault.
Daniela Corbetta, Rebecca F. Wiener, Sabrina L. Thurman and Emalie McMahon
subsequent development are primarily guided by vision. This is still a widely-accepted interpretation, one that continues to be heralded in motor development textbooks despite discoveries in the past 25 years increasingly pointing toward a different process explanation of how infants are learning to reach
Theresa L. Miyashita and Paul A. Ullucci
abnormalities, 15 decreased visual accuracy, 12 , 16 and difficulty maintaining visual attention. 14 , 16 Common concussion symptoms associated with vestibulo-ocular system dysfunction include headache, dizziness, sore eyes, blurred vision, difficulty reading, and words appearing out of focus. 11 , 15 The
Yuko Kuramatsu, Yuji Yamamoto and Shin-Ichi Izumi
into a controllable system ( Bernstein, 1996 ). In particular, individuals with hemiparesis are reportedly heavily reliant on visual inputs ( Marigold & Eng, 2006 ). A whole-body movement task can be constrained by restricting the vision of poststroke individuals with hemiparesis, who then have to
Diane L. Gill
As the new Editor of the “new” Women in Sport and Physical Activity Journal (WSPAJ), and someone who has been a reviewer, editorial member, author and reader since WSPAJ began publishing in 1992, I offer my historical perspective and my vision for WSPAJ. First, I am honored to be entrusted with the editorship as WSPAJ moves into its new home at UNCG, and I am committed to ensuring that WSPAJ is the leading publication for scholarship on women’s sport and physical activity. My vision for WSPAJ stems from its roots, and thus, I begin this editorial with an overview of the history of WSPAJ. Then, I will outline our mission and vision for WSPAJ. Finally, I invite all who are committed to women’s sport and physical activity to join our WSPAJ team.
Frederik Ehlen, Jess C. Dixon and Todd M. Loughead
importance of vision and values as being fundamental to the nature of strategic leadership and in setting an organization’s sense of direction. Additionally, the interview highlights the importance of strategic planning to create corporate value. Interviewer: How did you become the CEO of MLSE? Peddie: It
Rafael L. Kons, Kai Krabben, David L. Mann, Gabriela Fischer and Daniele Detanico
Judo for athletes with vision impairment (VI judo) is a Paralympic sport that follows the same rules as Olympic judo but with one main exception, as the match is initiated with athletes positioning their grips on the opponents’ jacket ( judogi ; International Paralympic Committee, 2018 ). This
Matthieu M. de Wit, Rich S.W. Masters and John van der Kamp
Based upon evidence that vision for action has quicker access to visual information than vision for perception, we hypothesized that the two systems may have differentiated visual thresholds. There is also evidence that, unlike vision for perception, vision for action is insensitive to cognitive dual-task interference. Using visual masking, we determined the visual thresholds of 15 participants in a perception task, an action task and an action plus concurrent cognitive secondary task. There was no difference in threshold between the perception task and the action task, but the action plus concurrent secondary task was accompanied by a greater visual threshold than both the perception task and the action task alone, indicating dual-task interference. The action task was thus most likely informed by vision for perception. The implications of these results are reviewed in the context of recent discussions of the two visual systems model.
David Antonio Gonzalez, Stefan Kegel, Tadao Ishikura and Tim Lee
Low-skill golfers coordinate the movements of their head and putter with an allocentric, isodirectional coupling, which is opposite to the allocentric, antidirectional coordination pattern used by experts (Lee, Ishikura, Kegel, Gonzalez, & Passmore, 2008). The present study investigated the effects of four vision conditions (full vision, no vision, target focus, and ball focus) on head-putter coupling in low-skill golfers. Performance in the absence of vision resulted in a level of high isodirectional coupling that was similar to the full vision condition. However, when instructed to focus on the target during the putt, or focus on the ball through a restricted viewing angle, low-skill golfers significantly decoupled the head—putter coordination pattern.. However, outcome measures demonstrated that target focus resulted in poorer performance compared with the other visual conditions, thereby providing overall support for use of a ball focus strategy to enhance coordination and outcome performance. Focus of attention and reduced visual tracking were hypothesized as potential reasons for the decoupling.