scholarly journals Investigation of body weight distribution and ocular convergence in children practising table tennis

2021 ◽  
Vol 25 (4) ◽  
pp. 52-62
Author(s):  
Gabriela Juraszek
2020 ◽  
Vol 39 (1) ◽  
Author(s):  
D. Ohlendorf ◽  
K. Kerth ◽  
W. Osiander ◽  
F. Holzgreve ◽  
L. Fraeulin ◽  
...  

Abstract Background The aim of this study was to collect standard reference values of the weight and the maximum pressure distribution in healthy adults aged 18–65 years and to investigate the influence of constitutional parameters on it. Methods A total of 416 healthy subjects (208 male / 208 female) aged between 18 and 65 years (Ø 38.3 ± 14.1 years) participated in this study, conducted 2015–2019 in Heidelberg. The age-specific evaluation is based on 4 age groups (G1, 18–30 years; G2, 31–40 years; G3, 41–50 years; G4, 51–65 years). A pressure measuring plate FDM-S (Zebris/Isny/Germany) was used to collect body weight distribution and maximum pressure distribution of the right and left foot and left and right forefoot/rearfoot, respectively. Results Body weight distribution of the left (50.07%) and right (50.12%) foot was balanced. There was higher load on the rearfoot (left 54.14%; right 55.09%) than on the forefoot (left 45.49%; right 44.26%). The pressure in the rearfoot was higher than in the forefoot (rearfoot left 9.60 N/cm2, rearfoot right 9.51 N/cm2/forefoot left 8.23 N/cm2, forefoot right 8.59 N/cm2). With increasing age, the load in the left foot shifted from the rearfoot to the forefoot as well as the maximum pressure (p ≤ 0.02 and 0.03; poor effect size). With increasing BMI, the body weight shifted to the left and right rearfoot (p ≤ 0.001, poor effect size). As BMI increased, so did the maximum pressure in all areas (p ≤ 0.001 and 0.03, weak to moderate effect size). There were significant differences in weight and maximum pressure distribution in the forefoot and rearfoot in the different age groups, especially between younger (18–40 years) and older (41–65 years) subjects. Discussion Healthy individuals aged from 18 to 65 years were found to have a balanced weight distribution in an aspect ratio, with a 20% greater load of the rearfoot. Age and BMI were found to be influencing factors of the weight and maximum pressure distribution, especially between younger and elder subjects. The collected standard reference values allow comparisons with other studies and can serve as a guideline in clinical practice and scientific studies.


2013 ◽  
Vol 38 (4) ◽  
pp. 745-750 ◽  
Author(s):  
Lynsey D. Duffell ◽  
Vivek Gulati ◽  
Dominic F.L. Southgate ◽  
Alison H. McGregor

2020 ◽  
Vol 11 ◽  
Author(s):  
Juniper A. Lake ◽  
Erin M. Brannick ◽  
Michael B. Papah ◽  
Cory Lousenberg ◽  
Sandra G. Velleman ◽  
...  

1982 ◽  
Vol 9 (1) ◽  
pp. 121 ◽  
Author(s):  
IJ Skira ◽  
NP Brothers ◽  
GR Copson

Agouti rabbits constituted 84% and black rabbits 16% of the 5137 rabbits shot at Macquarie I, between 1973 and 1977. The occurrence of other coat colours was rare. There were no significant physical differences between agouti and black rabbits with respect to body weight, litter size and eye-lens weight distribution. The hypothesis that black rabbits are more robust than agouti rabbits was not substantiated.


2016 ◽  
Vol 31 ◽  
pp. 2-6 ◽  
Author(s):  
Piotr Morasiewicz ◽  
Szymon Dragan ◽  
Szymon Łukasz Dragan ◽  
Zdzisława Wrzosek ◽  
Łukasz Pawik

2003 ◽  
Vol 83 (2) ◽  
pp. 112-122 ◽  
Author(s):  
Yocheved Laufer

Abstract Background and Purpose. Standard and quad canes are often prescribed to patients with hemiparesis, yet their effect on postural control remains unclear. Thus, the objective of this study was to examine the effects of standard and quad canes on postural sway and on weight-bearing patterns in patients with hemiparesis. Subjects. Thirty subjects with a diagnosis of unilateral hemiparesis following a stroke (patient group; mean age=71.2 years, SD=7.0) and 20 age-matched, community-dwelling volunteers without hemiparesis (comparison group; mean age=72.1 years, SD=5.2) participated in the study. Methods. Postural sway and percentage of body weight (%BW) borne by each extremity were measured in 3 positions: with the heels aligned with each other (aligned position) and in staggered foot positions with either the affected or unaffected extremity placed forward (affected FW and unaffected FW positions). All subjects were tested in each position with no cane, a standard cane, and a quad cane. The order of tests was randomized, and analysis of data included use of an analysis of variance and adjusted Tukey-Kramer tests. Results. In both the aligned and unaffected FW positions, postural sway was reduced only with the quad cane. Both types of canes reduced postural sway in the affected FW position; however, the quad cane had a greater effect. An asymmetrical weight distribution between the lower extremities did not change in the patient group across positions, even with walking aids. Discussion and Conclusion. A quad cane appears to be more effective than a standard cane in decreasing postural sway in patients with moderate impairment secondary to hemiparesis during stance. The greatest effect on postural sway occurred when the assistive device was contralateral to the foot placed forward. The use of a cane does not appear to adversely affect the asymmetrical weight-bearing pattern during stance that is characteristic of patients with hemiparesis, even when balance is challenged by decreasing the base of support.


2014 ◽  
Vol 47 (7) ◽  
pp. 1603-1608 ◽  
Author(s):  
Cédrick T. Bonnet ◽  
Sarah Cherraf ◽  
Sébastien Szaffarczyk ◽  
Patrice R. Rougier

2012 ◽  
Vol 41 (4) ◽  
pp. 443-447 ◽  
Author(s):  
Rachel Seibert ◽  
Denis J. Marcellin-Little ◽  
Simon C. Roe ◽  
Venita DePuy ◽  
B. Duncan X. Lascelles

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