Comparison of Anthropometry and Lower Limb Power Qualities According to Different Levels and Ranking Position of Competitive Surfers

2017 ◽  
Vol 31 (8) ◽  
pp. 2231-2237 ◽  
Author(s):  
Iosu Fernandez-Gamboa ◽  
Javier Yanci ◽  
Cristina Granados ◽  
Jesus Camara
Keyword(s):  
Lower Limb ◽  
Different Levels ◽  
Ranking Position

scholarly journals Functional testing of elderly subjects after lower limb amputation

2001 ◽  
Vol 25 (2) ◽  
pp. 102-107 ◽  
Author(s):  
H. Burger ◽  
Č. Marinček
Keyword(s):  
Lower Limb ◽  
Test Battery ◽  
Lower Limb Amputation ◽  
Limb Amputation ◽  
Elderly Subjects ◽  
Functional Testing ◽  
Functional Tests ◽  
Almost All ◽  
Different Levels ◽  
Sedentary Subjects

The aim of the present study was to find out if it is possible to use the same functional tests for elderly subjects after lower limb amputation who live independently at their homes as for healthy ones. Will these tests discriminate among different problems in subjects with different levels and different causes of amputation and will they discriminate between active and sedentary subjects?The study examined 83 volunteers who lived independently at their homes (55 healthy sedentary, 17 after trans-tibial amputation, 11 after trans-femoral amputation). All subjects were aged 60 or older.All subjects after lower limb amputation were found to have significantly worse results in almost all tests in comparison with the healthy sedentary men. The subjects after trans-femoral amputation needed significantly more time at the “up and go” test, walked a shorter distance in 9 minutes, and performed fewer stand-ups from a chair and fewer steps in two minutes than the subjects after trans-tibial amputation. The active subjects after lower limb amputation had better balance, were quicker at the “up and go” test and walked longer in a minute than the sedentary subjects after lower limb amputation.It can be concluded that this test battery can also be used to test subjects after lower limb amputation because it discriminates among different severity of problems in subjects with different level and cause of amputation as well as between active and sedentary ones.

Adapting Locomotion to Different Surface Compliances: Neuromuscular Responses and Changes in Movement Dynamics

2005 ◽  
Vol 94 (3) ◽  
pp. 1733-1750 ◽  
Author(s):  
Daniel S. Marigold ◽  
Aftab E. Patla
Keyword(s):  
Lower Limb ◽  
Center Of Mass ◽  
Trunk Muscles ◽  
Whole Body ◽  
Response Modulation ◽  
Compliant Surface ◽  
Random Fashion ◽  
Neuromuscular Responses ◽  
Recovery Response ◽  
Different Levels

Knowledge of how the nervous system deals with surfaces with different physical properties such as compliance that challenge balance during locomotion is of importance as we are constantly faced with these situations every day. The purpose of this study was to examine the control of center of mass (COM) and lower limb dynamics and recovery response modulation of muscle activity during locomotion across an unexpected compliant surface and in particular, scaling behavior across different levels of compliance. Eight young adults walked along a walkway and stepped on an unexpected compliant surface in the middle of the travel path. There were three different levels of surface compliance, and participants experienced either no compliant surface or one of the three compliant surfaces during each trial that were presented in a blocked or random fashion. Whole body kinematics were collected along with surface electromyography (EMG) of selected bilateral lower limb and trunk muscles. The recovery response to the first compliant-surface trial demonstrated muscle onset latencies between 97 and 175 ms, and activity was modulated while on the compliant surface. Vertical COM trajectory was not preserved after contact with the compliant surface: peak vertical COM, while on the compliant surface was lower than when on stable ground. Perturbed-limb knee flexion after toe-off increased with increased surface compliance, which enabled toe clearance with the ground to be similar to control trials. The results suggest that stepping off of a compliant surface is actively modulated by the CNS and is geared toward maintaining dynamic stability.

Incidence of lower limb amputation in Australian hospitals from 2000 to 2010

2013 ◽  
Vol 38 (2) ◽  
pp. 122-132 ◽  
Author(s):  
Michael P Dillon ◽  
Friedbert Kohler ◽  
Victoria Peeva
Keyword(s):  
Lower Limb ◽  
Clinical Relevance ◽  
Contemporary Literature ◽  
Lower Limb Amputation ◽  
Limb Amputation ◽  
National Hospital ◽  
Hospital Morbidity ◽  
Partial Foot Amputation ◽  
Different Levels ◽  
Over Time

Background: Contemporary literature reports that the incidence of lower limb amputation has declined in many countries. This impression may be misleading given that many publications only describe the incidence of lower limb amputations above the ankle and fail to include lower limb amputations below the ankle. Objectives: To describe trends in the incidence of different levels of lower limb amputation in Australian hospitals over a 10-year period. Study design: Descriptive. Method: Data describing the age-standardised incidence of lower limb amputation were calculated from the Australian National Hospital Morbidity database and analysed for trends over a 10-year period. Results: The age-standardised incidence of lower limb amputation remained unchanged over time ( p = 0.786). A significant increase in the incidence of partial foot amputations ( p = 0.001) and a decline in the incidence of transfemoral ( p = 0.00) and transtibial amputations ( p = 0.00) were observed. There are now three lower limb amputations below the ankle for every lower limb amputation above the ankle. Conclusion: While the age-standardised incidence of all lower limb amputation has not changed, a shift in the proportion of lower limb amputations above the ankle and lower limb amputations below the ankle may be the result of improved management of precursor disease that makes partial foot amputation a more commonly utilised alternative to lower limb amputations above the ankle. Clinical relevance This article highlights that although the incidence of lower limb amputation has remained steady, the proportion of amputations above the ankle and below the ankle has changed dramatically over the last decade. This has implications for how we judge the success of efforts to reduce the incidence of lower limb amputation and the services required to meet the increasing proportion of persons with amputation below the ankle.

scholarly journals Measurement of maximal end-weight-bearing in lower limb amputees

1982 ◽  
Vol 6 (3) ◽  
pp. 147-151 ◽  
Author(s):  
B. M. Persson ◽  
E. Liedberg
Keyword(s):  
Body Weight ◽  
Contact Surface ◽  
Lower Limb ◽  
Weight Bearing ◽  
Phantom Pain ◽  
Stump Pain ◽  
Simplified Method ◽  
Sensitivity To Pain ◽  
Different Levels ◽  
Lower Limb Amputees

Modern sockets for lower limb amputees utilize total contact and distribute some weight on the stump end. Its tolerance to bear weight varies but is better after joint disarticulation, however, systematic measures have been missing. Different levels, indications, shapes etc. were analysed with 102 measurements in 69 patients. The maximal-end-weight-bearing of the stump measured on a scale was much lower after transmedullar amputations than after disarticulations. Men had a mean tolerance more than 15 kg but women less than 10 kg. There was a positive correlation to body weight. Diabetics tolerated significantly more end-bearing and patients with phantom pain more than patients with stump pain. Within each category of stumps the range of maximal end-weight-bearing was large. Among all below-knee amputees the tolerance was between 2 to 55 kg or 3 to 79 per cent of body weight. Pointed stumps statistically tolerated about as much as rounded ones and the variability of contact surface was not measured as its sensitivity to pain must be unevenly distributed. It is concluded that this simplified method is helpful to analyse pain and to modify end-weight-bearing more individually.

Dependence of Intergranular Fracture on Boundary Topography and Cohesion

1973 ◽  
Vol 31 ◽  
pp. 150-151
Author(s):  
J. E. Doherty ◽  
A. F. Giamei ◽  
B. H. Kear ◽  
C. W. Steinke
Keyword(s):  
Grain Boundary ◽  
Room Temperature ◽  
Nickel Base Superalloy ◽  
Boundary Shear ◽  
Room Temperature Ductility ◽  
Solid Solution Matrix ◽  
Nickel Base ◽  
Solution Matrix ◽  
Different Levels ◽  
Base Superalloy

Recently we have been investigating a class of nickel-base superalloys which possess substantial room temperature ductility. This improvement in ductility is directly related to improvements in grain boundary strength due to increased boundary cohesion through control of detrimental impurities and improved boundary shear strength by controlled grain boundary micros true tures.For these investigations an experimental nickel-base superalloy was doped with different levels of sulphur impurity. The micros tructure after a heat treatment of 1360°C for 2 hr, 1200°C for 16 hr consists of coherent precipitates of γ’ Ni3(Al,X) in a nickel solid solution matrix.

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