scholarly journals Effect of different forefoot rocker radii on lower-limb joint biomechanics in healthy individuals

2021 ◽  
Vol 86 ◽  
pp. 150-156
Author(s):  
L. van Kouwenhove ◽  
G.J. Verkerke ◽  
K. Postema ◽  
R. Dekker ◽  
J.M. Hijmans
Keyword(s):  
Lower Limb ◽  
Healthy Individuals ◽  
Joint Biomechanics

Effect of Different Placement of Heel Rockers on Lower-Limb Joint Biomechanics in Healthy Individuals

2018 ◽  
Vol 108 (3) ◽  
pp. 231-235 ◽  
Author(s):  
Maedeh Farzadi ◽  
Zahra Safaeepour ◽  
Hoda Nabavi ◽  
Masumeh Bagherzadeh Cham ◽  
Mohammad Ebrahim Mousavi
Keyword(s):  
Range Of Motion ◽  
Lower Limb ◽  
Lower Limbs ◽  
Medial Malleolus ◽  
Initial Contact ◽  
Healthy Individuals ◽  
Peak Knee ◽  
Joint Biomechanics ◽  
Single Limb Support ◽  
Rocker Shoes

Background: Rocker shoes are commonly prescribed to healthy and pathologic populations to decrease stress on the lower limbs. An optimal rocker shoe design must consider both toe and heel rockers. Heel rockers are as effective as toe rockers in relieving foot plantar pressures. However, most studies have focused on the position of toe rockers. The aim of this study was to assess the effect of different heel rocker apex placements on lower-limb kinetics and kinematics. Methods: Eighteen healthy females participated in this study. Three pairs of rocker shoes with rocker apex positions anterior to the medial malleolus (shoe A), at the medial malleolus (shoe B), and posterior to the medial malleolus (shoe C) were fabricated and then compared with a flat shoe (shoe D). Kinetic and kinematic data were collected, and lower-extremity joint ranges of motion and moments were calculated. Results: Ankle range of motion was increased by shoe C (P = .04) during initial contact and by shoe A (P = .02) during single-limb support. Peak knee moment was significantly larger for shoes A and B (P < .05) during single-limb support. Conclusions: Results showed that forward and backward shifting of the heel rocker apex could change the knee moment and ankle joint range of motion in the stance phase of gait. Therefore, placement of the heel rocker in a rocker-bottom shoe can be manipulated to promote the desired lower-limb motion, at least in healthy individuals.

scholarly journals Effect of corvitin on oxygen homeostasis and blood gas transmitters in ischemia-reperfusion of the lower limbs

2021 ◽  
Vol 20 (2) ◽  
pp. 37-44
Author(s):  
V. N. Zasimovich ◽  
V. V. Zinchuk ◽  
N. N. Ioskevich
Keyword(s):  
Lower Limb ◽  
Ischemia Reperfusion ◽  
Venous Blood ◽  
Nitrogen Monoxide ◽  
Early Postoperative Period ◽  
Lower Limbs ◽  
Healthy Individuals ◽  
Oxygen Homeostasis ◽  
Group I ◽  
Male Patients

Introduction. Reperfusion-reoxygenation syndrome (RRS) after revascularization of the lower limbs in obliterating atherosclerosis of the arteries is accompanied by a violation of the oxygen transport function of the blood (OTFB) and the content of gas transmitters (GTs). Reperfusion injury affects not only the tissues of the lower limbs, but also of anatomically distant organs, which supposes that effective RRS correction is required. Aim. To study the effect of Corvitin on the OTFB parameters and the content of GT of nitrogen monoxide (NO) and hydrogen sulfide (H2S) in the venous blood of the forearm after revascularization of the lower limb in chronic atherosclerotic occlusion of the superficial femoral artery (SFA). Materials and methods. The study included 118 male patients. Revascularization of the lower limb was carried out by the method of loop endaterectomy from the SFA. Patients of group I (n=52) received traditional medication, 51 patients of group II additionally received Corvitin. In the blood from the vein of the elbow bend before the operation, on the 3rd and 8th days after it, the indices of OTFB and GTs were determined. Results. In group I, on the 3rd day after surgery, pO2 increased in relation to healthy individuals by 5.2–18.5%, while pCO2 decreased by 4.8–6.7%, depending on the stage of initial ischemia. The concentrations of NO and H2S increased by 9.2–50.1% and 9.2–21.1%, respectively. The increase in the parameters of hyperoxemia, hypocapnemia and GT after the return of blood circulation decreases with the use of Corvitin (p˂0.05). By the end of the early postoperative period, the indicators of OTFB and GT not only return to their initial values, but also do not significantly differ from the group of healthy individuals (p˃0.05). Conclusion. The use of Corvitin effectively corrects violations of OTFB and GT during ischemia-reperfusion of the lower limbs, which prevents tissue reperfusion damage.

Kinesio taping effect on quadriceps strength and lower limb function of healthy individuals: A blinded, controlled, randomized, clinical trial

2016 ◽  
Vol 18 ◽  
pp. 27-31 ◽  
Author(s):  
Julio Fernandes de Jesus ◽  
Aline de Almeida Novello ◽  
Gustavo Bezerra Nakaoka ◽  
Amir Curcio dos Reis ◽  
Thiago Yukio Fukuda ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
Lower Limb ◽  
Quadriceps Strength ◽  
Healthy Individuals ◽  
Limb Function ◽  
Kinesio Taping ◽  
Lower Limb Function

scholarly journals Mental Practice for Relearning Locomotor Skills

2010 ◽  
Vol 90 (2) ◽  
pp. 240-251 ◽  
Author(s):  
Francine Malouin ◽  
Carol L. Richards
Keyword(s):  
Motor Imagery ◽  
Lower Limb ◽  
Clinical Work ◽  
Mental Practice ◽  
Limb Amputation ◽  
Imagery Ability ◽  
Healthy Individuals ◽  
Body Movements ◽  
Behavioral Studies ◽  
Cord Injury

Over the past 2 decades, much work has been carried out on the use of mental practice through motor imagery for optimizing the retraining of motor function in people with physical disabilities. Although much of the clinical work with mental practice has focused on the retraining of upper-extremity tasks, this article reviews the evidence supporting the potential of motor imagery for retraining gait and tasks involving coordinated lower-limb and body movements. First, motor imagery and mental practice are defined, and evidence from physiological and behavioral studies in healthy individuals supporting the capacity to imagine walking activities through motor imagery is examined. Then the effects of stroke, spinal cord injury, lower-limb amputation, and immobilization on motor imagery ability are discussed. Evidence of brain reorganization in healthy individuals following motor imagery training of dancing and of a foot movement sequence is reviewed, and the effects of mental practice on gait and other tasks involving coordinated lower-limb and body movements in people with stroke and in people with Parkinson disease are examined. Lastly, questions pertaining to clinical assessment of motor imagery ability and training strategies are discussed.

scholarly journals MICROBIAL COMPOSITION OF VARIOUS SURFACES OF SKIN DURING DEVELOPMENT OF ATOPIC DERMATITIS BASED ON DATA FROM MALDI-TOF MASS-SPECTROMETRY IDENTIFICATION METHOD

2016 ◽  
pp. 30-36
Author(s):  
Yu. A. Tyurin ◽  
R. S. Fassakhov ◽  
T. V. Grigorieva ◽  
I. G. Mustafin
Keyword(s):  
Mass Spectrometry ◽  
Atopic Dermatitis ◽  
Lower Limb ◽  
High Frequency ◽  
Frequency Of Occurrence ◽  
Healthy Individuals ◽  
Microbial Composition ◽  
Maldi Tof Mass Spectrometry ◽  
Maldi Tof ◽  
Mass Spectrometry Identification

Aim. Study transformation of skin microflora during development of atopic dermatitis. Materials and methods. 45 patients with various forms of atopic dermatitis (AtD) were examined. Control group consisted of 26 healthy individuals. The strains were cultivated on elective nutrient media. Identification of the isolated strains was carried out by MALDI-TOF mass-spectrometry method. Results. A low frequency of occurrence of taxon Staphylococcus epidermidis on face skin and high frequency of occurrence of Staphylococcus aureus on upper and lower limb skin was established for AtD patients compared with healthy individuals. The frequency of occurrence of proteolytically active isolates of S. aureus in AtD patients was 3 times higher than in healthy carriers of this taxon. Taxons of microorganisms not inherent to healthy individuals such as Bacillus mycoides, Pseudomonas putida, Pseudomonas radiobacter were isolated on lower limb and neck skin of AtD patients. A high frequency of occurrence of Cryptococcus satoi, Candida albicans, Malassezia globosa fungi was noted. Conclusion. A decrease of barrier functions of skin during AtD facilitates contamination of patients’ skin with rare bacterial taxons and fungi. One of the possible mechanisms of suppression of immune competent cell functions could be proteolytic enzymes of S. aureus.

scholarly journals Effect of walking on sand on co-Contraction of the lower limb muscles in individuals with overpronated foot

2021 ◽  
Vol 43 (1) ◽  
pp. 152-159
Author(s):  
Amir Fatollahi ◽  
AmirAli Jafarnezhadgero ◽  
Nasrin Amirzade
Keyword(s):  
Lower Limb ◽  
Healthy Individuals ◽  
Kinetic Chain ◽  
Lower Limb Injuries ◽  
Lower Limb Muscles ◽  
Limb Injuries ◽  
Limb Muscles ◽  
Foot Pronation ◽  
Open Kinetic Chain ◽  
Positive Effect

Background: Foot pronation is in the open kinetic chain composed of eversion, abduction, and ankle dorsiflexion. Foot overpronation may be associated with different lower limb injuries. The purpose of this study was to investigate the effect of walking on the sand on co-Contraction of the lower limb muscles in individuals with overpronated foot. Methods: The present study was a semi-experimental and laboratory type. Thirty healthy individuals and 30 individuals with foot overpronation volunteered to participate in this study. Muscle activity was recorded by an 8-channel electromyography system with a surface electrode during walking on sand. Two-way ANOVA test was used for statistical analysis at the significant level P<0/05. Results: The results demonstrated lower ankle-directed co-Contraction during walking on sand compared with walking on level ground (P<0/001). Other components of ankle-directed co-Contraction did not demonstrate any significant differences between walking on sand compared with walking on level ground (P>0/05). Conclusion: Individuals with overpronated foot demonstrated lower ankle-directed co-Contraction during walking on sand compared with walking on stable level ground. Individuals with overpronated foot showed a greater ankle-directed co-Contraction than the healthy group. Decreased ankle-directed co-Contraction indicated a positive effect of walking on sand in individuals with foot overpronation.

Sign in / Sign up

Export Citation Format

Share Document