scholarly journals Influence of Arch-Support Orthoses with Heel Lift Manipulation on Joint Moments and Forefoot Mechanics in Running

2021 ◽  
Vol 11 (4) ◽  
pp. 1613
Author(s):  
Jun-Xiang Pan ◽  
Wing-Kai Lam ◽  
Peter Lung-Wai Sze ◽  
Mohammad Farhan Tan ◽  
Aaron Kam-Lun Leung
Keyword(s):  
Repeated Measures ◽  
Loading Rate ◽  
Sagittal Plane ◽  
Joint Mechanics ◽  
Skin Marker ◽  
Peak Knee ◽  
Significant Difference ◽  
Arch Support ◽  
And Control ◽  
Heel Lift

While foot orthosis is suggested to improve rearfoot motion in running, little information is known about forefoot biomechanics. The objective of this study was to examine the effects of arch-support orthoses with various heel lift manipulation on the loading rate, spatiotemporal, and forefoot joint mechanics using a skin marker set model. Fifteen male habitual rearfoot strikers ran at their selected speeds on an instrumented treadmill in four foot orthoses conditions: flat-control, D2 (2 mm heel lift, arch-support), D6 (6 mm heel lift, arch-support), and D10 (10 mm heel lift, arch-support). A repeated measures ANOVA was performed to examine any significant difference in each of the tested variables, with α = 0.05. Wearing D10 led to smaller maximum loading rate than D2 (p < 0.001) and control (p = 0.002). For sagittal plane, D10 had larger rearfoot touchdown dorsiflexion than D2 (p = 0.027) and control (p = 0.007) and larger in D6 than control (p = 0.025). For frontal plane, wearing D10 demonstrated larger rearfoot frontal RoM than D2 (p = 0.018) and peak forefoot eversion than D6 (p = 0.047) and control (p = 0.048). Furthermore, the forefoot frontal range of motion was lowest when wearing D6. For joint moment, wearing control orthosis exhibited larger peak rearfoot eversion moment than D6 (p = 0.035), but smaller peak knee extension moment than D2 (p = 0.025) and D10 (p = 0.010). These findings indicate that the use of arch-support orthoses would alter the running mechanics that are related to injury potential. Lower heel lift orthoses led to alternations to most of the biomechanical variables than higher heel lift orthoses. Further longitudinal study seems necessary to optimize arch-support orthoses design in running.

scholarly journals Controlled trial to compare the Achilles tendon load during running in flatfeet participants using a customized arch support orthoses vs an orthotic heel lift

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Kawin K. W. Lee ◽  
Samuel K. K. Ling ◽  
Patrick S. H. Yung
Keyword(s):  
Achilles Tendon ◽  
Loading Rate ◽  
Controlled Trial ◽  
Treatment Options ◽  
Achilles Tendinopathy ◽  
Foot Orthoses ◽  
Significant Difference ◽  
Arch Support ◽  
Motion Capturing ◽  
Heel Lift

Abstract Background Achilles tendinopathy is one of the most common overuse injuries in running, and forefoot pronation, seen in flatfeet participants, has been proposed to cause additional loading across the Achilles tendon. Foot orthoses are one of the common and effective conservative treatment prescribed for Achilles tendinopathy, it works by correcting the biomechanical malalignment and reducing tendon load. Previous studies have shown reduction of Achilles Tendon load (ATL) during running by using customized arch support orthosis (CASO) or an orthotic heel lift (HL). However, there are still little biomechanical evidence and comparative studies to guide orthotic prescriptions for Achilles tendinopathy management. Therefore, this study seeks to investigate the two currently employed orthotic treatment options for Achilles tendinopathy: CASO and HL for the reduction of ATL and Achilles tendon loading rate (ATLR) in recreational runners with flatfeet. Methods Twelve participants were recruited and run along the runway in the laboratory for three conditions: (1) without orthoses, (2) with CASO (3) with HL. Kinematic and kinetic data were recorded by 3D motion capturing system and force platform. Ankle joint moments and ATL were computed and compared within the three conditions. Results Participants who ran with CASO (p = 0.001, d = 0.43) or HL (p = 0.001, d = 0.48) associated with a significant reduction in ATL when compared to without orthotics while there was no significant difference between the two types of orthoses, the mean peak ATL of CASO was slightly lower than HL. Regarding the ATLR, both orthoses, CASO (p = 0.003, d = 0.93) and HL (p = 0.004, d = 0.78), exhibited significant lower value than the control but similarly, no significant difference was noted between them in which the use of CASO yielded a slightly lower loading rate than that of HL. Conclusions Both CASO and HL were able to cause a significant reduction in peak ATL and ATLR comparing to without orthotics condition. There were subtle but no statistically significant differences in the biomechanical effects between the two types of orthoses. The findings help to quantify the effect of CASO and HL on load reduction of Achilles tendon and suggests that foot orthoses may serve to prevent the incidence of Achilles tendon pathologies. Trial registration NCT04003870 on clinicaltrials.gov 1 July 2019.

scholarly journals Controlled Trial to compare the Achilles Tendon load during running in flatfeet participants using a customized arch support orthoses vs an orthotic heel lift

2019 ◽  
Author(s):  
Kawin KW Lee ◽  
Samuel Ka Kin Ling ◽  
Patrick SH Yung
Keyword(s):  
Achilles Tendon ◽  
Loading Rate ◽  
Controlled Trial ◽  
Treatment Options ◽  
Achilles Tendinopathy ◽  
Foot Orthoses ◽  
Significant Difference ◽  
Arch Support ◽  
Motion Capturing ◽  
Heel Lift

Abstract Achilles tendinopathy is one of the most common overuse injuries in running, and forefoot pronation, seen in flatfeet participants, has been proposed to cause additional loading across the Achilles tendon. Foot orthoses are one of the common and effective conservative treatment prescribed for Achilles tendinopathy, it works by correcting the biomechanical malalignment and reducing tendon load. Previous studies have shown reduction of Achilles Tendon load (ATL) during running by using customized arch support orthosis (CASO) or an orthotic heel lift (HL). However, there are still little biomechanical evidence and comparative studies to guide orthotic prescriptions for Achilles tendinopathy management. Therefore, this study seeks to investigate the two currently employed orthotic treatment options for Achilles tendinopathy: CASO and HL for the reduction of ATL and Achilles tendon loading rate (ATLR) in recreational runners with flatfeet. Methods: 12 participants were recruited and run along the runway in the laboratory for three conditions: (1) without orthoses, (2) with CASO (3) with HL. Kinematic and kinetic data were recorded by 3D motion capturing system and force platform. Ankle joint moments and ATL were computed and compared within the three conditions. Results: Participants who ran with CASO (p=0.001, d=0.43) or HL (p=0.001, d=0.48) associated with a significant reduction in ATL when compared to without orthotics. There was no difference between the two types of orthoses, the mean peak ATL of CASO was slightly lower than HL. Regarding the ATLR, both orthoses, CASO (p=0.003, d= 0.93) and HL (p=0.004, d= 0.78), exhibited significant lower value than the control but similarly, no significant difference was noted between them in which the use of CASO yielded a slightly lower loading rate than that of HL. Conclusion: Both CASO and HL were able to cause a significant reduction in peak ATL and ATLR comparing to without orthotics condition. There were subtle but no statistically significant differences in the biomechanical effects between the two types of orthoses. The findings help to quantify the effect of CASO and HL on load reduction of Achilles tendon and suggests that foot orthoses may serve to prevent the incidence of Achilles tendon pathologies.

scholarly journals Controlled Trial to compare the Achilles Tendon load during running in flatfeet subjects using a customized arch support orthoses vs an orthotic heel lift

2019 ◽  
Author(s):  
Kawin KW Lee ◽  
Samuel Ka Kin Ling ◽  
Patrick SH Yung
Keyword(s):  
Achilles Tendon ◽  
Loading Rate ◽  
Controlled Trial ◽  
Treatment Options ◽  
Achilles Tendinopathy ◽  
Foot Orthoses ◽  
Significant Difference ◽  
Arch Support ◽  
Motion Capturing ◽  
Heel Lift

Abstract Introduction: Achilles tendinopathy is one of the most common overuse injuries in running,and forefoot pronation, seen in flatfeet subjects, has been proposed to cause additional loading across the Achilles tendon. Foot orthoses are one of the common and effective conservative treatment prescribed for Achilles tendinopathy, it works by correcting the biomechanical malalignment and reducing tendon load Previous studies have shown reduction of Achilles Tendon load (ATL) during running by using customized arch support orthosis (CASO) or an orthotic heel lift (HL). However, there are still little biomechanical evidence and comparative studies to guide orthotic prescriptions for Achilles tendinopathy management. Therefore, this study seeks to investigate the two currently employed orthotic treatment options for Achilles tendinopathy: CASO and HL for the reduction of ATL and Achilles tendon loading rate (ATLR) in recreational runners with flatfeet. Methods: 12 subjects were recruited and run along the runway in the laboratory for three conditions: (1) without orthoses, (2) with CASO (3) with HL. Kinematic and kinetic data were recorded by 3D motion capturing system and force platform. Ankle joint moments and ATL were computed and compared within the three conditions. Results: Subjects who ran with CASO (p=0.001, d=0.43) or HL (p=0.001, d=0.48) associated with a significant reduction in ATL when compared to without orthotics while there was no significant difference between the two types of orthoses, the mean peak ATL of CASO was slightly lower than HL. Regarding the ATLR, both orthoses, CASO (p=0.003, d= 0.93) and HL (p=0.004, d= 0.78), exhibited significant lower value than the control but similarly, no significant difference was noted between them in which the use of CASO yielded a slightly lower loading rate than that of HL. Conclusions: Both CASO and HL were able to cause a significant reduction in peak ATL and ATLR comparing to without orthotics condition. There were subtle differences in the biomechanical effects between the two types of orthoses. The findings help to quantify the effect of CASO and HL on load reduction of Achilles tendon and suggests that foot orthoses may serve to prevent the incidence of Achilles tendon pathologies. Trial: NCT04003870_clinicaltrials.gov, retrospectively_registered

scholarly journals Controlled Trial to compare the Achilles Tendon load during running in flatfeet participants using a customized arch support orthoses vs an orthotic heel lift

2019 ◽  
Author(s):  
Kawin KW Lee ◽  
Samuel Ka Kin Ling ◽  
Patrick SH Yung
Keyword(s):  
Achilles Tendon ◽  
Loading Rate ◽  
Controlled Trial ◽  
Treatment Options ◽  
Achilles Tendinopathy ◽  
Foot Orthoses ◽  
Significant Difference ◽  
Arch Support ◽  
Motion Capturing ◽  
Heel Lift

Abstract Background: Achilles tendinopathy is one of the most common overuse injuries in running, and forefoot pronation, seen in flatfeet participants, has been proposed to cause additional loading across the Achilles tendon. Foot orthoses are one of the common and effective conservative treatment prescribed for Achilles tendinopathy, it works by correcting the biomechanical malalignment and reducing tendon load. Previous studies have shown reduction of Achilles Tendon load (ATL) during running by using customized arch support orthosis (CASO) or an orthotic heel lift (HL). However, there are still little biomechanical evidence and comparative studies to guide orthotic prescriptions for Achilles tendinopathy management. Therefore, this study seeks to investigate the two currently employed orthotic treatment options for Achilles tendinopathy: CASO and HL for the reduction of ATL and Achilles tendon loading rate (ATLR) in recreational runners with flatfeet. Methods: 12 participants were recruited and run along the runway in the laboratory for three conditions: (1) without orthoses, (2) with CASO (3) with HL. Kinematic and kinetic data were recorded by 3D motion capturing system and force platform. Ankle joint moments and ATL were computed and compared within the three conditions. Results: Participants who ran with CASO (p=0.001, d=0.43) or HL (p=0.001, d=0.48) associated with a significant reduction in ATL when compared to without orthotics. There was no difference between the two types of orthoses, the mean peak ATL of CASO was slightly lower than HL. Regarding the ATLR, both orthoses, CASO (p=0.003, d= 0.93) and HL (p=0.004, d= 0.78), exhibited significant lower value than the control but similarly, no significant difference was noted between them in which the use of CASO yielded a slightly lower loading rate than that of HL. Conclusions: Both CASO and HL were able to cause a significant reduction in peak ATL and ATLR comparing to without orthotics condition. There were subtle but no statistically significant differences in the biomechanical effects between the two types of orthoses. The findings help to quantify the effect of CASO and HL on load reduction of Achilles tendon and suggests that foot orthoses may serve to prevent the incidence of Achilles tendon pathologies.

scholarly journals An exploration of the effect of proprioceptive knee bracing on biomechanics during a badminton lunge to the net, and the implications to injury mechanisms

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e6033 ◽  
Author(s):  
Raúl Valldecabres ◽  
Ana María de Benito ◽  
Greg Littler ◽  
Jim Richards
Keyword(s):  
Repeated Measures ◽  
Sagittal Plane ◽  
Rotation Velocity ◽  
Knee Extension ◽  
Knee Adduction Moment ◽  
Vertical Force ◽  
Balance Test ◽  
Assessment Scores ◽  
Peak Knee ◽  
Significant Difference

The aim of this study was to determine changes in knee biomechanics during badminton lunges due to fatigue, lunge strategy and knee bracing. Kinetic and kinematic data were collected from 16 experienced right-handed badminton players. Three factor repeated measures ANOVAs (lunge direction—fatigue—brace) were performed with Least Significant Difference pairwise comparisons. In addition, clinical assessments including; Y-balance test, one leg hop distance and ankle dorsiflexion range of motion were performed pre- and postfatigue. The knee showed significantly greater flexion during the forehand lunge compared to backhand. In contrast, the internal rotation velocity and the knee extension moment were greater during backhand. Knee angular velocity in the sagittal plane, peak knee moment and range of moment in the coronal plane and stance time showed significantly lower values postfatigue. In addition, the peak knee adduction moment showed significantly lower values in the braced condition in both the fatigued and nonfatigues states, and no significant differences were seen for peak vertical force, loading rate, approach velocity, or in any of the clinical assessment scores. There appears to be greater risk factors when performing a backhand lunge to the net compared to a forehand lunge, and proprioceptive bracing appears to reduce the loading at the knee.

“Going Backward”: Effects of age and fatigue on posterior-directed falls in Parkinson disease

2021 ◽  
pp. 1-9
Author(s):  
Evan V. Papa ◽  
Rita M. Patterson ◽  
Nicoleta Bugnariu
Keyword(s):  
Postural Control ◽  
Parkinson Disease ◽  
Repeated Measures ◽  
Center Of Pressure ◽  
Angular Displacement ◽  
Reaction Times ◽  
Older Individuals ◽  
Peak Knee ◽  
Significant Difference ◽  
Fatiguing Exercise

BACKGROUND: Nearly half of persons with Parkinson disease (PD) report fatigue as a factor in their fall history. However, it is unknown whether these self-reported falls are caused by a sensation of fatigue or performance fatigue. OBJECTIVE: We sought to investigate the influences of performance fatigue and age on postural control in persons with PD. METHODS: Individuals with PD (n = 14) underwent postural control assessments before (T0) and immediately after (T1) fatiguing exercise. Biomechanical data were gathered on participants completing a treadmill-induced, posterior-directed fall. Performance fatigue was produced using lower extremity resistance exercise on an isokinetic ergometer. Repeated measures ANCOVAs were used with age as a covariate to determine the effects of performance fatigue on biomechanical variables. RESULTS: After adjustment for age, there was a statistically significant difference in peak center of pressure (COP) latency during the support phase of recovery. Pairwise comparisons demonstrated a decrease in peak ankle displacement from T0 to T1. Age was also found to be significantly related to reaction time and peak knee displacement while participants were fatigued. CONCLUSIONS: The decreased peak COP latency, along with decreased ankle angular displacement, suggest that persons with PD adopt a stiffening strategy in response to backward directed falls. Postural stiffening is not uncommon in persons with PD and could be a risk factor for falls. Older individuals with PD demonstrate slower mobility scores and decreased reaction times in the setting of fatigue, suggesting a combined effect of the aging and fatigue processes.

Evaluation of skin displacement in the equine neck

2014 ◽  
Vol 10 (3) ◽  
pp. 181-186 ◽  
Author(s):  
A. Bergh ◽  
A. Egenvall ◽  
E. Olsson ◽  
M. Uhlhorn ◽  
M. Rhodin
Keyword(s):  
Mixed Models ◽  
Sagittal Plane ◽  
Cervical Vertebrae ◽  
Statistical Significance ◽  
Longitudinal Axis ◽  
Joint Motion ◽  
Skin Marker ◽  
Significant Difference ◽  
Axis Parallel ◽  
Kinematic Studies

Kinematic studies, using reflective skin markers, are commonly used to investigate equine joint motion in equitation science and for rehabilitation purposes. In order to interpret the registrations accurately, the degree of skin displacement has been described for the limbs and back, but not yet for the neck. The aim of the present study was to measure sagittal plane skin displacement in the equine neck. Radiopaque skin markers were applied to the skin over the first six cervical vertebrae of six healthy horses. Latero-lateral radiographs were taken in three standardised neck positions in the sagittal plane: control (horizontal neck), ‘on the bit’ and ‘nose to carpus’. The scales of the images were normalised and calculation of skin displacement was done by use of a coordinate system, dividing the displacement along an x-axis parallel to the vertebra's longitudinal axis and a y-axis perpendicular to the x-axis. Mixed models analysis was employed to study the differences in distances in x- and y-directions, and statistical significance was set to PÃ0.05. Between control and ‘nose to carpus’ positions, there were significant differences in skin marker locations, relative to the underlying vertebrae, in the x-direction for C1-6, and in y-direction for C3-6. Between normal and ‘on the bit’ positions, there were significant difference in both x- and y-directions for C6. Differences in marker locations along x- and y-axes, respectively, were 3±9 mm and 44±14 mm. The outcome of this study indicates that skin displacement should be considered when investigating equine neck motion with skin marker methodology.

scholarly journals Effect of Carnatic Music Listening Training on Speech in Noise Performance in Adults

2021 ◽  
Vol 25 (1) ◽  
pp. 22-26
Author(s):  
Raksha Amemane ◽  
Archana Gundmi ◽  
Kishan Madikeri Mohan
Keyword(s):  
Repeated Measures ◽  
Functional Organization ◽  
Control Group ◽  
Music Listening ◽  
Noise Performance ◽  
Short Term ◽  
Speech In Noise ◽  
Carnatic Music ◽  
Significant Difference ◽  
And Control

Background and Objectives: Music listening has a concomitant effect on structural and functional organization of the brain. It helps in relaxation, mind training and neural strengthening. In relation to it, the present study was aimed to find the effect of Carnatic music listening training (MLT) on speech in noise performance in adults.Subjects and Methods: A total of 28 participants (40-70 years) were recruited in the study. Based on randomized control trial, they were divided into intervention and control group. Intervention group underwent a short-term MLT. Quick Speech-in-Noise in Kannada was used as an outcome measure.Results: Results were analysed using mixed method analysis of variance (ANOVA) and repeated measures ANOVA. There was a significant difference between intervention and control group post MLT. The results of the second continuum revealed no statistically significant difference between post training and follow-up scores in both the groups.Conclusions: In conclusion short-term MLT resulted in betterment of speech in noise performance. MLT can be hence used as a viable tool in formal auditory training for better prognosis.

Effect of communication skills based group counseling on mothers’ sex dialogue with their adolescent daughters

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Tayebe Ziaei ◽  
Maryam Ghanbari Gorji ◽  
Naser Behnampour ◽  
Masumeh Rezaei Aval
Keyword(s):  
Communication Skills ◽  
Group Counseling ◽  
Repeated Measures ◽  
Intervention Group ◽  
Health Centers ◽  
Chi Square ◽  
Significant Difference ◽  
Mother And Daughter ◽  
Post Hoc ◽  
And Control

AbstractBackgroundSex dialogue is one of the most critical and challenging topics between mothers and adolescents. The knowledge and skills of mothers in sex dialogue with their daughters are essential. The purpose of this study is to determine the effect of group counseling based on communication skills on mothers through their sex dialogue with their daughters.MethodsA randomized controlled field trial was conducted on 168 couples of mothers and their daughters selected by the stratified matching method and randomly divided into two control and intervention groups. The mothers in the intervention group participated in a communication-based consultation in groups consisting of 6–12 people for 6–7 weekly sessions, each one lasting 60 min. The data collection tool was a Persian-translated questionnaire by Jaccard for sex dialogue between mother and daughter. The data were analyzed using Chi-square (χ2), ANOVA with repeated measures and modified post hoc Bonferroni tests.ResultsThere was a significant difference in the mean score of mother-daughter sex dialogue 1 week after intervention between the intervention (34.48 ± 8.74) and control (40.44 ± 9.49) groups (p = 0.001) and 1 month after the intervention between the intervention (30.41 ± 10.07) and control (42.47 ± 9.62) groups (p < 0.001).ConclusionThrough applying communication skills, an increase in mother-daughter sex dialogue frequency was observed after group counseling. Therefore, it is suggested to promote mother-daughter communication skills by accessing the mothers via schools, health centers and with the aid of midwifery counselors, midwives and other trained caretakers.

scholarly journals Effectiveness of Training Based on Healthy Human Theory and Emotion-Focused Therapy in Marital Happiness

2021 ◽  
Vol 6 (3) ◽  
pp. 81-90
Author(s):  
Sara Moradi ◽  
◽  
Asghar Aghaei ◽  
Mohsen Golparvar ◽  
◽  
...  
Keyword(s):  
Marital Conflict ◽  
Repeated Measures ◽  
Control Group ◽  
Marital Happiness ◽  
Healthy Human ◽  
Statistical Population ◽  
Emotion Focused Therapy ◽  
Significant Difference ◽  
Effectiveness Of Training ◽  
And Control

Background: Psychological factors affect marital conflict and happiness; in other words, they strengthen and shape marital relations. The present study aimed to investigate the effectiveness of training based on Healthy Human Theory (HHT) and Emotion-Focused Therapy (EFT) in marital happiness of couples living in Isfahan City, Iran. Materials & Methods: This research has a pretest-posttest control group design. The statistical population included all couples referring to mental health centers in Isfahan in 2020. The study sample consisted of 39 couples selected by the convenience sampling method. The participants were randomly divided into two experimental groups (training based on HHT and EFT) and control group (n=13 couples per group). The research instrument included the marital satisfaction scale. Follow-up was performed after 90 days. Repeated-measures ANOVA in SPSS software was used to analyze the data. Results: The results showed that training based on HHT significantly affected marital happiness compared to EFT and control group (P=0.001). The Mean±SD of the posttest scores of marital happiness in the HHT-based training, EFT, and control groups were 97.92±1.54, 87.50±5.56, and 75.38±8.71, respectively. There was no significant difference between the effects of HHT-based training and EFT on happiness in couples. Conclusion: Based on the results, the HHT-based training and EFT are appropriate methods for improving marital happiness.

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