Changes in Sprint Stride Kinematics with Age in Master’s Athletes

1993 ◽  
Vol 9 (1) ◽  
pp. 15-26 ◽  
Author(s):  
Nancy Hamilton
Keyword(s):  
Range Of Motion ◽  
Stride Length ◽  
Full Range ◽  
Flight Time ◽  
Peak Performance ◽  
Swing Time ◽  
Proportional Relationship ◽  
Extremity Motion ◽  
Calculated Velocity ◽  
Support Time

A study was undertaken to determine the kinematic nature of the decline in sprint velocity that has been found to occur with aging. Subjects included 162 Master’s sprinters ranging in age from 30 to 94 years. Data were collected at a national championship meet and a World Veterans Championships through use of videotape and the Peak Performance Motion Measurement System. From the digitized videotape data, measures of sprint stride velocity, stride length, stride period, support time, swing time, flight time, and hip, knee, and trunk range of motion were calculated. Velocity, stride length, flight time, swing time, and range of motion in the hip and knee all decreased significantly (p<.05) with age, whereas stride period and support time increased. Further, the proportional relationship between the components of the stride was significantly (p<.05) altered. From this it was inferred that as these sprinters aged there was a decreased ability to exert muscle force as well as a decreased ability to move quickly through a full range of lower extremity motion.

scholarly journals Gait and Axial Spondyloarthritis: Comparative Gait Analysis Study Using Foot-Worn Inertial Sensors

10.2196/27087 ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. e27087
Author(s):  
Julie Soulard ◽  
Jacques Vaillant ◽  
Athan Baillet ◽  
Philippe Gaudin ◽  
Nicolas Vuillerme
Keyword(s):  
Pain Intensity ◽  
Gait Speed ◽  
Stride Length ◽  
Healthy Controls ◽  
Double Support ◽  
Swing Time ◽  
Gait Parameters ◽  
Stance Time ◽  
Double Support Time ◽  
Support Time

Background Axial spondyloarthritis (axSpA) can lead to spinal mobility restrictions associated with restricted lower limb ranges of motion, thoracic kyphosis, spinopelvic ankylosis, or decrease in muscle strength. It is well known that these factors can have consequences on spatiotemporal gait parameters during walking. However, no study has assessed spatiotemporal gait parameters in patients with axSpA. Divergent results have been obtained in the studies assessing spatiotemporal gait parameters in ankylosing spondylitis, a subgroup of axSpA, which could be partly explained by self-reported pain intensity scores at time of assessment. Inertial measurement units (IMUs) are increasingly popular and may facilitate gait assessment in clinical practice. Objective This study compared spatiotemporal gait parameters assessed with foot-worn IMUs in patients with axSpA and matched healthy individuals without and with pain intensity score as a covariate. Methods A total of 30 patients with axSpA and 30 age- and sex-matched healthy controls performed a 10-m walk test at comfortable speed. Various spatiotemporal gait parameters were computed from foot-worn inertial sensors including gait speed in ms–1 (mean walking velocity), cadence in steps/minute (number of steps in a minute), stride length in m (distance between 2 consecutive footprints of the same foot on the ground), swing time in percentage (portion of the cycle during which the foot is in the air), stance time in percentage (portion of the cycle during which part of the foot touches the ground), and double support time in percentage (portion of the cycle where both feet touch the ground). Results Age, height, and weight were not significantly different between groups. Self-reported pain intensity was significantly higher in patients with axSpA than healthy controls (P<.001). Independent sample t tests indicated that patients with axSpA presented lower gait speed (P<.001) and cadence (P=.004), shorter stride length (P<.001) and swing time (P<.001), and longer double support time (P<.001) and stance time (P<.001) than healthy controls. When using pain intensity as a covariate, spatiotemporal gait parameters were still significant with patients with axSpA exhibiting lower gait speed (P<.001), shorter stride length (P=.001) and swing time (P<.001), and longer double support time (P<.001) and stance time (P<.001) than matched healthy controls. Interestingly, there were no longer statistically significant between-group differences observed for the cadence (P=.17). Conclusions Gait was significantly altered in patients with axSpA with reduced speed, cadence, stride length, and swing time and increased double support and stance time. Taken together, these changes in spatiotemporal gait parameters could be interpreted as the adoption of a so-called cautious gait pattern in patients with axSpA. Among factors that may influence gait in patients with axSpA, patient self-reported pain intensity could play a role. Finally, IMUs allowed computation of spatiotemporal gait parameters and are usable to assess gait in patients with axSpA in clinical routine. Trial Registration ClinicalTrials.gov NCT03761212; https://clinicaltrials.gov/ct2/show/NCT03761212 International Registered Report Identifier (IRRID) RR2-10.1007/s00296-019-04396-4

scholarly journals A Full-Range Flexible and Printed Humidity Sensor Based on a Solution-Processed P(VDF-TrFE)/Graphene-Flower Composite

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1915
Author(s):  
Shenawar Ali Khan ◽  
Muhammad Saqib ◽  
Muhammad Muqeet Rehman ◽  
Hafiz Mohammad Mutee Ur Rehman ◽  
Sheik Abdur Rahman ◽  
...  
Keyword(s):  
Active Layer ◽  
Humidity Sensor ◽  
High Reliability ◽  
Full Range ◽  
High Sensitivity ◽  
Fast Response ◽  
Considerable Change ◽  
Relative Humidity Range ◽  
Response And Recovery ◽  
Proportional Relationship

A novel composite based on a polymer (P(VDF-TrFE)) and a two-dimensional material (graphene flower) was proposed as the active layer of an interdigitated electrode (IDEs) based humidity sensor. Silver (Ag) IDEs were screen printed on a flexible polyethylene terephthalate (PET) substrate followed by spin coating the active layer of P(VDF-TrFE)/graphene flower on its surface. It was observed that this sensor responds to a wide relative humidity range (RH%) of 8–98% with a fast response and recovery time of 0.8 s and 2.5 s for the capacitance, respectively. The fabricated sensor displayed an inversely proportional response between capacitance and RH%, while a directly proportional relationship was observed between its impedance and RH%. P(VDF-TrFE)/graphene flower-based flexible humidity sensor exhibited high sensitivity with an average change of capacitance as 0.0558 pF/RH%. Stability of obtained results was monitored for two weeks without any considerable change in the original values, signifying its high reliability. Various chemical, morphological, and electrical characterizations were performed to comprehensively study the humidity-sensing behavior of this advanced composite. The fabricated sensor was successfully used for the applications of health monitoring and measuring the water content in the environment.

scholarly journals An Analysis of Full Range of Motion vs. Partial Range of Motion Training in the Development of Strength in Untrained Men

2004 ◽  
Vol 18 (3) ◽  
pp. 518-521
Author(s):  
Dwayne C. Massey ◽  
John Vincent ◽  
Mark Maneval ◽  
Melissa Moore ◽  
J. T. Johnson
Keyword(s):  
Range Of Motion ◽  
Full Range

scholarly journals A Simple and Inexpensive Management for Peroneus Longus Dislocation

2019 ◽  
Vol 7 (11_suppl6) ◽  
pp. 2325967119S0047
Author(s):  
Fahroni Cahyono Winata
Keyword(s):  
Range Of Motion ◽  
Ultrasound Examination ◽  
Full Range ◽  
Treatment Strategies ◽  
Sports Injury ◽  
Lateral Malleolus ◽  
Bone Flap ◽  
Convex Shape ◽  
Longus Tendon ◽  
Dynamic Ultrasound

Introduction: Peroneal longus dislocation is an uncommon sports injury and commonly misdiagnosed. Imaging measure includes plain radiography, ultrasonography, and MRI examination. Treatment strategies include controversial nonoperative treatment with a significant failure rate and several surgical procedures were reported. We reporting a chronic peroneal longus dislocation case in our hospital. Material and methods: Twenty-two years old male presented with a painful snapping lateral ankle suffered 3-month prior surgery. He played futsal and suddenly he felt popped on his ankle followed by pain and swelling. Dynamic ultrasound examination shows dislocation of peroneal longus tendon and convex shape of the retromalleolar groove. A five-centimeter long incision is made posterior to the lateral malleolus and during exploration we confirmed the ultrasound findings. We perform retromalleolar groove deepening by making bone flap medially, curette the cancellous bone and tamper back the bone flap, followed by superior peroneal retinaculum (SPR) reconstruction to the medial aspect of lateral cortex of the lateral malleolus to provide smooth gliding surface. We immobilize the ankle with a cast for six weeks for soft tissue healing. Result: After six weeks he can perform the almost full range of motion of the ankle without pain. Followed by further physiotherapy to regain full range of motion of the ankle. He returns to sport six months after surgery. Ultrasound examination shows the stability of the peroneal longus tendon. Conclusion: Dynamic ultrasound examination and retromalleolar groove deepening with SPR reconstruction are simple and inexpensive management for peroneal longus dislocation

Outcomes of the glove-gauze regimen for managing burn injuries of the hand

2020 ◽  
Vol 45 (7) ◽  
pp. 737-741
Author(s):  
Oleksandra Vyrva ◽  
Elliott Smock ◽  
Joel Pessa ◽  
Sunil M. Thirkannad
Keyword(s):  
Physical Therapy ◽  
Range Of Motion ◽  
Full Range ◽  
Effective Means ◽  
Healing Time ◽  
Full Thickness ◽  
Level Of Evidence ◽  
Partial Thickness ◽  
And Function ◽  
Hand Burns

We studied the efficacy of the glove-gauze regimen in treating superficial, partial-thickness and small full-thickness hand burns. Outcome measures included healing time, need for surgical intervention, need for formal physical therapy, restoration of range of motion, return to function and incidence of infection. All patients ( n = 123) successfully completed the regimen with an average healing time of 3.7 weeks. None required surgical debridement and seven (6%) required formal physical therapy. One hundred and eighteen patients (96%) regained full range of motion and 122 (99%) returned to their previous level of work. We believe that the glove-gauze regimen provides a simplified and effective means of managing hand burns. We conclude from our patients that the glove-gauze regimen is an effective treatment that can ensure uneventful healing of superficial, partial-thickness and small full-thickness burns. A majority of our patients healed with full range of motion and function without formal physical therapy. Level of evidence: IV

scholarly journals A novel Medial Patellofemoral Ligament Reconstruction Technique; Preliminary Clinical Results

2017 ◽  
Vol 5 (2_suppl2) ◽  
pp. 2325967117S0007
Author(s):  
Hasan Basri Sezer ◽  
Raffi Armağan ◽  
Muharrem Kanar ◽  
Osman Tuğrul Eren
Keyword(s):  
Range Of Motion ◽  
Medial Patellofemoral Ligament ◽  
Femoral Tunnel ◽  
Full Range ◽  
Lateral Collateral Ligament ◽  
Reconstruction Technique ◽  
Collateral Ligament ◽  
Ligament Rupture ◽  
Patella Luxation ◽  
The Mean

Medial Patellofemoral ligament(MPFL) is the main passive stabilizer of the patellofemoral joint. MPFL is injured in the 2/3 rds of the patients after patella luxation. In this study we present a novel aproach to the anatomical MPFL reconstruction and preliminary results of the technique. We operated 7 patients(4 female and female and 3 male) who applied to our clinic after a patella luxation episode. The mean age was 27,1 years(16-42). The mean follow up time was 23,5 months(24-35). We evaluated the patients clinically and radiologically for concommitant pathologies. 1 patient had patellar cartilage demage and patella alta, 1 patient had medial collateral ligament rupture, 1 patient had lateral collateral ligament and anterior cruciate ligament rupture and these pathologies were treated as well. The operation was done in the supine position on a radiolucent table and under the image intensifier control. The semitendinosus autograft was prepared. The femoral tunnel was drilled and double strand graft was introduced in the femoral tunnel and secured with ToggleLoc femoral fixation device(Biomet). The graft was advanced over the facia to the patellar side and passed through the 2 patellar tunnels and tied to each other. After exercising the knee the graft tension was rechecked at 30 degrees of knee flexion. Early postoperatively range of motion and quadriceps strenghtening exercises were carried out and patients were allowed to bear weight. All of the patients had full range of motion and free of pain. Postoperative x-ray and MRI examinations revealed the correction of patellar tilt and lateral shift of the patella in all patients. The only complication was a fissure of patella in 1 patient in the 6th week of rehabilitation due to anteriorly located patellar tunnel and heavy exercise. We immobilsed the patient in a brace and the patient returned to rehabilitation after 6 weeks when the fissure healed. All the patients returned to the previous functional level. Our anatomical MPFL technique uses ToggleLoc for the femoral side but implant free at the patellar side. The technique provided excellent preliminiary result in all of the patients. The technique allows graft retensioning again and again from both the femoral and the patellar side. The double bundle reconstruction seems to immitate the natural behaviour of the MPFL. However patellar tunnels carry a substantial risk of patella fracture and must be placed with great attention.

ENHANCING A KINEMATICALLY DERIVED AXIS OF THE KNEE USING A KNEE NAVIGATION SYSTEM

2008 ◽  
Vol 11 (03) ◽  
pp. 127-133
Author(s):  
Lisa Case Doro ◽  
Richard E. Hughes ◽  
Andrew G. Urquhart
Keyword(s):  
Range Of Motion ◽  
Knee Arthroplasty ◽  
Navigation System ◽  
Mechanical Axis ◽  
Full Range ◽  
Component Position ◽  
Transepicondylar Axis ◽  
Bony Landmarks

Purpose: Component position is critical in knee arthroplasty. We propose using a navigated knee axis (NKA) that is kinematically determined using a navigation system as an alignment reference, instead of defining the transepicondylar axis (TEA) with bony landmarks. This paper investigates whether this NKA should be computed over small arc segments versus over a full range of motion. Methods: Twelve unembalmed cadaver knees were tested. A navigation system computed the NKA for segments and for the full arc of motion in multiple planes. Results: The NKA computed near extension was different from the plane perpendicular to the mechanical axis (P > 0.005), while the NKA computed in flexion matched the TEA. Conclusion: The NKA determined from the full arc of motion was more reproducible and more closely estimated important knee parameters.

The “Trigger” Thumb Locked in Extension – An Unusual Presentation of a Common Paediatric Condition

2016 ◽  
Vol 21 (02) ◽  
pp. 234-238 ◽  
Author(s):  
Bruce R. Johnstone ◽  
L. J. Currie ◽  
Edmund W. Ek ◽  
Daniel J. Wilks ◽  
David B. McCombe ◽  
...  
Keyword(s):  
Range Of Motion ◽  
Operating Room ◽  
Full Range ◽  
Interphalangeal Joint ◽  
Unusual Presentation ◽  
Trigger Thumb ◽  
A1 Pulley

Background: We report a variant of paediatric trigger thumb which is locked in extension rather than flexion. Methods: Eleven children with 14 trigger thumbs (three bilateral) locked in extension were reviewed retrospectively over a 12-year period. The number of flexed trigger thumbs encountered over this period was established from the operating room database. Results: All children were treated with release of the A1 pulley. Nine children achieved a full range of motion at the interphalangeal joint. One child with bilateral extended trigger thumbs required bilateral dorsal capsulotomy and another child developed temporary mild triggering in flexion. Conclusions: Approximately 1% of trigger thumbs treated operatively at this institution presented as the extended variant. Trigger thumb locked in extension should be considered in a child presenting with inability to flex the thumb.

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