Gait mechanics are different between healthy controls and patients with multiple sclerosis.

abstract：:Running on a lower-body positive-pressure (LBPP) treadmill allows effects of weight support on leg muscle activation to be assessed systematically, and has the potential to facilitate rehabilitation and prevent overloading. The aim was to study the effect of running with weight support on leg muscle activation and to ...

journal_title：Journal of applied biomechanics

authors： Jensen BR,Hovgaard-Hansen L,Cappelen KL

更新日期：2016-08-01 00:00:00

abstract：:Isometric tasks have been a standard for electromyography (EMG) normalization stemming from anatomic and physiologic stability observed during contraction. Ballistic dynamic tasks have the benefit of eliciting maximum EMG signals for normalization, despite having the potential for greater signal variability. It is the...

journal_title：Journal of applied biomechanics

authors： Suydam SM,Manal K,Buchanan TS

更新日期：2017-07-01 00:00:00

abstract：:This study aimed to compare head impact exposures between practices and games in football players ages 9 to 14 years, who account for approximately 70% of all football players in the United States. Over a period of 2 seasons, 136 players were enrolled from 3 youth programs, and 49,847 head impacts were recorded from 3...

journal_title：Journal of applied biomechanics

authors： Bellamkonda S,Woodward SJ,Campolettano E,Gellner R,Kelley ME,Jones DA,Genemaras A,Beckwith JG,Greenwald RM,Maerlender AC,Rowson S,Duma SM,Urban JE,Stitzel JD,Crisco JJ

更新日期：2018-10-01 00:00:00

abstract：:Kinematic studies to date have not considered in what ways surface markers may affect the performance of the analyzed motion. This neglect is particularly apparent in studies of prehensile movements involving surface markers attached to the fingers. In order to specify any such effects, a range of kinematic parameters...

journal_title：Journal of applied biomechanics

authors： Domellöf E,Hopkins B,Francis B,Rönnqvist L

更新日期：2007-11-01 00:00:00

abstract：:The purpose of this study was to investigate age-related differences in muscle power during a surrogate task of trip recovery. Participants included 10 healthy young men (19-23 years old) and 10 healthy older men (65-83). The task involved releasing participants from a forward-leaning posture. After release, participa...

journal_title：Journal of applied biomechanics

authors： Madigan ML

更新日期：2006-08-01 00:00:00

abstract：:The purpose of this study was to evaluate whether agonist muscle fatigue changed the coactivation time and the co-contraction magnitude of the agonist and antagonist muscle, and if the agonist muscle fatigue produced bias (constant error: CE) and inconsistency (variable error: VE) of the force. Subjects are 10 healthy...

journal_title：Journal of applied biomechanics

authors： Huang YM,Chang YJ,Hsu MJ,Chen CL,Fang CY,Wong AM

更新日期：2009-11-01 00:00:00

abstract：:This study aimed to determine whether subject-specific individual muscle models for the ankle plantar flexors could be obtained from single joint isometric and isovelocity maximum torque measurements in combination with a model of plantar flexion. Maximum plantar flexion torque measurements were taken on one subject a...

journal_title：Journal of applied biomechanics

authors： Conceição F,King MA,Yeadon MR,Lewis MG,Forrester SE

更新日期：2012-12-01 00:00:00

abstract：:The purpose of this study was to explore the immediate effects of running speed and midsole type on foot loading during heel-toe running. Fifteen healthy male college students were required to complete 3 running trials on an indoor 45-m tartan runway at 4 different speeds (3, 4, 5, and 6 m/s) using 2 different running...

journal_title：Journal of applied biomechanics

authors： Peng P,Ding S,Wang Z,Zhang Y,Pan J

更新日期：2020-03-06 00:00:00

abstract：:The measurement of active drag in swimming is a biomechanical challenge. This research compared two systems: (i) measuring active drag (MAD) and (ii) assisted towing method (ATM). Nine intermediate-level swimmers (19.7 ± 4.4 years) completed front crawl trials with both systems during one session. The mean (95% confid...

journal_title：Journal of applied biomechanics

authors： Formosa DP,Toussaint HM,Mason BR,Burkett B

更新日期：2012-12-01 00:00:00

abstract：:It is not known if a physically active lifestyle, without systematic training, is sufficient to combat age-related muscle and strength loss. Therefore, the purpose of this study was to evaluate if the maintenance of a physically active lifestyle prevents muscle impairments due to aging. To address this issue, we evalu...

journal_title：Journal of applied biomechanics

authors： Baroni BM,Geremia JM,Rodrigues R,Borges MK,Jinha A,Herzog W,Vaz MA

更新日期：2013-10-01 00:00:00

abstract：:Investigations of joint loading in knee osteoarthritis (OA) typically normalize the knee adduction moment to global measures of body size (eg, body mass, height) to allow comparison between individuals. However, such measurements may not reflect knee size. This study used a morphometric measurement of the cartilage su...

journal_title：Journal of applied biomechanics

authors： Brisson NM,Stratford PW,Totterman S,Tamez-Peña JG,Beattie KA,Adachi JD,Maly MR

更新日期：2015-12-01 00:00:00

abstract：:One potential ACL injury situation is due to contact with another person or object during the flight phase, thereby causing the person to land improperly. Conversely, athletes often have flight-phase collisions but do land safely. Therefore, to better understand ACL injury causation and methods by which people typical...

journal_title：Journal of applied biomechanics

authors： Yom JP,Simpson KJ,Arnett SW,Brown CN

更新日期：2014-10-01 00:00:00

abstract：:The purpose of this study was to examine the interactions between aging, activity levels and maximal power production during cycling. Participants were divided into younger adults (YA), older active adults (OA,) and older sedentary adults (OS). Absolute maximum power was significantly greater in YA compared with OS an...

journal_title：Journal of applied biomechanics

authors： Korff T,Newstead AH,van Zandwijk R,Jensen JL

更新日期：2014-02-01 00:00:00

abstract：:Hamstring stiffness (K(HAM)) and leg stiffness (K(LEG)) are commonly examined relative to athletic performance and injury risk. Given these may be modifiable, it is important to understand day-to-day variations inherent in these measures before use in training studies. In addition, the extent to which K(HAM) and K(LEG...

journal_title：Journal of applied biomechanics

authors： Waxman JP,Schmitz RJ,Shultz SJ

更新日期：2015-10-01 00:00:00

abstract：:Cartilage material properties provide important insights into joint health, and cartilage material models are used in whole-joint finite element models. Although the biphasic model representing experimental creep indentation tests is commonly used to characterize cartilage, cartilage short-term response to loading is ...

journal_title：Journal of applied biomechanics

authors： Keenan KE,Pal S,Lindsey DP,Besier TF,Beaupre GS

更新日期：2013-06-01 00:00:00

abstract：:Although the lift force (F(L)) on a spinning baseball has been analyzed in previous studies, no study has analyzed such forces over a wide variety of spins. The purpose of this study was to describe the relationship between F(L) and spin for different types of pitches thrown by collegiate pitchers. Four high-speed vid...

journal_title：Journal of applied biomechanics

authors： Nagami T,Higuchi T,Nakata H,Yanai T,Kanosue K

更新日期：2016-04-01 00:00:00

abstract：:The purpose of this study was to investigate how the contraction-induced increase in distal biceps brachii tendon moment arm is related to that in elbow flexor muscle thickness, with a specific emphasis on the influence of the site-related differences in muscle thickness. The moment arm and muscle thickness were deter...

journal_title：Journal of applied biomechanics

authors： Akagi R,Iwanuma S,Hashizume S,Kanehisa H,Yanai T,Kawakami Y

更新日期：2014-02-01 00:00:00

abstract：:Recent evidence suggests previously concussed athletes are at greater risk for lower-extremity (LE) injuries than are controls. However, little is known regarding the influence of sports-related concussion (SRC) on landing biomechanics that may provide a mechanistic rationale for LE injury risk. The purpose of this in...

journal_title：Journal of applied biomechanics

authors： Avedesian JM,Covassin T,Dufek JS

更新日期：2020-07-31 00:00:00

abstract：:Elbow varus torque is a primary factor in the risk of elbow injury during pitching. To examine the effects of shoulder abduction and lateral trunk tilt angles on elbow varus torque, we conducted simulation and regression analyses on 33 college baseball pitchers. Motion data were used for computer simulations in which ...

journal_title：Journal of applied biomechanics

authors： Matsuo T,Fleisig GS

更新日期：2006-05-01 00:00:00

abstract：:This study aimed to examine the effects of knee position on the reliability and production of peak force (PF) and rate of force development (RFD) characteristics during an isometric squat. Fourteen resistance-trained females performed isometric squats at 90, 120, and 150° knee angles (corresponding to parallel, half, ...

journal_title：Journal of applied biomechanics

authors： Palmer TB,Pineda JG,Durham RM

更新日期：2018-04-01 00:00:00

abstract：:Parkinson's disease (PD) and aging lead to gait impairments. Some of the disturbances of gait are focused on step length, cadence, and temporal variability of gait cycle. Under experimental conditions gait can be overtly evaluated, but patients with PD are prone to expectancy effects; thus it seems relevant to determi...

journal_title：Journal of applied biomechanics

authors： Robles-García V,Corral-Bergantiños Y,Espinosa N,Jácome MA,García-Sancho C,Cudeiro J,Arias P

更新日期：2015-06-01 00:00:00

abstract：:Glide efficiency, the ability of a body to minimize deceleration over the glide, can change with variations in the body's size and shape. The purpose of this study was to investigate the relationships between glide efficiency and the size and shape characteristics of swimmers. Eight male and eight female swimmers perf...

journal_title：Journal of applied biomechanics

authors： Naemi R,Psycharakis SG,McCabe C,Connaboy C,Sanders RH

更新日期：2012-08-01 00:00:00

abstract：:Prolonged sitting has been associated with negative health effects. Walking workstations have become increasingly popular in the workplace. There is a lack of research on the biomechanical effect of walking workstations. This study analyzed whether walking while working alters normal gait patterns. A total of 9 partic...

journal_title：Journal of applied biomechanics

authors： Grindle DM,Baker L,Furr M,Puterio T,Knarr B,Higginson J

更新日期：2018-10-01 00:00:00

abstract：:Less than 50% of athletes pass criteria to return to sports (RTS) 6 months after ACL reconstruction (ACLR). Using data on 38 noncopers, we hypothesized that preoperative age, quadriceps strength index (QI), and knee flexion moments (KFM) during gait would predict the ability to pass/fail RTS criteria and that preopera...

journal_title：Journal of applied biomechanics

authors： Hartigan EH,Zeni J Jr,Di Stasi S,Axe MJ,Snyder-Mackler L

更新日期：2012-08-01 00:00:00

abstract：:Motion of the femur and pelvis during hip flexion has been examined previously, but principally in the sagittal plane and during nonfunctional activities. In this study we examined femoral elevation in the sagittal plane and pelvic rotation in the sagittal and frontal planes while subjects flexed their hips to ascend ...

journal_title：Journal of applied biomechanics

authors： Bohannon RW,Smutnick J

更新日期：2010-08-01 00:00:00

abstract：:The purpose of this study was to develop and evaluate an alternative method for determining the position of the anterior superior iliac spine (ASIS) during cycling. The approach used in this study employed an instrumented spatial linkage (ISL) system to determine the position of the ASIS in the parasagittal plane. A t...

journal_title：Journal of applied biomechanics

authors： Martin JC,Elmer SJ,Horscroft RD,Brown NA,Schultz BB

更新日期：2007-08-01 00:00:00

abstract：:The purpose of the present study was to examine the effect of chronic ankle instability (CAI) on lower-extremity joint coordination and stiffness during landing. A total of 21 female participants with CAI and 21 pair-matched healthy controls participated in the study. Lower-extremity joint kinematics were collected us...

journal_title：Journal of applied biomechanics

authors： Li Y,Ko J,Walker MA,Brown CN,Simpson KJ

更新日期：2021-01-15 00:00:00

abstract：:The purpose of the study was to investigate the foot posture, ankle muscle strength, range of motion (ROM), and plantar sensation differences among normal weight, overweight, and obese individuals. One hundred and twenty-three individuals (42 normal weight, 40 overweight, and 41 obese) aged between 18 and 50 years par...

journal_title：Journal of applied biomechanics

authors： Unver B,Selici K,Akbas E,Erdem EU

更新日期：2020-12-26 00:00:00

abstract：:As the modern workplace is dominated by submaximal repetitive tasks, knowledge of the effect of task location is important to ensure workers are unexposed to potentially injurious demands imposed by repetitive work in awkward or sustained postures. The purpose of this investigation was to develop a three-dimensional s...

journal_title：Journal of applied biomechanics

authors： McDonald AC,Brenneman EC,Cudlip AC,Dickerson CR

更新日期：2014-02-01 00:00:00

abstract：:Examinations of bone density changes in selected knee bone ends were evaluated prospectively in a randomized group of 28 patients, aged from 41 to 65 (mean: 55.3 years), who had varus deformations of their mechanic limb axes, mean 8 degrees. The examinations were conducted during the preoperative period, 10 days, 3, 6...

journal_title：Journal of applied biomechanics

authors： Kosior P,Czuraszkiewicz L,Tarczynska M,Mazurkiewicz T,Gaweda K

更新日期：2012-08-01 00:00:00