The loss of dexterity in the bilateral lower extremities in patients with stroke.

abstract：:The purpose of the present work was to study swimmers' efficiency during the underwater phase of the grab start. Eight high-level swimmers participated in this study. They performed two types of start: a regular grab start (with underwater leg propulsion after the glide) and a grab start with no underwater movement (s...

journal_title：Journal of applied biomechanics

authors： Elipot M,Dietrich G,Hellard P,Houel N

更新日期：2010-11-01 00:00:00

abstract：:In this paper, a literature review is presented regarding the hydrodynamic effects of different hand and arm movements during swimming with the aim to identify lacunae in current methods and knowledge, and to distil practical guidelines for coaches and swimmers seeking to increase swimming speed. Experimental and nume...

journal_title：Journal of applied biomechanics

authors： van Houwelingen J,Schreven S,Smeets JB,Clercx HJ,Beek PJ

更新日期：2017-02-01 00:00:00

abstract：:We propose that learning proper hitting kinematics should be encouraged at a young age during youth baseball because this may help reinforce proper hitting kinematics as a player progresses to higher levels of baseball in their adult years. To enhance our understanding between youth and adult baseball hitting, kinemat...

journal_title：Journal of applied biomechanics

authors： Escamilla RF,Fleisig GS,DeRenne C,Taylor MK,Moorman CT 3rd,Imamura R,Barakatt E,Andrews JR

更新日期：2009-08-01 00:00:00

abstract：:Researchers conduct gait analyses utilizing both overground and treadmill modes of running. Previous studies comparing these modes analyzed discrete variables. Recently, techniques involving quantitative pattern analysis have assessed kinematic curve similarity in gait. Therefore, the purpose of this study was to comp...

journal_title：Journal of applied biomechanics

authors： Fellin RE,Manal K,Davis IS

更新日期：2010-11-01 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：: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：:The aim of this systematic review was to evaluate the impact of bilaterally symmetrical backpack systems borne on the posterior trunk on walking biomechanics, as backpacks represent the most prevalent method of load carriage in the military and civilian population. A search of electronic databases was performed for st...

journal_title：Journal of applied biomechanics

authors： Liew B,Morris S,Netto K

更新日期：2016-12-01 00:00:00

abstract：:Cutting maneuvers can be executed at a range of angles and speeds, and these whole-body task descriptors are closely associated with lower-limb mechanical loading. Asymmetries in angle and speed when changing direction off the operated and nonoperated limbs after anterior cruciate ligament reconstruction may therefore...

journal_title：Journal of applied biomechanics

authors： Daniels KAJ,Drake E,King E,Strike S

更新日期：2021-01-22 00:00:00

abstract：:For a physiologically realistic range of joint motion and therefore range of muscle fiber lengths, only part of the force-length curve can be used in vivo; i.e., the section of the force-length curve that is expressed can vary. The purpose of this study was to determine the expressed section of the force-length relati...

journal_title：Journal of applied biomechanics

authors： Winter SL,Challis JH

更新日期：2008-08-01 00:00:00

abstract：:This study aimed to compare the between-session reliability of the load-velocity relationship between (1) linear versus polynomial regression models, (2) concentric-only versus eccentric-concentric bench press variants, as well as (3) the within-participants versus the between-participants variability of the velocity ...

journal_title：Journal of applied biomechanics

authors： Pestaña-Melero FL,Haff GG,Rojas FJ,Pérez-Castilla A,García-Ramos A

更新日期：2018-06-01 00:00:00

abstract：:Our purpose was to characterize shoulder muscle volume and isometric moment, as well as their relationship, for healthy middle- aged adults. Muscle volume and maximum isometric joint moment were assessed for 6 functional muscle groups of the shoulder, elbow, and wrist in 10 middle-aged adults (46–60 y, 5M, 5F). ...

journal_title：Journal of applied biomechanics

authors： Saul KR,Vidt ME,Gold GE,Murray WM

更新日期：2015-12-01 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：:In running, foot contact patterns (rear-, mid-, or forefoot contact) influence impact intensity and initial ankle and foot kinematics. The aim of the study was to compare impact intensity and its spatial distribution under the foot between different foot contact patterns. Forty-nine subjects ran at 3.2 m·s-1 over a le...

journal_title：Journal of applied biomechanics

authors： Breine B,Malcolm P,Segers V,Gerlo J,Derie R,Pataky T,Frederick EC,De Clercq D

更新日期：2017-12-01 00:00:00

abstract：:This study examined lower extremity joint moments during walk and turn with different turn angles and pivot feet. Seven young adults (age 21+/-1.3 yrs) were asked to walk at a self-selected speed (1.35+/-0.15 m/s) and to turn to the right using right (spin turn) and left (step turn) pivot feet at turn angles of 0 degr...

journal_title：Journal of applied biomechanics

authors： Xu D,Chow JW,Wang YT

更新日期：2006-02-01 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：:In functional principal component analysis (fPCA) a threshold is chosen to define the number of retained principal components, which corresponds to the amount of preserved information. A variety of thresholds have been used in previous studies and the chosen threshold is often not evaluated. The aim of this study is t...

journal_title：Journal of applied biomechanics

authors： Richter C,McGuinness K,O'Connor NE,Moran K

更新日期：2014-12-01 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：:Multiple sclerosis (MS) causes severe gait problems in relatively young individuals, yet there have been limited studies to quantitatively identify the specific gait parameters that are affected. The purpose of this study was to define any differences in biomechanical gait parameters between patients with MS and healt...

journal_title：Journal of applied biomechanics

authors： Huisinga JM,Schmid KK,Filipi ML,Stergiou N

更新日期：2013-06-01 00:00:00

abstract：:The purpose of this study was to determine whether a lateral wedge insole reduces the external knee adduction moment during slope walking. Twenty young, healthy subjects participated in this study. Subjects walked up and down a slope using 2 different insoles: a control flat insole and a 7° lateral wedge insole. A thr...

journal_title：Journal of applied biomechanics

authors： Uto Y,Maeda T,Kiyama R,Kawada M,Tokunaga K,Ohwatashi A,Fukudome K,Ohshige T,Yoshimoto Y,Yone K

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：: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：:The aim was to compare torque and rate of torque development of lower limb muscles between older women with functional and slow gait speeds to determine which muscle group is the best predictor of functional gait speed, and to establish strength thresholds needed for functional walking speed. Torque and rate of torque...

journal_title：Journal of applied biomechanics

authors： Morcelli MH,LaRoche DP,Crozara LF,Marques NR,Hallal CZ,Gonçalves M,Navega MT

更新日期：2018-08-01 00:00:00

abstract：:Use of a shank shell has been shown to estimate tibial transverse rotations better than skin-mounted markers. However, the day-to-day reliability of the transverse tibial rotations using an individually molded shank shell has not been previously investigated. This study examined the between-tests and trials reliabilit...

journal_title：Journal of applied biomechanics

authors： Levinger P,Gilleard W,Coleman C

更新日期：2005-05-01 00:00:00

abstract：:Low back pain is a common problem among competitive swimmers, and repeated torso hyperextension is claimed to be an etiological factor. The purpose of this study was to describe the three-dimensional torso configurations in the front crawl stroke and to test the hypothesis that swimmers experience torso hyperextension...

journal_title：Journal of applied biomechanics

authors： Du T,Narita I,Yanai T

更新日期：2016-02-01 00:00:00

abstract：:Weak hip muscle strength and excessive hip motion during running have been suggested as potential risk factors for developing patellofemoral pain syndrome (PFPS) in females, but not males. There is conflicting evidence on the relationship between hip strength and hip kinematics, which may be partly due to sex differen...

journal_title：Journal of applied biomechanics

authors： Hannigan JJ,Osternig LR,Chou LS

更新日期：2018-02-01 00:00:00

abstract：:The purpose of this study was to examine how wave-induced platform motion effects postural stability when handling loads. Twelve participants (9 male, 3 female) performed a sagittal lifting/lowering task with a 10 kg load in different sea conditions off the coast of Halifax, Nova Scotia, Canada. Trunk kinematics and f...

journal_title：Journal of applied biomechanics

authors： Duncan CA,Mackinnon SN,Albert WJ

更新日期：2012-05-01 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 purpose of this study was to explore movement variability of throwing arm and ball release parameters during the water polo shot and to compare variability between successful (hit) and unsuccessful (miss) outcomes. Seven injury free, subelite, females completed 10 trials of the 5 m water polo penalty shot. Intrain...

journal_title：Journal of applied biomechanics

authors： Taylor PG,Landeo R,Coogan J

更新日期：2014-06-01 00:00:00

abstract：:Volleyball players are at high risk of overuse shoulder injuries, with spike biomechanics a perceived risk factor. This study compared spike kinematics between elite male volleyball players with and without a history of shoulder injuries. Height, mass, maximum jump height, passive shoulder rotation range of motion (RO...

journal_title：Journal of applied biomechanics

authors： Mitchinson L,Campbell A,Oldmeadow D,Gibson W,Hopper D

更新日期：2013-04-01 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