Biomechanics of off-center monoarticular exercises with lever selectorized equipment.

abstract：:The purpose of this investigation was to assess the effects of stance width and foot rotation angle on three-dimensional knee joint moments during bodyweight squat performance. Twenty-eight participants performed 8 repetitions in 4 conditions differing in stance or foot rotation positions. Knee joint moment waveforms ...

journal_title：Journal of applied biomechanics

authors： Almosnino S,Kingston D,Graham RB

更新日期：2013-02-01 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：: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：:Our aim was to determine how skilled players regulate linear and angular impulse while maintaining balance during the golf swing. Eleven highly-skilled golf players performed swings with a 6-iron and driver. Components contributing to linear and angular impulse generated by the rear and target legs (resultant horizont...

journal_title：Journal of applied biomechanics

authors： Peterson TJ,Wilcox RR,McNitt-Gray JL

更新日期：2016-08-01 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：:The purpose of this study was to indicate the effect of fatigue on the underwater right arm stroke motion during the 100-m front crawl. The arm stroke motions of eight male competitive swimmers were captured three-dimensionally at 60 Hz in the positions of 15 m and 65 m from the start. The hand velocity, the arm angul...

journal_title：Journal of applied biomechanics

authors： Suito H,Ikegami Y,Nunome H,Sano S,Shinkai H,Tsujimoto N

更新日期：2008-11-01 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：:This study aimed to develop insight into the lower extremity joint coupling motions used in the maximal velocity phase of sprint running. Two-dimensional coordinate data were used to derive sagittal plane joint angle profiles of sprint running trials. Intralimb joint coupling motions were examined using a continuous r...

journal_title：Journal of applied biomechanics

authors： Gittoes MJ,Wilson C

更新日期：2010-05-01 00:00:00

abstract：:Maintenance of healthy bone mineral density (BMD) is important for preventing fractures in older adults. Strains experienced by bone in vivo stimulate remodeling processes, which can increase or decrease BMD. However, there has been little study of age differences in bone strains. This study examined the relative cont...

journal_title：Journal of applied biomechanics

authors： Anderson DE,Madigan ML

更新日期：2013-10-01 00:00:00

abstract：:Data piloting is important to ensure accurate marker coordinate data and to minimize camera dropout. Camera dropout results when a camera fails to image a marker, which often occurs when markers merge or become occluded. In this article, we present the conceptual framework for a numerical method of determining where v...

journal_title：Journal of applied biomechanics

authors： Manal K,Gardinier J

更新日期：2007-02-01 00:00:00

abstract：:This study examined sex differences in head kinematics and neck muscle activity during sudden head perturbations. Sixteen competitive ice hockey players participated. Three muscles were monitored bilaterally using surface electromyography: sternocleidomastoid, scalene, and splenius capitis. Head and thorax kinematics ...

journal_title：Journal of applied biomechanics

authors： Debison-Larabie C,Murphy BA,Holmes MWR

更新日期：2018-11-21 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：:Girls' lacrosse participation and head injury rates have increased within the past decade. In response, optional headgear was implemented following the recently developed ASTM International (ASTM) lacrosse headgear performance standards. It remains unknown how lacrosse headgear responds to blunt impacts after use. Our...

journal_title：Journal of applied biomechanics

authors： Kelshaw PM,Gould TE,Jesunathadas M,Cortes N,Caswell A,Edwards ED,Caswell SV

更新日期：2019-08-01 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 goal of this research was to analyze the effects of fatigue on the shock waves generated by foot strike. Twenty-two subjects were instrumented with an externally attached, lightweight accelerometer placed over the tibial tuberosity. The subjects ran on a treadmill for 30 min at a speed near their anaerobic thresho...

journal_title：Journal of applied biomechanics

authors： Verbitsky O,Mizrahi J,Voloshin A,Treiger J,Isakov E

更新日期：1998-08-01 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：:This preliminary study aimed to quantify the magnitude of the peak shoulder distraction force during the bowling action of female cricket fast bowlers. An eight camera Vicon motion analysis system operating at 120 Hz recorded the fast bowling actions of 18 Australian female fast bowlers. A three segment inverse soluti...

journal_title：Journal of applied biomechanics

authors： Stuelcken MC,Ferdinands RE,Ginn KA,Sinclair PJ

更新日期：2010-08-01 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：: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：: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：: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：: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：: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

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：:Trunk, pelvis, and leg movements are important for performance in sprint kayaking. Para-kayaking is a new Paralympic sport in which athletes with trunk and/or leg impairment compete in 3 classification groups. The purpose of this study was to identify how physical impairments impact on performance by examining: differ...

journal_title：Journal of applied biomechanics

authors： Bjerkefors A,Rosén JS,Tarassova O,Arndt A

更新日期：2019-04-01 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：: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：:Wrist splints are commonly prescribed to limit wrist motion and provide support at night and during inactive periods but are often used in the workplace. In theory, splinting the wrist should reduce wrist extensor muscle activity by stabilizing the joint and reducing the need for co-contraction to maintain posture. Te...

journal_title：Journal of applied biomechanics

authors： Domizio JD,Mogk JP,Keir PJ

更新日期：2008-08-01 00:00:00

abstract：:The aim of this study was to assess the effect of physical exercise on postural stability in sighted participants and individuals who are visually impaired, adjusted for potential modulatory effects of physical activity level and body mass index (BMI). The study included 23 participants who were severely visually impa...

journal_title：Journal of applied biomechanics

authors： Sadowska D,Stemplewski R,Szeklicki R

更新日期：2015-10-01 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