Relationships between glide efficiency and swimmers' size and shape characteristics.

abstract：:Altered scapular movement in subacromial pain syndrome has been demonstrated using discrete data reduction approach. However, this approach does not consider the data collinearity and variability, and scapular translations are poorly investigated in symptomatic individuals. The purpose of this study was to investigate...

journal_title：Journal of applied biomechanics

authors： Rossi DM,Resende RA,Hotta GH,da Fonseca ST,de Oliveira AS

更新日期：2020-02-25 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：: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：: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：: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：: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：:Inertial measurement units (IMU) provide a convenient tool for gait stability assessment. However, it is unclear how various gait characteristics relate to each other and whether gait characteristics can be obtained from resultant acceleration. Therefore, step duration variability was measured in treadmill walking fro...

journal_title：Journal of applied biomechanics

authors： Rantalainen T,Hart NH,Nimphius S,Wundersitz DW

更新日期：2016-08-01 00:00:00

abstract：:The purpose of this study was to identify alterations in preparatory muscle activation patterns across different drop heights in female athletes. Sixteen female high school volleyball players performed the drop vertical jump from three different drop heights. Surface electromyography of the quadriceps and hamstrings w...

journal_title：Journal of applied biomechanics

authors： Ford KR,Myer GD,Schmitt LC,Uhl TL,Hewett TE

更新日期：2011-08-01 00:00:00

abstract：:The length of a muscle's moment arm can be estimated non-invasively using ultrasound, and the tendon excursion method. The main assumption with the tendon excursion method, however, is that the force acting on the tendon during passive rotation is constant. However, passive force changes through the range of motion, a...

journal_title：Journal of applied biomechanics

authors： Fletcher JR,MacIntosh BR

更新日期：2018-01-24 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：: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：:The goal of this pilot study was to characterize the effects of gait training on the capacity of muscles to produce body accelerations and relate these changes to mobility improvements seen in children with cerebral palsy (CP). Five children (14 years ± 3 y; GMFCS I-II) with spastic diplegic CP participated in a 6-wee...

journal_title：Journal of applied biomechanics

authors： Hegarty AK,Kurz MJ,Stuberg W,Silverman AK

更新日期：2016-10-01 00:00:00

abstract：:The purpose of this study was to investigate muscle and tendon properties in highly trained sprinters and their relations to running performance. Fifteen sprinters and 15 untrained subjects participated in this study. Muscle thickness and tendon stiffness of knee extensors and plantar flexors were measured. Sprinter m...

journal_title：Journal of applied biomechanics

authors： Kubo K,Ikebukuro T,Yata H,Tomita M,Okada M

更新日期：2011-11-01 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 aim of this study was to determine the effects of pole length on energy cost and kinematics in cross country double poling. Seven sub-elite male athletes were tested using pole sets of different lengths (ranging between 77% and 98% of participants' body height). Tests were conducted on a treadmill, set to a 2% inc...

journal_title：Journal of applied biomechanics

authors： Onasch F,Killick A,Herzog W

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：:It has been suggested that noncontact anterior cruciate ligament injury commonly occurs during sports requiring acute deceleration or landing motion and that female athletes are more likely to sustain the injury than male athletes. The purpose of this study was to make task-to-task and male-female comparisons of knee ...

journal_title：Journal of applied biomechanics

authors： Tanikawa H,Matsumoto H,Komiyama I,Kiriyama Y,Toyama Y,Nagura T

更新日期：2013-12-01 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：: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：: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：:Proper scapular motion is crucial for normal shoulder mechanics. Scapular motion affects glenohumeral joint function during throwing, yet little is known about this dynamic activity. Asymptomatic subjects (10 male and 10 female), ages 21 to 45, were analyzed. Electromagnetic surface sensors on the sternum, acromion, a...

journal_title：Journal of applied biomechanics

authors： Meyer KE,Saether EE,Soiney EK,Shebeck MS,Paddock KL,Ludewig PM

更新日期：2008-02-01 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：: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：: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 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：: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：: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：:Measuring lumbar spine range of motion (ROM) using multiple movements is impractical for clinical research, because finding statistically significant effects requires a large proportion of subjects to present with the same impairment. The purpose of this study was to develop a single measure representing the total ava...

journal_title：Journal of applied biomechanics

authors： Al Zoubi FM,Preuss RA

更新日期：2013-12-01 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