Journal of applied biomechanics (J APPL BIOMECH)

Publisher: International Society of Biomechanics; International Society for the Biomechanics of Sport, Human Kinetics

Journal description

The Journal of Applied Biomechanics (JAB) is a quarterly journal devoted to the study of human biomechanics in sport, exercise, and rehabilitation. JAB brings you complete coverage of the applied aspects of biomechanics. In each issue, you'll find research articles, clinical studies, and other pertinent information highlighting current advances in the field. JAB is an official journal of the International Society of Biomechanics.

Current impact factor: 0.98

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 0.984
2013 Impact Factor 0.904
2012 Impact Factor 1.259
2011 Impact Factor 0.761
2010 Impact Factor 1.078
2009 Impact Factor 0.81
2008 Impact Factor 1.197
2007 Impact Factor 1.123
2006 Impact Factor 0.646
2005 Impact Factor 0.438
2004 Impact Factor 0.438
2003 Impact Factor 0.574
2002 Impact Factor 0.545
2001 Impact Factor 0.311
2000 Impact Factor 0.815
1999 Impact Factor 0.868
1998 Impact Factor 0.885
1997 Impact Factor 0.508
1996 Impact Factor 0.589
1995 Impact Factor 0.184
1994 Impact Factor 0.136

Impact factor over time

Impact factor
Year

Additional details

5-year impact 1.12
Cited half-life 9.30
Immediacy index 0.08
Eigenfactor 0.00
Article influence 0.37
Website Journal of Applied Biomechanics website
Other titles Journal of applied biomechanics, JAB
ISSN 1065-8483
OCLC 26777588
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Human Kinetics

  • Pre-print
    • Archiving status unclear
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Author's post-print only (in PDF or other image capture format)
    • On the author's personal website(s) or institutional repository
    • Publisher's version/PDF cannot be used
    • Publisher copyright and source must be acknowledged
    • Must link to publisher version
    • Set statement to accompany deposit "as accepted for publication"
    • Publisher last contacted on 05/12/2013
  • Classification
    blue

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: For the dominant limb, a velocity-dependent change in rotational axes during the kinesthetic control of unconstrained 3D arm rotations was reported and thus the question arises if this can be reproduced for the non-dominant arm. The rotation axes considered are the axes of minimum inertia (e3), the shoulder center of mass axis (SH-CM), and the shoulder-elbow axis (SH-EL). The objective of this study was to examine whether the minimum inertia axis would constrain internal-external rotations of the shoulder at fast velocity. Participants performed cyclic rotations of their arms in two sensory conditions and at two velocities. The elbow configurations were either set to 90° or 140° to yield a constant separation between e3, SH-CM and SH-EL. Our results showed that the limbs' rotational axis coincide with the SH-EL axis across velocity conditions, although higher variability was seen at higher velocity. This was true for both the dominant and the non-dominant arm. Together, the results showed that cognitive instruction prevented a velocity-dependent rotation axis change towards e3 and/or SH-CM, as proposed in the minimum inertia principle.
    No preview · Article · Jan 2016 · Journal of applied biomechanics
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the article by Caetano FG, et al, "Characterization of the Sprint and Repeated-Sprint Sequences Performed by Professional Futsal Players, According to Playing Position, During Official Matches," in the J Appl Biomech, 31(6), pp. 423-429, http://dx.doi.org/10.1123/jab.2014-0159, the second author's name was incorrectly listed as Murilo José de Oliveira. The second author's name should have been listed as Murilo José de Oliveira Bueno.
    No preview · Article · Jan 2016 · Journal of applied biomechanics
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    ABSTRACT: Evidence suggests reports describing the reliability of leg-spring (kleg) and joint stiffness (kjoint) measures are contaminated by artifact originating from digital filtering procedures. Additionally, the intra-day reliability of kleg and kjoint requires investigation. This study examined the effects of experimental procedures on the inter- and intra-day reliability of kleg and kjoint. Thirty-two participants completed two trials of single-legged hopping at 1.5, 2.2 and 3.0 Hz at the same time of day across three days. On the final test day a fourth experimental bout took place six hours before or after participants' typical testing time. Kinematic and kinetic data were collected throughout. Stiffness was calculated using models of kleg and kjoint. Classifications of measurement agreement were established using thresholds for absolute and relative reliability statistics. Results illustrated that kleg and kankle exhibited strong agreement. In contrast, kknee and khip demonstrated weak-to-moderate consistency. Results suggest limits in kjoint reliability persist despite employment of appropriate filtering procedures. Furthermore, diurnal fluctuations in lower-limb muscle-tendon stiffness exhibit little effect on intra-day reliability. The present findings support the existence of kleg as an attractor state during hopping, achieved through fluctuations in kjoint variables. Limits to kjoint reliability appear to represent biological function rather than measurement artifact.
    No preview · Article · Jan 2016 · Journal of applied biomechanics
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    ABSTRACT: The purpose of this study was to investigate the effects of prolonged high intensity running on impact accelerations in trained runners. Thirteen male distance runners completed two 20-minute treadmill runs at speeds corresponding to 95% of onset of blood lactate accumulation. Leg and head accelerations were collected for 20 s every 4th minute. Rating of perceived exertion (RPE) scores were recorded during the 3rd and last minute of each run. RPE responses increased (p < .001) from the start (11.8 ± 0.9, moderate intensity) of the first run to the end (17.7 ±1.5; very hard) of the second run. Runners maintained their leg impact acceleration, impact attenuation, stride length and stride frequency characteristics with prolonged run duration. However, a small (0.11-0.14g) but significant increase (p < .001) in head impact accelerations were observed at the end of both first and second runs. It was concluded that trained runners are able to control leg impact accelerations during sustained high-intensity running. Alongside the substantial increases in perceived exertion levels, running mechanics and frequency domain impact attenuation levels remained constant. This suggests that the present trained runners are able to cope from a mechanical perspective despite an increased physiological demand.
    No preview · Article · Dec 2015 · Journal of applied biomechanics
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    ABSTRACT: Increased knee flexion and valgus angles and decreased impact ground reaction forces (GRF) are associated with decreased anterior cruciate ligament (ACL) loading during landing. The purpose of this study was to determine the effect of tactile feedback provided by a simple device on knee flexion and valgus angles and impact GRF during landing. Kinematic and kinetic data were collected when 28 participants performed baseline, training, and evaluation jump-landing trials. During the training trials, the device was placed on participants' shank so that participants received tactile feedback when they reached a peak knee flexion angle of a minimum of 100 degrees. During the evaluation trials, participants were instructed to maintain the movement patterns as they learned from the training trials. Participants demonstrated significantly (p < 0.008) increased peak knee flexion angles, knee flexion range of motion during early-landing (first 100 ms of landing), and stance time, decreased impact posterior and vertical GRF during early-landing and jump height, and similar knee valgus angles during the evaluation trails compared with the baseline trials. Immediately following training with tactile feedback, participants demonstrated landing patterns associated with decreased ACL loading. This device may have advantages in application because it provides low-cost, independent, and real-time feedback.
    No preview · Article · Dec 2015 · Journal of applied biomechanics
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    ABSTRACT: Balance assessments could render useful objective performance measures to evaluate the efficacy of low back surgeries, yet these assessments have not been collectively examined to determine longitudinal sensitivity across surgical interventions. The purpose of the review was to determine sensitivity of balance measurements for disparate spinal disorders after surgical intervention. We searched PubMed, Embase, Scopus, the Cochrane Library, Web of Science, and CINAHL. Articles were selected based on: 1) sample consisted of low back disorder individuals; and 2) balance measurements were obtained both pre- and post-surgery. Most of the articles addressed two specific low back disorders: 1) adolescent idiopathic scoliosis/spinal fusion; and 2) disc herniation/decompression surgery. For scoliosis patients, body sway increased (14-97%) immediately following surgery but gradually reduced (1-33%) approaching the one year post-spinal fusion assessment. For patients with disc herniation, sway range, sway velocity, sway area, and sway variability all decreased (19-42%) immediately post-surgery. Balance assessments for adolescents with idiopathic scoliosis who underwent surgical intervention should be performed with visual occlusion, focus on time domain parameters, and evaluated with longer follow-up times. Patients with disc herniation who underwent decompression surgery should have balance assessments with visual deprivation, test conditions specifically addressing hip strategy, and correlation with pain.
    No preview · Article · Dec 2015 · Journal of applied biomechanics
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    ABSTRACT: The purpose of this study was to validate measures of vertical oscillation (VO) and ground contact time (GCT) derived from a commercially available, torso-mounted accelerometer compared to single marker kinematics and kinetic ground reaction force (GRF) data. Twenty-two semi-elite runners ran on an instrumented treadmill while GRF data (1000 Hz) and 3-dimensional kinematics (200 Hz) were collected for 60 seconds across 5 different running speeds ranging from 2.7-3.9 m/s. Measurement agreement was assessed by Bland-Altman plots with 95% limits of agreement and by concordance correlation coefficient (CCC). The accelerometer had excellent CCC agreement (>0.97) with marker kinematics, but only moderate agreement, and overestimated measures between 16.27 mm - 17.56 mm, compared to GRF VO measures. The GCT measures from the accelerometer had very good CCC agreement with GRF data, with less than 6 msec of mean bias at higher speeds. These results indicate a torso-mounted accelerometer provides valid and accurate measures of torso-segment VO, but both a marker placed on the torso and the accelerometer yield systematic overestimations of center of mass VO. Measures of GCT from the accelerometer are valid when compared with GRF data, particularly at faster running speeds.
    No preview · Article · Dec 2015 · Journal of applied biomechanics
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    ABSTRACT: A dynamic finite element model of a shod running footstrike was developed and driven with six degree of freedom foot segment kinematics determined from a motion capture running trial. Quadratic tetrahedral elements were used to mesh the footwear components with material models determined from appropriate mechanical tests. Model outputs were compared to experimental high speed video (HSV) footage, vertical ground reaction force (GRF) and centre of pressure (COP) excursion to determine whether such an approach is appropriate for the development of athletic footwear. Although unquantified, good visual agreement to the HSV footage was observed but significant discrepancies were found between the model and experimental GRF and COP readings (9% and 61% of model readings outside of the mean experimental reading ± 2 standard deviations respectively). Model output was also found to be highly sensitive to input kinematics with a 120% increase in maximum GRF observed when translating the force platform 2 mm vertically. Whilst representing an alternative approach to existing dynamic finite elements footstrike models, loading highly representative of an experimental trial was not found to be achievable when employing exclusively kinematic boundary conditions. This significantly limits the usefulness of employing such an approach in the footwear development process.
    No preview · Article · Dec 2015 · Journal of applied biomechanics
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    ABSTRACT: When reporting a subject's mean movement pattern, it is important to ensure that reported values are representative of the subject's typical movement. Whilst previous studies have utilized the mean of three trials, scientific justification of this number is lacking. One approach is to determine statistically how many trials are required to achieve a representative mean. This study compared four methods of calculating the number of trials required in a hopping movement to achieve a representative mean. 15 males completed 15 trials of a lateral hurdle hop. Range of motion at the trunk, pelvis, hip, knee and ankle, in addition to peak moments for the latter three joints were examined. The number of trials required was computed using a peak intraclass correlation coefficient method, sequential analysis with a bandwidth of acceptable variance in the mean, and a novel method based on the standard error of measurement (SEMind). The number of trials required across all variables ranged from 2 to 12 depending on method, joint and anatomical plane. The authors advocate the SEMind method as it demonstrated fewer limitations than the other methods. Using the SEMind the required number of trials for a representative mean during the lateral hurdle hop is 6.
    No preview · Article · Dec 2015 · Journal of applied biomechanics
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    ABSTRACT: Although the lift force (FL) 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 FL and spin for different types of pitches thrown by collegiate pitchers. Four high-speed video cameras were used to record flight trajectory and spin for seven types of pitches. A total of 75 pitches were analyzed. The linear kinematics of the ball was determined at 0.008sintervals during the flight, and the resultant fluid force acting on the ball was calculated with an inverse dynamics approach. The initial angular velocity of the ball was determined using a custom-made apparatus. Equations were derived to estimate the FL using the effective spin parameter (ESp) which is a spin parameter calculated using a component of angular velocity of the ball with the exception of the gyro-component. The results indicate that FL could be accurately explained from ESp and also that seam orientation (four-seam or two-seam) did not produce a uniform effect on estimating FL from ESp.
    No preview · Article · Nov 2015 · Journal of applied biomechanics
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    ABSTRACT: Biomechanical evidence is needed to determine to what extent the use of a mobility assistance dog (ADMob) may minimize mechanical loads and muscular demands at the upper limbs among manual wheelchair users. This study quantified and compared upper limb efforts when propelling up a ramp with and without a ADMob among manual wheelchair users. Ten manual wheelchair users with a spinal cord injury who own a ADMob ascended a ramp with and without their ADMob. The movements of the wheelchair and upper limbs were captured and the forces applied at the pushrims were recorded to compute shoulder mechanical loading. Muscular demand of the pectoralis major, anterior deltoid, biceps and the triceps was normalized against the maximum electromyographic values. The traction provided by the ADMob significantly reduced the total force applied at the pushrim and its tangential component while the mechanical effectiveness remained similar. The traction provided by the ADMob also resulted in a significant reduction in shoulder flexion, internal rotation and adduction moments. The muscular demands of the anterior deltoid, pectoralis major, biceps, and triceps were significantly reduced by the traction provided by the ADMob. The use of ADMob represents a promising mobility assistive technology alternative to minimize upper limb mechanical loads and muscular demands and optimize performance during wheelchair ramp ascent.
    No preview · Article · Nov 2015 · Journal of applied biomechanics
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    ABSTRACT: The variety of experimental setups used during in vitro testing of distal radius fracture treatments impairs inter-study comparison and might lead to contradictory results. Setups particularly differ with respect to their boundary conditions, but the influence on the experimental outcome is unknown. The aim of this biomechanical study was to investigate the effects of two common boundary conditions on the biomechanical properties of an extra-articular distal radius fracture treated using volar plate osteosynthesis. Uniaxial compression tests were performed on ten synthetic radii that were randomized into a proximally constrained group (ProxConst) or movable group (ProxMove). The load was applied distally through a ball joint to enable distal fragment rotation. A significantly larger (ProxConst vs. ProxMove) stiffness (671.6 ± 118.9 vs. 259.6 ± 49.4 N·mm-1), elastic limit (186.2 ± 24.4 vs. 75.4 ± 20.2 N) and failure load (504.9 ± 142.5 vs. 200.7 ± 49.0 N) were found for the proximally constrained group. The residual tilt did not differ significantly between the two groups. We concluded that the boundary conditions have a profound impact on the experimental outcome and should be considered more carefully in both study design and inter-study comparison.
    No preview · Article · Nov 2015 · Journal of applied biomechanics