Abstract:
:The aim of this study was to build an accurate computer-based model to study the water flow and drag force characteristics around and acting upon the human body while in a submerged streamlined position. Comparisons of total drag force were performed between an actual swimmer, a virtual computational fluid dynamics (CFD) model of the swimmer, and an actual mannequin based on the virtual model. Drag forces were determined for velocities between 1.5 m/s and 2.25 m/s (representative of the velocities demonstrated in elite competition). The drag forces calculated from the virtual model using CFD were found to be within 4% of the experimentally determined values for the mannequin. The mannequin drag was found to be 18% less than the drag of the swimmer at each velocity examined. This study has determined the accuracy of using CFD for the analysis of the hydrodynamics of swimming and has allowed for the improved understanding of the relative contributions of various forms of drag to the total drag force experienced by submerged swimmers.
journal_name
Sports Biomechjournal_title
Sports biomechanicsauthors
Bixler B,Pease D,Fairhurst Fdoi
10.1080/14763140601058581subject
Has Abstractpub_date
2007-01-01 00:00:00pages
81-98issue
1eissn
1476-3141issn
1752-6116journal_volume
6pub_type
杂志文章abstract::Drag is one of the major factors that influences kayaking performance. To focus on the drag of the kayak's hull shape and the paddlers' weight per se, the passive drag (Dp) was measured on a flat-water sprint course for one paddler with added weights. Dp was measured by an electromechanical towing device using a load ...
journal_title:Sports biomechanics
pub_type: 杂志文章
doi:10.1080/14763141.2015.1090475
更新日期:2015-01-01 00:00:00
abstract::Anticipation of ground reaction force (GRF) in depth jumping requires multisensory integration of exteroceptive, vestibular, and proprioceptive inputs. Vision contributes to the anticipation of GRF in drop landings and may influence depth jump performance when disrupted. The purpose of this investigation was to evalua...
journal_title:Sports biomechanics
pub_type: 杂志文章
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更新日期:2020-06-08 00:00:00
abstract::The biomechanics of the golf swing have received considerable attention in previous research. However, existing studies have focused on young athletes, while the kinematics of older golfers remain poorly documented. This study presents kinematic data for healthy senior golfers during swings performed with a driver and...
journal_title:Sports biomechanics
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更新日期:2019-08-27 00:00:00
abstract::The topspin tennis forehand drive has become a feature of modern game; yet, as compared to the serve, there has been little research analysing its kinematics. This is surprising given that there is considerably more variation in the execution of the topspin forehand. Our study is the first to examine the amplitude of ...
journal_title:Sports biomechanics
pub_type: 杂志文章
doi:10.1080/14763141.2018.1461915
更新日期:2020-04-01 00:00:00
abstract::The aim of this study was to determine whether elite 1500-m runners differ in their running kinematics from national-standard 1500-m runners. Six national-standard male runners (seasonal best: 3 min 49.2 s +/- 3.2 s) were assessed during the second lap of a 1500-m race. Their running kinematics was then compared with ...
journal_title:Sports biomechanics
pub_type: 杂志文章
doi:10.1080/14763140802632382
更新日期:2009-03-01 00:00:00
abstract::The purpose of this study was to establish the asymmetry and body wave characteristics related to shoulder, hip, knee, and ankle roll in unilateral arm amputee swimmers. Three unilateral arm amputee swimmers, including one Paralympic medallist (swimmer A), volunteered in this study. They conducted two 10-15 s front cr...
journal_title:Sports biomechanics
pub_type: 杂志文章
doi:10.1080/14763141.2019.1654536
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abstract::Kinematic studies have shown that fast bowlers have run-up velocities, based on centre of mass velocity calculations, which are comparable to elite javelin throwers. In this study, 34 fast bowlers (22.3 +/- 3.7 years) of premier grade level and above were tested using a three-dimensional (3-D) motion analysis system (...
journal_title:Sports biomechanics
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journal_title:Sports biomechanics
pub_type: 杂志文章
doi:10.1080/14763140608522871
更新日期:2006-07-01 00:00:00
abstract::An understanding of test-retest reliability is important for biomechanists, such as when assessing the longitudinal effect of training or equipment interventions. Our aim was to quantify the test-retest reliability of biomechanical variables measured during short-term maximal cycling. Fourteen track sprint cyclists pe...
journal_title:Sports biomechanics
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abstract::The purpose of present study was to investigate site differences in the effects of strain rate on tendon properties between knee extensors and plantar flexors. Elongation of tendon structures (L) in vastus lateralis and medial gastrocnemius muscles was measured by ultrasonography while participants performed ramp and ...
journal_title:Sports biomechanics
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abstract::No objective criteria exist for progressing athletes into cutting manoeuvres following ACL reconstruction (ACLR). The purpose of this study was to evaluate the relationship between a jump-cut task (JC) and the single-limb squat (SLS) in both ACLR and healthy controls. Case-control, laboratory based. Twenty-three parti...
journal_title:Sports biomechanics
pub_type: 杂志文章
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更新日期:2019-11-11 00:00:00
abstract::Despite many coaching and biomechanical texts describing how the kinematics of the club-head at impact lead to distance and accuracy of the ball flight, there is limited quantitative evidence supporting these assertions. The purpose of this study was to quantify the relationships between club-head kinematics and subse...
journal_title:Sports biomechanics
pub_type: 杂志文章
doi:10.1080/14763141.2013.772225
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abstract::Hip extensor strategy, specifically relative contribution of gluteus maximus versus hamstrings, will influence quadriceps effort required during squat exercise, as hamstrings and quadriceps co-contract at the knee. This research examined the effects of hip extensor strategy on quadriceps relative muscular effort (RME)...
journal_title:Sports biomechanics
pub_type: 杂志文章
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更新日期:2015-03-01 00:00:00
abstract::The purpose of the investigation was to study the relationship between thrust phase duration, ground reaction force, velocity increase after pole thrust and pole angles versus pole length during double poling in roller skiing. Seven male regional elite cross-country skiers volunteered as subjects for the study. The su...
journal_title:Sports biomechanics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1080/14763140308522820
更新日期:2003-07-01 00:00:00
abstract::This study investigated additional and traditional variables from isokinetic test of thigh muscles in soccer players across different field positions. One hundred and eighty-nine athletes performed maximal concentric isokinetic knee contractions on dominant (DL) and non-dominant limb (NDL) at 60º/s and 240º/s. The add...
journal_title:Sports biomechanics
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journal_title:Sports biomechanics
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更新日期:2014-11-01 00:00:00
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journal_title:Sports biomechanics
pub_type: 杂志文章
doi:10.1080/14763141.2016.1271448
更新日期:2018-06-01 00:00:00
abstract::This study looks at segmental movements in the jumping header from an optimization viewpoint. Investigations on the header so far have focused on head restriction in the movement but have not clarified how and to what extent body segments influence the performance of the skill. In the present study a biomechanical mod...
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abstract::The serve, as the most important stroke in tennis, has attracted considerable biomechanical interest. Of its component parts, the swing has received disproportionate research attention and consequently, little is known regarding toss kinematics. Indeed, the age-old question of whether players serve to different parts ...
journal_title:Sports biomechanics
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journal_title:Sports biomechanics
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journal_title:Sports biomechanics
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journal_title:Sports biomechanics
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journal_title:Sports biomechanics
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