Inter-joint coordination between hips and trunk during downswings: Effects on the clubhead speed

Choi, Ahnryul; Lee, In-Kwang; Choi, Mun-Taek; Mun, Joung Hwan

doi:10.1080/02640414.2016.1149603

Cited by 11 publications

(13 citation statements)

References 36 publications

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“…The golf swing during the downswing is executed through linear transition and angular rotation of the body 6,11,12,[39][40][41] . The former can be estimated with the COP in the M-L direction (COP Y ), and the latter with the shoulder and pelvis angles (A S and A P ).…”

Section: During Backswingmentioning

confidence: 99%

“…One of the main goals of golf swing is to maximise the club-head speed and accuracy, while taking advantage of force transfer 1,2 through the kinematic chain of the body segments [3][4][5] . A large number of existing studies on golf swing has helped identify the kinematic and kinetic variables that are important for golf swing performance such as trunk rotation [6][7][8] , lower body flexion 9,10 , and centre of mass/pressure movement [11][12][13][14] , which have revealed important underlying mechanisms of golf swing in relation to its control. However, our knowledge regarding how the initial state of the human control system, such as the address position, influences the swing behaviour is largely limited.…”

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confidence: 99%

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Small changes in ball position at address cause a chain effect in golf swing

Kim

Lee

et al. 2021

Sci Rep

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The purpose of this study was to investigate how the ball position along the mediolateral (M-L) direction of a golfer causes a chain effect in the ground reaction force, body segment and joint angles, and whole-body centre of mass during the golf swing. Twenty professional golfers were asked to complete five straight shots for each 5 different ball positions along M-L: 4.27 cm (ball diameter), 2.14 cm (ball radius), 0 cm (reference position at preferred ball position), – 2.14 cm, and – 4.27 cm, while their ground reaction force and body segment motions were captured. The dependant variables were calculated at 14 swing events from address to impact, and the differences between the ball positions were evaluated using Statistical Parametric Mapping. The left-sided ball positions at address showed a greater weight distribution on the left foot with a more open shoulder angle compared to the reference ball position, whereas the trend was reversed for the right-sided ball positions. These trends disappeared during the backswing and reappeared during the downswing. The whole-body centre of mass was also located towards the target for the left-sided ball positions throughout the golf swing compared to the reference ball position, whereas the trend was reversed for the right-sided ball positions. We have concluded that initial ball position at address can cause a series of chain effects throughout the golf swing.

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Section: During Backswingmentioning

confidence: 99%

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confidence: 99%

Small changes in ball position at address cause a chain effect in golf swing

Kim

Lee

et al. 2021

Sci Rep

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“…For example, a reduction in proximal function may increase injury risk by inappropriately controlling distal joint/segment displacements [ 3 ]. In particular, inter-joint coordination represents the relationship between adjacent two joints, while inter-segment coordination is associated with one joint alone [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Altered trunk and lower extremity movement coordination after neuromuscular training with and without external focus instruction: a randomized controlled trial

Sheikhi

Letafatkar

Thomas

et al. 2021

BMC Sports Sci Med Rehabil

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Background This study sought to determine the effects of a 6-week neuromuscular training (NMT) and NMT plus external focus (NMT plus EF) programs on trunk and lower extremity inter-segmental movement coordination in active individuals at risk of injury. Methods Forty-six active male athletes (controls = 15, NMT = 16, NMT plus EF = 15) participated (age = 23.26 ± 2.31 years) in this controlled, laboratory study. Three-dimensional kinematics were collected during a drop vertical jump (DVJ). A continuous relative phase (CRP) analysis quantified inter-segmental coordination of the: (1) thigh (flexion/extension)—shank (flexion/extension), (2) thigh (abduction/adduction)—shank (flexion/extension), (3) thigh (abduction/adduction)—trunk (flexion/extension), and (4) trunk (flexion/extension)—pelvis (posterior tilt/anterior tilt). Analysis of covariance compared biomechanical data between groups. Results After 6 weeks, inter-segmental coordination patterns were significantly different between the NMT and NMT plus EF groups (p < 0.05). No significant differences were observed in CRP for trunk-pelvis coupling comparing between NMT and NMT plus EF groups (p = 0.134), while significant differences were observed CRP angle of the thigh-shank, thigh-trunk couplings (p < 0.05). Conclusions Trunk and lower extremity movement coordination were more in-phase during DVJ in the NMT plus EF compared to NMT in active individuals at risk of anterior cruciate ligament injury. Trial registration: The protocol was prospectively registered at UMIN_RCT website with ID number: UMIN000035050, Date of provisional registration 2018/11/27.

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“…The majority of studies on golf performance biomechanics attempt to correlate kinematic and kinetic variables with swing speed . Modern statistics from PGA Tour events (strokes‐gained) indicate that increased driving distance can indeed positively affect performance .…”

Section: Introductionmentioning

confidence: 99%

Deliberate shot trajectories of highly skilled golfers: Associated changes and diversity in ground reaction forces

et al. 2018

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The approach shot is critical to golf performance, demanding precise control of distance, direction, and trajectory. Despite real-world importance, three-dimensional kinetic assessment of approach skill is lacking. We evaluated ground reaction forces (GRFs) of 6-iron approach shots of normal/stock (ST), high-draw (HD), and low-fade (LF) trajectories struck by 31 tournament professional and plus-handicap amateur golfers. A priori hypotheses were: HD would involve greater and earlier peak lead foot vertical GRF in the downswing (DS); and/or greater peak differences in DS anterior-posterior (AP) GRF, compared to ST and LF. Analysis of variance and post hoc testing supported our hypotheses. Peak lead foot vertical GRFs were 100.4%, 101.1%, and 103.8% of body-weight for ST, LF, and HD, respectively (P < 0.001). Peak vertical GRF occurred later in the DS when executing LF (P < 0.05). The peak difference in AP GRF was greater when executing HD (P < 0.001). Timing and magnitudes of GRF peaks varied widely between golfers. Even among accomplished golfers executing ST (their most reliable trajectory), standard deviations ranged from 18.7% to 72.7% of mean values. Between-golfer differences accounted for 89.9%-93.6% of the total variance. These data may encourage researchers and coaches to avoid rigid standards or generalized recommendations for GRF parameters as relates to performance.

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Inter-joint coordination between hips and trunk during downswings: Effects on the clubhead speed

Cited by 11 publications

References 36 publications

Small changes in ball position at address cause a chain effect in golf swing

Small changes in ball position at address cause a chain effect in golf swing

Altered trunk and lower extremity movement coordination after neuromuscular training with and without external focus instruction: a randomized controlled trial

Deliberate shot trajectories of highly skilled golfers: Associated changes and diversity in ground reaction forces

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