Intra-task variability of trunk coordination during a rate-controlled bipedal dance jump

Smith, Jo Armour; Siemienski, Adam; Popovich, John M.; Kulig, Kornelia

doi:10.1080/02640414.2011.624541

Cited by 15 publications

(4 citation statements)

References 28 publications

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“…Coordination patterns have been analyzed in various sporting and human movement contexts including rowing, swimming, golf, karate, gymnastics, and athletics in disciplines such as triple jump and dancing . In each of these instances, coordination was explored by examining relationships between kinematic variables such as body joint or segmental kinematics.…”

Section: Introductionmentioning

confidence: 99%

Force coordination strategies in on‐water single sculling: Are asymmetries related to better rowing performance?

Warmenhoven

Smith

Draper

et al. 2018

Scandinavian Med Sci Sports

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Asymmetries of the rowing stroke cycle have been assessed with reference to kinematics and foot-force measures in laboratory testing environments. It remains unclear how asymmetries in propulsive kinetic measures are related to on-water rowing performance. A new approach for the evaluation of both global and local asymmetries across the entire movement was used to assess the continuous role of asymmetries and whether these change according to the level of competitive representation. Twenty-seven highly skilled female rowers (national and international competition level), rowing at 32 strokes per minute in a single scull boat, were evaluated. A symmetry index (SI) and functional data analysis (FDA) techniques were applied to a continuous difference time-series, which described fluctuating asymmetry in propulsive pin forces for each rower. Univariate ANOVAs revealed that differences in asymmetries were present as a factor of competition level for the SI and results of FDA. International athletes were more likely to utilize an asymmetry strategy with increased stroke-side (port-side) force early in the drive phase and increased bow-side (starboard) force through the second half of the drive. This was likely the result of international performers customizing their movement strategies relative to known boat mechanical offsets. The first half of the drive phase was also found to be an adaptive part of the rowing stroke cycle, suggesting asymmetries may have a functional role in successful execution of movements during the rowing stroke.

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Section: Introductionmentioning

confidence: 99%

Force coordination strategies in on‐water single sculling: Are asymmetries related to better rowing performance?

Warmenhoven

Smith

Draper

et al. 2018

Scandinavian Med Sci Sports

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“…The idea is to understand the dynamic patterns of adjustment during sauté that are used by ballet dancers to maintain the desired turnout. This is based on studies like Smith et al 33 that have elucidated how trunk coordination occurs at different stages of a bipedal jump, and support the premise that variability in coordination may be a key to success in the movement of skilled dancers. Reeve et al 34 observed through the technique of vector co-ding that experienced dancers do not increase the variability of movement execution on different floors, showing that they adapt easily.…”

Section: Discussionmentioning

confidence: 70%

Sauté External Rotation in Beginner and Advanced Ballet Dancers Trained in Different Backgrounds The Turnout Paradigm

et al. 2018

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This study compared lower limb external rotation kinematic patterns during sautés in first position in beginners and experienced ballet dancers with various training backgrounds. The ability to attain a perfect turnout is traditionally thought to be a fundamental aspect of classical ballet, and turnout is identified in the literature as one of the leading causes of dance-related injuries and technical limitations among dancers. Twenty-eight ballet dancers of different technical levels and methods (three groups) were assessed. Coefficients of variation (CV), range of motion (ROM), and mean external rotation angles of hip, knee, and ankle in first position sauté were calculated. Differences among groups were tested with ANOVAs (Tukey's post hoc; p < 0.05). The hip mean external rotation values found during the jump were different between both experienced groups from different training backgrounds (p = 0.02). The inexperienced group presented a significantly greater hip external rotation CV compared to the experienced groups (p < 0.001). There were no differences between groups for values of external rotation at the knee and ankle. It is concluded that higher technical level dancers produce lower variability of hip external rotation while performing sauté in first position. Ballet training background also seems to influence the hip external rotation pattern. Moreover, the knee contributes decisively to turnout composition, not only the hip, as expected.

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“…4,10,32 Continuous methods of analyzing coordination, such as the vector coding method, quantify patterns of coordination between segments (intersegmental coordination) or joints (interjoint coordination) across the time series of a task. 26,27 Compared to single-joint and single-segment kinematics, these interjoint and intersegmental coordination analyses may have greater sensitivity to detect subtle kinematic differences between groups of subjects or between modes of gait with varying mechanical demands.…”

Section: T T Conclusionmentioning

confidence: 99%

“…The pattern of coordination for each interval of the time series can then be defined as inphase (both segments/joints moving in the same direction at the same time), antiphase (the 2 segments/joints moving in the opposite direction at the same time), proximal phase (motion occurring primarily in the proximal joint/ segment), or distal phase (motion occurring primarily in the distal joint/segment) using 45° bin widths (FIGURE 1A). 4,27 Inphase coordination is represented by coupling angles between 22.5° to 67.5° and 202.5° to 247.5°. Antiphase coordination is represented by coupling angles between 112.5° to 157.5° and 292.5° to 337.5°.…”

Section: Data Processingmentioning

confidence: 99%

The Influence of Hip Strength on Lower-Limb, Pelvis, and Trunk Kinematics and Coordination Patterns During Walking and Hopping in Healthy Women

Smith¹,

Popovich²,

Kulig³

2014

J Orthop Sports Phys Ther

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Musculoskeletal disorders of the lower limbs are often associated with poor hip muscle performance and altered kinematics during dynamic weight-bearing tasks. However, it is unclear whether altered lower-limb and pelvis/trunk motion, as a result of hip weakness, contributes to the development of musculoskeletal pathology and pain. 11,23 During the stance phase of activities such as walking, running, or hopping, the hip extensors and abductors play a complex role in control of the lower extremities, pelvis, and trunk. This includes deceleration of hip internal rotation and adduction 15 and maintenance of the equilibrium of the pelvis and trunk over the stance limb.7 Additionally, motion at the hip, pelvis, and trunk influences kinematics and kinetics at the knee. 11,23 Therefore, weakness of the hip musculature may be associated with altered kinematics at the knee, hip, pelvis, and trunk.A number of studies have examined the relationship between diminished hip muscle performance and kinematics in individuals with musculoskeletal dysfunction. For example, females with patellofemoral pain syndrome have lower maximum hip abductor and extensor torque and greater peak knee external rotation and hip adduction during the stance phase of running compared to healthy controls. 30,34 Similarly, hip osteoarthritis is associated with lower hip abductor strength, as well as greater pelvic drop and hip internal rotation, during the stance phase of walking.1,33 However, cross-sectional studies of patient popula-T T STUDY DESIGN: Cross-sectional laboratory study. T T OBJECTIVES:To compare peak lower-limb, pelvis, and trunk kinematics and interjoint and intersegmental coordination in women with strong and weak hip muscle performance. T T BACKGROUND:Persons with lower extremity musculoskeletal disorders often demonstrate a combination of weak hip musculature and altered kinematics during weight-bearing dynamic tasks. However, the association between hip strength and kinematics independent of pathology or pain is unclear. T T METHODS:Peak hip extensor and abductor torques were measured in 150 healthy young women. Of these, 10 fit the criteria for the strong group and 9 for the weak group, representing those with the strongest and weakest hip musculature, respectively, of the 150 screened individuals. Kinematics of the hip, knee, pelvis, and trunk were measured during the stance phases of walking and rate-controlled hopping. Hip/knee and pelvis/trunk coordination were calculated using the vector coding technique. T T RESULTS:There were no group differences in peak hip, knee, or pelvis kinematics. Participants in the weak group demonstrated greater trunk lateral bend toward the stance limb during hopping (P = .002, effect size [d] = 1.88). In the transverse plane, those in the weak group utilized less inphase coordination between the hip and the knee during walking (P = .036, d = 1.45) and more antiphase coordination between the hip and knee during hopping (P = .03, d = 1.47). T T CONCLUSION:In the absence of pain or pathology, poor h...

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Intra-task variability of trunk coordination during a rate-controlled bipedal dance jump

Cited by 15 publications

References 28 publications

Force coordination strategies in on‐water single sculling: Are asymmetries related to better rowing performance?

Force coordination strategies in on‐water single sculling: Are asymmetries related to better rowing performance?

Sauté External Rotation in Beginner and Advanced Ballet Dancers Trained in Different Backgrounds The Turnout Paradigm

The Influence of Hip Strength on Lower-Limb, Pelvis, and Trunk Kinematics and Coordination Patterns During Walking and Hopping in Healthy Women

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