Angular momentum regulation strategies for highly dynamic landing in Parkour

Maldonado, Galo; Bailly, François; Souères, Philippe; Watier, Bruno

doi:10.1080/10255842.2017.1382892

Cited by 11 publications

(12 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that after 20% of the landing, the vertical force is lowered. This control might be used to perform small postural adjustments thanks to the observed segment cancellation strategy 39 .…”

Section: Discussionmentioning

confidence: 99%

“…A study of the center of pressure (CoP) control through the modulation of A-P and medial-lateral (M-L) components of the GRFs provided this evidence 38 . The angular momentum derivative expressed at the CoM position appears also to be regulated during parkour landings 39 . Computing each segment’s contribution to the AMD, revealed that each pair of segments (right/left arms, right/left thighs, etc.)…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

On the coordination of highly dynamic human movements: an extension of the Uncontrolled Manifold approach applied to precision jump in parkour

Maldonado

Bailly

Souères

et al. 2018

Sci Rep

View full text Add to dashboard Cite

The human body generally has more degrees of freedom than necessary for generating a given movement. According to the motor abundance principle, this redundancy is beneficial as it provides the central nervous system with flexibility and robustness for the generation of movements. Under the hypothesis of the Uncontrolled Manifold, the additional degrees of freedom are used to produce motor solutions by reducing the variability that affects the motion performance across repetitions. In this paper, we present a general mathematical framework derived from robotics to formulate kinematic and dynamic tasks in human movement. On this basis, an extension of the Uncontrolled Manifold approach is introduced to deal with dynamic movements. This extension allows us to present a complex experimental application of the proposed framework to highly dynamic task variables in parkour movements. This experiment involves dynamic tasks expressed in terms of linear and angular momenta. The results show that the central nervous system is able to coordinate such skilled tasks which appear to be preferentially controlled and hierarchically organized. The proposed extension is promising for the study of motion generation in anthropomorphic systems and provides a formal description to investigate kinematics and dynamics tasks in human motions.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

On the coordination of highly dynamic human movements: an extension of the Uncontrolled Manifold approach applied to precision jump in parkour

Maldonado

Bailly

Souères

et al. 2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Both force-plates, embedded in the walkway, measured ground reaction forces (GRFs) and moments. A total of 49 retro-reflective spherical markers (14 mm diameter) were fixed on bony landmarks of all participants 4 , 17 : bilaterally on the first and fifth metatarsal heads, second toe tip, calcaneous, lateral and medial malleolus, anterior tibial tuberosity, lateral and medial femoral epicondyles, greater trochanter, posterior and anterior superior iliac spines, acromion, medial and lateral humeral epicondyles, ulnar and radial styloids, second and fifth metacarpal heads, and second fingertip; and a single marker on the processus xiphoideus, incisura jugularis, seventh cervical vertebra, tenth thoracic vertebra, sellion, occiput, vertex, and right and left temporal. A motion capture system equipped with 13 cameras (6 Bonita and 7 Vero Cameras; Vicon, UK) and 2 forces-plates were synchronized using analysis software to simultaneously collect kinematic and force-plate data at 200 Hz and 1000 Hz, respectively.…”

Section: Methodsmentioning

confidence: 99%

Segmental contribution to whole-body angular momentum during stepping in healthy young and old adults

Begue¹,

Peyrot

Lesport³

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Recent evidence suggests that during volitional stepping older adults control whole-body angular momentum (H) less effectively than younger adults, which may impose a greater challenge for balance control during this task in the elderly. This study investigated the influence of aging on the segment angular momenta and their contributions to H during stepping. Eighteen old and 15 young healthy adults were instructed to perform a series of stepping at two speed conditions: preferred and as fast as possible. Full-body kinematics were recorded to compute angular momenta of the trunk, arms and legs and their contributions to total absolute H on the entire stepping movement. Results indicated that older adults exhibited larger angular momenta of the trunk and legs in the sagittal plane, which contributed to a higher sagittal plane H range during stepping compared to young adults. Results also revealed that older adults had a greater trunk contribution and lower leg contribution to total absolute H in the sagittal plane compared to young adults, even though there was no difference in the other two planes. These results stress that age-related changes in H control during stepping arise as a result of changes in trunk and leg rotational dynamics.

show abstract

“…While parkour is mostly considered as being intentionally non-competitive, it is a physically [38,57] and skilled [58,59] demanding sport. As we will see, parkour requires accuracy and power regulation to prevent pain and injuries.…”

Section: Life Sciencesmentioning

confidence: 99%

How is parkour new and singular? A narrative review across miscellaneous academic fields.

PAGNON¹,

Faity²,

Maldonado³

et al. 2021

Preprint

View full text Add to dashboard Cite

Parkour is a growing sport that mostly involves jumping, vaulting over obstacles, and climbing in a non dedicated setting. The authors gathered all known relevant literature across miscellaneaous academic fields in order to define parkour with regards to other sports disciplines.Parkour is a lifestyle sport, and as such provides an alternative to mainstream ones, away from strict rules, standardized settings, and necessary competitions. Traceurs (parkour adepts) consider the city as a playground and as an outlet for their creativity, but they also have a strong taste for hard and individualized challenges. They usually train on non specific structures, at ground level. Although their social background is not clear, they are mostly young and male.Traceurs are stronger than recreational athletes, especially in eccentric exercises. However, their endurance skills may be below average. One of the core specificities of parkour is its precision constraint at landing, which turns a standing long jump into a precision jump, regulated on-line so as to prepare for landing. The running precision jump follows the same landing pattern, and its flight phase contrasts with long jump techniques. Injuries, which are not more frequent than in other sports, often occur at reception and on lower limb extremities. This risk is coped with targeting the landing area with the forefoot instead of letting the heel hit the ground like in gymnastics, or with rolling in order to dissipate the impact. Overall, parkour focuses on adaptability to new environments, which leads to specific techniques that have not yet been extensively addressed by the literature.

show abstract

Angular momentum regulation strategies for highly dynamic landing in Parkour

Cited by 11 publications

References 4 publications

On the coordination of highly dynamic human movements: an extension of the Uncontrolled Manifold approach applied to precision jump in parkour

On the coordination of highly dynamic human movements: an extension of the Uncontrolled Manifold approach applied to precision jump in parkour

Segmental contribution to whole-body angular momentum during stepping in healthy young and old adults

How is parkour new and singular? A narrative review across miscellaneous academic fields.

Contact Info

Product

Resources

About