Joint dynamics and intra-subject variability during countermovement jumps in children and adults

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Standard

Joint dynamics and intra-subject variability during countermovement jumps in children and adults. / Raffalt, Peter C; Alkjær, Tine; Simonsen, Erik B.

I: Journal of Biomechanics, Bind 49, Nr. 13, 06.09.2016, s. 2968–2974.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › fagfællebedømt

Harvard

Raffalt, PC, Alkjær, T & Simonsen, EB 2016, 'Joint dynamics and intra-subject variability during countermovement jumps in children and adults', Journal of Biomechanics, bind 49, nr. 13, s. 2968–2974. https://doi.org/10.1016/j.jbiomech.2016.07.010

APA

Raffalt, P. C., Alkjær, T., & Simonsen, E. B. (2016). Joint dynamics and intra-subject variability during countermovement jumps in children and adults. Journal of Biomechanics, 49(13), 2968–2974. https://doi.org/10.1016/j.jbiomech.2016.07.010

Vancouver

Raffalt PC, Alkjær T, Simonsen EB. Joint dynamics and intra-subject variability during countermovement jumps in children and adults. Journal of Biomechanics. 2016 sep. 6;49(13):2968–2974. https://doi.org/10.1016/j.jbiomech.2016.07.010

Author

Raffalt, Peter C ; Alkjær, Tine ; Simonsen, Erik B. / Joint dynamics and intra-subject variability during countermovement jumps in children and adults. I: Journal of Biomechanics. 2016 ; Bind 49, Nr. 13. s. 2968–2974.

Bibtex

@article{1d9f4dcb04bf4eb5afd0066423eca1d1,

title = "Joint dynamics and intra-subject variability during countermovement jumps in children and adults",

abstract = "The present study investigated lower limb joint work, lower limb joint energy transport and intra-subject variation of the joint dynamics during countermovement jumps in children and adults. Twelve healthy men and eleven healthy boys performed ten maximal countermovement jumps. Three dimensional kinematics and kinetics were recorded in synchrony. Hip, knee and ankle joint eccentric and concentric work, joint energy transfer, intra-subject variation of joint moment, joint power and joint moment components were calculated. The children had lower eccentric and concentric hip work and lower eccentric knee work but no group difference was observed in the concentric knee joint work and ankle joint work. Eccentric hip and knee joint energy transfer and concentric hip joint energy transfer were higher in adults. The children had higher intra-subject variation in the eccentric and concentric hip joint work, hip joint moment and hip and knee joint power. Higher intra-subject variation was observed in horizontal joint reaction force components for the children and higher intra-subject variation in the segment angular inertia components was observed for the adults. The joint dynamics of children during countermovement jumps were less efficient in producing proximal joint work, transferring energy through joint centres and characterized by a higher intra-subject variation.",

author = "Raffalt, {Peter C} and Tine Alkj{\ae}r and Simonsen, {Erik B}",

year = "2016",

month = sep,

day = "6",

doi = "10.1016/j.jbiomech.2016.07.010",

language = "English",

volume = "49",

pages = "2968–2974",

journal = "Journal of Biomechanics",

issn = "0021-9290",

publisher = "Pergamon Press",

number = "13",

}

RIS

TY - JOUR

T1 - Joint dynamics and intra-subject variability during countermovement jumps in children and adults

AU - Raffalt, Peter C

AU - Alkjær, Tine

AU - Simonsen, Erik B

PY - 2016/9/6

Y1 - 2016/9/6

N2 - The present study investigated lower limb joint work, lower limb joint energy transport and intra-subject variation of the joint dynamics during countermovement jumps in children and adults. Twelve healthy men and eleven healthy boys performed ten maximal countermovement jumps. Three dimensional kinematics and kinetics were recorded in synchrony. Hip, knee and ankle joint eccentric and concentric work, joint energy transfer, intra-subject variation of joint moment, joint power and joint moment components were calculated. The children had lower eccentric and concentric hip work and lower eccentric knee work but no group difference was observed in the concentric knee joint work and ankle joint work. Eccentric hip and knee joint energy transfer and concentric hip joint energy transfer were higher in adults. The children had higher intra-subject variation in the eccentric and concentric hip joint work, hip joint moment and hip and knee joint power. Higher intra-subject variation was observed in horizontal joint reaction force components for the children and higher intra-subject variation in the segment angular inertia components was observed for the adults. The joint dynamics of children during countermovement jumps were less efficient in producing proximal joint work, transferring energy through joint centres and characterized by a higher intra-subject variation.

AB - The present study investigated lower limb joint work, lower limb joint energy transport and intra-subject variation of the joint dynamics during countermovement jumps in children and adults. Twelve healthy men and eleven healthy boys performed ten maximal countermovement jumps. Three dimensional kinematics and kinetics were recorded in synchrony. Hip, knee and ankle joint eccentric and concentric work, joint energy transfer, intra-subject variation of joint moment, joint power and joint moment components were calculated. The children had lower eccentric and concentric hip work and lower eccentric knee work but no group difference was observed in the concentric knee joint work and ankle joint work. Eccentric hip and knee joint energy transfer and concentric hip joint energy transfer were higher in adults. The children had higher intra-subject variation in the eccentric and concentric hip joint work, hip joint moment and hip and knee joint power. Higher intra-subject variation was observed in horizontal joint reaction force components for the children and higher intra-subject variation in the segment angular inertia components was observed for the adults. The joint dynamics of children during countermovement jumps were less efficient in producing proximal joint work, transferring energy through joint centres and characterized by a higher intra-subject variation.

U2 - 10.1016/j.jbiomech.2016.07.010

DO - 10.1016/j.jbiomech.2016.07.010

M3 - Journal article

C2 - 27475845

VL - 49

SP - 2968

EP - 2974

JO - Journal of Biomechanics

JF - Journal of Biomechanics

SN - 0021-9290

IS - 13

ER -

ID: 164411084

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