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Intersegmental moment analysis characterizes the partial correspondence of jumping and jerking.
J Strength Cond Res. 2013 Jan; 27(1):89-100.JS

Abstract

The aim of this study was to quantify internal joint moments of the lower limb during vertical jumping and the weightlifting jerk to improve awareness of the control strategies and correspondence between these activities, and to facilitate understanding of the likely transfer of training effects. Athletic men completed maximal unloaded vertical jumps (n = 12) and explosive push jerks at 40 kg (n = 9). Kinematic data were collected using optical motion tracking and kinetic data via a force plate, both at 200 Hz. Joint moments were calculated using a previously described biomechanical model of the right lower limb. Peak moment results highlighted that sagittal plane control strategies differed between jumping and jerking (p < 0.05) with jerking being a knee dominant task in terms of peak moments as opposed to a more balanced knee and hip strategy in jumping and landing. Jumping and jerking exhibited proximal to distal joint involvement and landing was typically reversed. High variability was seen in nonsagittal moments at the hip and knee. Significant correlations were seen between jump height and hip and knee moments in jumping (p < 0.05). Although hip and knee moments were correlated between jumping and jerking (p < 0.05), joint moments in the jerk were not significantly correlated to jump height (p > 0.05) possibly indicating a limit to the direct transferability of jerk performance to jumping. Ankle joint moments were poorly related to jump performance (p > 0.05). Peak knee and hip moment generating capacity are important to vertical jump performance. The jerk appears to offer an effective strategy to overload joint moment generation in the knee relative to jumping. However, an absence of hip involvement would appear to make it a general, rather than specific, training modality in relation to jumping.

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Authors+Show Affiliations

Cleather DJ
School of Human Sciences, St. Mary's University College, Twickenham, United Kingdom.
Goodwin JE
No affiliation info available
Bull AM
No affiliation info available

MeSH

AdultAnalysis of VarianceBiomechanical PhenomenaHumansMaleMovementMuscle, SkeletalPsychomotor PerformanceWeight Lifting

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22362089

Citation

Cleather, Daniel J., et al. "Intersegmental Moment Analysis Characterizes the Partial Correspondence of Jumping and Jerking." Journal of Strength and Conditioning Research, vol. 27, no. 1, 2013, pp. 89-100.
Cleather DJ, Goodwin JE, Bull AM. Intersegmental moment analysis characterizes the partial correspondence of jumping and jerking. J Strength Cond Res. 2013;27(1):89-100.
Cleather, D. J., Goodwin, J. E., & Bull, A. M. (2013). Intersegmental moment analysis characterizes the partial correspondence of jumping and jerking. Journal of Strength and Conditioning Research, 27(1), 89-100. https://doi.org/10.1519/JSC.0b013e31825037ee
Cleather DJ, Goodwin JE, Bull AM. Intersegmental Moment Analysis Characterizes the Partial Correspondence of Jumping and Jerking. J Strength Cond Res. 2013;27(1):89-100. PubMed PMID: 22362089.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intersegmental moment analysis characterizes the partial correspondence of jumping and jerking. AU - Cleather,Daniel J, AU - Goodwin,Jon E, AU - Bull,Anthony M J, PY - 2012/2/25/entrez PY - 2012/3/1/pubmed PY - 2013/5/28/medline SP - 89 EP - 100 JF - Journal of strength and conditioning research JO - J Strength Cond Res VL - 27 IS - 1 N2 - The aim of this study was to quantify internal joint moments of the lower limb during vertical jumping and the weightlifting jerk to improve awareness of the control strategies and correspondence between these activities, and to facilitate understanding of the likely transfer of training effects. Athletic men completed maximal unloaded vertical jumps (n = 12) and explosive push jerks at 40 kg (n = 9). Kinematic data were collected using optical motion tracking and kinetic data via a force plate, both at 200 Hz. Joint moments were calculated using a previously described biomechanical model of the right lower limb. Peak moment results highlighted that sagittal plane control strategies differed between jumping and jerking (p < 0.05) with jerking being a knee dominant task in terms of peak moments as opposed to a more balanced knee and hip strategy in jumping and landing. Jumping and jerking exhibited proximal to distal joint involvement and landing was typically reversed. High variability was seen in nonsagittal moments at the hip and knee. Significant correlations were seen between jump height and hip and knee moments in jumping (p < 0.05). Although hip and knee moments were correlated between jumping and jerking (p < 0.05), joint moments in the jerk were not significantly correlated to jump height (p > 0.05) possibly indicating a limit to the direct transferability of jerk performance to jumping. Ankle joint moments were poorly related to jump performance (p > 0.05). Peak knee and hip moment generating capacity are important to vertical jump performance. The jerk appears to offer an effective strategy to overload joint moment generation in the knee relative to jumping. However, an absence of hip involvement would appear to make it a general, rather than specific, training modality in relation to jumping. SN - 1533-4287 UR - https://www.unboundmedicine.com/medline/citation/22362089/Intersegmental_moment_analysis_characterizes_the_partial_correspondence_of_jumping_and_jerking_ L2 - https://doi.org/10.1519/JSC.0b013e31825037ee DB - PRIME DP - Unbound Medicine ER -