PMID- 26240646
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20150804
LR  - 20200929
IS  - 1640-5544 (Print)
IS  - 1899-7562 (Electronic)
IS  - 1640-5544 (Linking)
VI  - 46
DP  - 2015 Jun 27
TI  - Effect of Performance Speed on Trunk Movement Control During the Curl-Up 
      Exercise.
PG  - 29-37
LID - 10.1515/hukin-2015-0031 [doi]
AB  - Trunk exercise speed has significant effects on neuro-mechanical demands; 
      however, the influence of a variety of exercise speeds on motor control of the 
      trunk displacement remains unknown. The aim of this study was to assess the 
      effect of performance speed on trunk motion control during the curl-up exercise 
      by analyzing the kinematic variance about the sagittal trajectory. Seventeen 
      subjects volunteered to perform curl-ups at different cadences controlled by a 
      metronome. Standard deviation (SD) and range (RG) of shoulder girdle 
      medial-lateral displacement (SGML) and detrended fluctuation analysis (DFA) of 
      SGML were calculated to examine linear variability and long range autocorrelation 
      of medial-lateral upper trunk displacements, respectively. In addition, SD, RG 
      and DFA of centre of pressure medial-lateral displacement (COPML) were performed 
      to analyze the behavior of the motor system while controlling trunk displacement. 
      Although SD and RG of COPML increased as speed increased, the curl-up cadence did 
      not have significant effects on SD and RG of SGML. These results suggest that 
      although high speed curl-ups challenged participants' ability to carry out 
      medial-lateral adjustments, an increase of performance speed did not modify the 
      linear variability about the sagittal trajectory. Regarding DFA, the scaling 
      exponent alpha of SGML and COPML was higher for the fastest movements, mainly in long 
      term fluctuations. Therefore, to maintain the target trajectory, participants 
      used different strategies depending on performance speed. This is to say, there 
      were less trajectory changes when participants performed the fastest exercises.
FAU - Barbado, David
AU  - Barbado D
AD  - Sports Research Centre, Miguel Hernandez University of Elche, Elche (Alicante), 
      Spain.
FAU - Elvira, Jose Luis L
AU  - Elvira JL
AD  - Sports Research Centre, Miguel Hernandez University of Elche, Elche (Alicante), 
      Spain.
FAU - Moreno, Francisco J
AU  - Moreno FJ
AD  - Sports Research Centre, Miguel Hernandez University of Elche, Elche (Alicante), 
      Spain.
FAU - Vera-Garcia, Francisco J
AU  - Vera-Garcia FJ
AD  - Sports Research Centre, Miguel Hernandez University of Elche, Elche (Alicante), 
      Spain.
LA  - eng
PT  - Journal Article
DEP - 20150710
PL  - Poland
TA  - J Hum Kinet
JT  - Journal of human kinetics
JID - 101513031
PMC - PMC4519219
OTO - NOTNLM
OT  - abdominal musculature
OT  - conditioning exercise
OT  - motor control
OT  - spine biomechanics
OT  - velocity
EDAT- 2015/08/05 06:00
MHDA- 2015/08/05 06:01
PMCR- 2015/07/10
CRDT- 2015/08/05 06:00
PHST- 2015/08/05 06:00 [entrez]
PHST- 2015/08/05 06:00 [pubmed]
PHST- 2015/08/05 06:01 [medline]
PHST- 2015/07/10 00:00 [pmc-release]
AID - jhk-46-29 [pii]
AID - 10.1515/hukin-2015-0031 [doi]
PST - epublish
SO  - J Hum Kinet. 2015 Jul 10;46:29-37. doi: 10.1515/hukin-2015-0031. eCollection 2015 
      Jun 27.