PMID- 17603130
OWN - NLM
STAT- MEDLINE
DCOM- 20071231
LR  - 20191210
IS  - 1065-8483 (Print)
IS  - 1065-8483 (Linking)
VI  - 23
IP  - 2
DP  - 2007 May
TI  - Validation of power measurement techniques in dynamic lower body resistance 
      exercises.
PG  - 103-18
AB  - The objective of this study was to investigate the validity of power measurement 
      techniques utilizing various kinematic and kinetic devices during the jump squat 
      (JS), squat (S) and power clean (PC). Ten Division I male athletes were assessed 
      for power output across various intensities: 0, 12, 27, 42, 56, 71, and 85% of 
      one repetition maximum strength (1RM) in the JS and S and 30, 40, 50, 60, 70, 80, 
      and 90% of 1RM in the PC. During the execution of each lift, six different data 
      collection systems were utilized; (1) one linear position transducer (1-LPT); (2) 
      one linear position transducer with the system mass representing the force 
      (1-LPT+MASS); (3) two linear position transducers (2-LPT); (4) the force plate 
      (FP); (5) one linear position transducer and a force plate (1-LPT+FP); (6) two 
      linear position transducers and a force place (2-LPT+FP). Kinetic and kinematic 
      variables calculated using the six methodologies were compared. Vertical power, 
      force, and velocity differed significantly between 2-LPT+FP and 1-LPT, 
      1-LPT+MASS, 2-LPT, and FP methodologies across various intensities throughout the 
      JS, S, and PC. These differences affected the load-power relationship and 
      resulted in the transfer of the optimal load to a number of different 
      intensities. This examination clearly indicates that data collection and analysis 
      procedures influence the power output calculated as well as the load-power 
      relationship of dynamic lower body movements.
FAU - Cormie, Prue
AU  - Cormie P
AD  - Neuromuscular Laboratory, Department of Health, Leisure and Exercise Science, 
      Applachian State University, Boone, NC, USA.
FAU - McBride, Jeffrey M
AU  - McBride JM
FAU - McCaulley, Grant O
AU  - McCaulley GO
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Validation Study
PL  - United States
TA  - J Appl Biomech
JT  - Journal of applied biomechanics
JID - 9315240
SB  - IM
MH  - Adult
MH  - Biomechanical Phenomena/*methods
MH  - Energy Transfer/*physiology
MH  - Exercise Test/*methods
MH  - Humans
MH  - Leg/*physiology
MH  - Male
MH  - Monitoring, Physiologic/*methods
MH  - Physical Exertion/*physiology
MH  - Reproducibility of Results
MH  - Sensitivity and Specificity
MH  - *Task Performance and Analysis
EDAT- 2007/07/03 09:00
MHDA- 2008/01/01 09:00
CRDT- 2007/07/03 09:00
PHST- 2007/07/03 09:00 [pubmed]
PHST- 2008/01/01 09:00 [medline]
PHST- 2007/07/03 09:00 [entrez]
AID - 10.1123/jab.23.2.103 [doi]
PST - ppublish
SO  - J Appl Biomech. 2007 May;23(2):103-18. doi: 10.1123/jab.23.2.103.