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Titolo:
Impulse and movement space-time variability
Autore:
Kim, SJ; Carlton, LG; Liu, YT; Newell, KM;
Indirizzi:
Penn State Univ, Dept Kinesiol, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 l, University Pk, PA 16802 USA Seoul Natl Univ, Seoul 151, South Korea Seoul Natl Univ Seoul South Korea 151 Natl Univ, Seoul 151, South Korea Univ Illinois, Urbana, IL 61801 USA Univ Illinois Urbana IL USA 61801Univ Illinois, Urbana, IL 61801 USA
Titolo Testata:
JOURNAL OF MOTOR BEHAVIOR
fascicolo: 4, volume: 31, anno: 1999,
pagine: 341 - 357
SICI:
0022-2895(199912)31:4<341:IAMSV>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
AIMED MOVEMENTS; TIMING ACCURACY; VELOCITY; MODELS; SPEED;
Keywords:
movement speed-accuracy; spatial-temporal error; timing task;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, SJ Penn State Univ, Dept Kinesiol, 146 Recreat Bldg, University Pk, PA 16802 USA Penn State Univ 146 Recreat Bldg University Pk PA USA 16802 02 USA
Citazione:
S.J. Kim et al., "Impulse and movement space-time variability", J MOTOR BEH, 31(4), 1999, pp. 341-357

Abstract

In 3 experiments, the authors examined movement space-time variability as a function of the force-time properties of the initial impulse in a movement timing task. In the range of motion and movement time task conditions, peak force, initial rate of force, and force duration were manipulated eitherindependently or in combination across a range of parameter values. The findings showed that (a) impulse variability is predicted well by the elaboration of the isometric force variability scaling functions of L,. G. Carlton, K. Il. Kim, Y. T. Liu, and K. M. Newell (1993) to movement, and Co) the movement spatial and temporal outcome variability are complementary and wellpredicted by an equation treating the variance of force and time in Newton's 2nd law as independent random variables. Collectively, the findings suggest that movement outcome variability is the product of a coherent space-time function that is driven by the nonlinear scaling of the force-time properties of the initial impulse.

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Documento generato il 28/03/20 alle ore 10:49:02