Clarification of the 'symmetrical use of both hands' principle of motion economy

Andris Freivalds, Dongjoon Kong, Sowmya Murthy

Research output: Contribution to journalArticle

Abstract

Gilbreths' 'symmetrical use of both hands' principle of motion economy has been interpreted over the years as either both hands moving in a parallel manner, simultaneously in and simultaneously out, or both hands moving in an alternating pattern, one hand goes in while the other goes out. This principle was reexamined with 109 subjects performing the Both Hands task 16 times for each approach on a Purdue Pegboard. A learning curve was fit to each set of 16 trials, and then, various parameters of the curve tested for significance. Females were significantly faster (4%) than males, but the difference diminishes with more trials because of a faster rate of learning for males. Although, parallel motion was roughly 1% faster than alternating motion, the difference was not significant and was also diminishing with more trials. The result are supported by motor control studies for oscillating motions and lead to the conclusion that either motion is equally economical.

Original languageEnglish (US)
Pages (from-to)52-56
Number of pages5
JournalInternational Journal of Industrial Engineering : Theory Applications and Practice
Volume7
Issue number1
StatePublished - Jan 1 2000

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

Cite this

@article{c5c22a21aed14a63ad620146f6ea885d,
title = "Clarification of the 'symmetrical use of both hands' principle of motion economy",
abstract = "Gilbreths' 'symmetrical use of both hands' principle of motion economy has been interpreted over the years as either both hands moving in a parallel manner, simultaneously in and simultaneously out, or both hands moving in an alternating pattern, one hand goes in while the other goes out. This principle was reexamined with 109 subjects performing the Both Hands task 16 times for each approach on a Purdue Pegboard. A learning curve was fit to each set of 16 trials, and then, various parameters of the curve tested for significance. Females were significantly faster (4{\%}) than males, but the difference diminishes with more trials because of a faster rate of learning for males. Although, parallel motion was roughly 1{\%} faster than alternating motion, the difference was not significant and was also diminishing with more trials. The result are supported by motor control studies for oscillating motions and lead to the conclusion that either motion is equally economical.",
author = "Andris Freivalds and Dongjoon Kong and Sowmya Murthy",
year = "2000",
month = "1",
day = "1",
language = "English (US)",
volume = "7",
pages = "52--56",
journal = "International Journal of Industrial Engineering : Theory Applications and Practice",
issn = "1072-4761",
publisher = "University of Cincinnati",
number = "1",

}

Clarification of the 'symmetrical use of both hands' principle of motion economy. / Freivalds, Andris; Kong, Dongjoon; Murthy, Sowmya.

In: International Journal of Industrial Engineering : Theory Applications and Practice, Vol. 7, No. 1, 01.01.2000, p. 52-56.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Clarification of the 'symmetrical use of both hands' principle of motion economy

AU - Freivalds, Andris

AU - Kong, Dongjoon

AU - Murthy, Sowmya

PY - 2000/1/1

Y1 - 2000/1/1

N2 - Gilbreths' 'symmetrical use of both hands' principle of motion economy has been interpreted over the years as either both hands moving in a parallel manner, simultaneously in and simultaneously out, or both hands moving in an alternating pattern, one hand goes in while the other goes out. This principle was reexamined with 109 subjects performing the Both Hands task 16 times for each approach on a Purdue Pegboard. A learning curve was fit to each set of 16 trials, and then, various parameters of the curve tested for significance. Females were significantly faster (4%) than males, but the difference diminishes with more trials because of a faster rate of learning for males. Although, parallel motion was roughly 1% faster than alternating motion, the difference was not significant and was also diminishing with more trials. The result are supported by motor control studies for oscillating motions and lead to the conclusion that either motion is equally economical.

AB - Gilbreths' 'symmetrical use of both hands' principle of motion economy has been interpreted over the years as either both hands moving in a parallel manner, simultaneously in and simultaneously out, or both hands moving in an alternating pattern, one hand goes in while the other goes out. This principle was reexamined with 109 subjects performing the Both Hands task 16 times for each approach on a Purdue Pegboard. A learning curve was fit to each set of 16 trials, and then, various parameters of the curve tested for significance. Females were significantly faster (4%) than males, but the difference diminishes with more trials because of a faster rate of learning for males. Although, parallel motion was roughly 1% faster than alternating motion, the difference was not significant and was also diminishing with more trials. The result are supported by motor control studies for oscillating motions and lead to the conclusion that either motion is equally economical.

UR - http://www.scopus.com/inward/record.url?scp=0033700764&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033700764&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0033700764

VL - 7

SP - 52

EP - 56

JO - International Journal of Industrial Engineering : Theory Applications and Practice

JF - International Journal of Industrial Engineering : Theory Applications and Practice

SN - 1072-4761

IS - 1

ER -