Abstract
In an attempt to discover the upper limit of the steady state in the relatively localized muscular work mainly performed by the upper extremities, the author observed the fluctuation by time lapse in the gas metabolism and pulse rate under the work of various intensities employing a hand-pump type ergometer. The followings are the brief outline of the results thus obtained.
1) The upper limit of the steady state of the relatively localized muscular work, which most commonly seen and which is mainly performed with the upper extremities, lies within 3.0 and 3.5 in terms of the relative metabolic rate (R.M.R) .
2) In case there are no major variations in the thermal condition, the limit for the establishment of the steady state calculated from the increment in the pulse rate and that from the gas metabolism coincided almost exactly each other. Consequently, increment of pulse rate is considered to be sufficiently valid as the index to decide the upper limit of the steady state.
