Energy Expenditure and Fatigue During Simple Repetitive Tasks

Twenty-five male college students were measured for oxygen consumption during a simple stimulus-response task. Performance, as measured by reaction time and speed of arm movement, maintained a steady state except for a period of work decrement which had no relationship to initial speed or isotonic endurance. Oxygen consumption was maintained at a steady rate throughout the task. Fatigue, work decrement, and endurance were not reflected in oxygen consumption rates.

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The ‘Distraction Effect’ and Information Processing Complexity

Perception ◽

10.1068/p020079 ◽

1973 ◽

Vol 2 (1) ◽

pp. 79-89 ◽

Cited By ~ 6

Author(s):

Shirley Fisher

Keyword(s):

Information Processing ◽

Task Performance ◽

Single Channel ◽

Processing System ◽

Processing Load ◽

Distraction Effect ◽

Stimulus Response ◽

Serial Task ◽

Response Task ◽

Additional Explanation

It was found earlier that a transient ‘distraction effect’ was apparent when 80 dB noise bursts occurred at random during an on-going serial-response task. Experiments are now reported in which the information processing ‘load’ of the on-going serial task was varied (a) by the introduction of increased stimulus predictability, or (b) by the introduction of stimulus–response incompatibility. On the notion that the information processing system acts as a single channel, with increased stimulus predictability there should be a reduced distraction effect, because there would be more capacity available for responding to noise bursts whilst maintaining serial task performance; the reverse should be true for the case of increased stimulus–response incompatibility. Results suggested that the ‘distraction effect’ was reduced in both cases. An additional explanation suggesting that the information processing load of the task itself determined whether or not the noise bursts were providing effective rivalry with the task signals is considered.

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The combined effect of body size and temperature on oxygen consumption rates and the size‐dependency of preferred temperature in European perch Perca fluviatilis

Journal of Fish Biology ◽

10.1111/jfb.14807 ◽

2021 ◽

Vol 98 (6) ◽

pp. 1556-1556

Keyword(s):

Oxygen Consumption ◽

Body Size ◽

Perca Fluviatilis ◽

Combined Effect ◽

European Perch ◽

Preferred Temperature ◽

Size Dependency ◽

Perch Perca Fluviatilis ◽

Consumption Rates

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Light-addressable measurements of cellular oxygen consumption rates in microwell arrays based on phase-based phosphorescence lifetime detection

Biomicrofluidics ◽

10.1063/1.4772604 ◽

2012 ◽

Vol 6 (4) ◽

pp. 044118 ◽

Cited By ~ 13

Author(s):

Shih-Hao Huang ◽

Yu-Hsuan Hsu ◽

Chih-Wei Wu ◽

Chang-Jer Wu

Keyword(s):

Oxygen Consumption ◽

Phosphorescence Lifetime ◽

Consumption Rates ◽

Cellular Oxygen

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Oxygen consumption rates in subseafloor basaltic crust derived from a reaction transport model

Nature Communications ◽

10.1038/ncomms3539 ◽

2013 ◽

Vol 4 (1) ◽

Cited By ~ 61

Author(s):

Beth N. Orcutt ◽

C. Geoffrey Wheat ◽

Olivier Rouxel ◽

Samuel Hulme ◽

Katrina J. Edwards ◽

...

Keyword(s):

Oxygen Consumption ◽

Transport Model ◽

Consumption Rates ◽

Reaction Transport ◽

Basaltic Crust

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The Effects of Practice on Navigation Performance and Mental Workload with a Mirror-In-The-Sky Map

Proceedings of the Human Factors and Ergonomics Society Annual Meeting ◽

10.1177/1071181321651060 ◽

2021 ◽

Vol 65 (1) ◽

pp. 1546-1550

Author(s):

Holland M. Vasquez ◽

Justin G. Hollands ◽

Greg A. Jamieson

Keyword(s):

Task Performance ◽

Secondary Task ◽

Mental Workload ◽

Task Completion ◽

Practice Performance ◽

Global Ratings ◽

Detection Response ◽

Nasa Tlx ◽

Response Task ◽

Completion Times

Some previous research using a new augmented reality map display called Mirror-in-the-Sky (MitS) showed that performance was worse and mental workload (MWL) greater with MitS relative to a track-up map for navigation and wayfinding tasks. The purpose of the current study was to determine—for both MitS and track-up map—how much performance improves and MWL decreases with practice in a simple navigation task. We conducted a three-session experiment in which twenty participants completed a route following task in a virtual environment. Task completion times and collisions decreased, subjective MWL decreased, and secondary task performance improved with practice. The NASA-TLX Global ratings and Detection Response Task Hit Rates showed a larger decrease in MWL with MitS than the track-up map. Additionally, means for performance and workload measures showed that differences between the MitS and track-up map decreased in the first session. In later sessions the differences between the MitS and track-up map were negligible. As such, with practice performance and MWL may be comparable to a traditional track-up map.

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The Relation of Oxygen Consumption to Body Size and to Temperature in the Larvae of Chironomus Riparius Meigen

Journal of Experimental Biology ◽

10.1242/jeb.35.2.383 ◽

1958 ◽

Vol 35 (2) ◽

pp. 383-395

Author(s):

R. W. EDWARDS

Keyword(s):

Oxygen Consumption ◽

Body Size ◽

Dry Matter ◽

Larval Instar ◽

Weight Ratio ◽

Dry Weight ◽

Chironomus Riparius ◽

Consumption Rates ◽

Rate Of Oxygen Consumption ◽

Wet Weight

1. The oxygen consumption rates of 3rd- and 4th-instar larvae of Chironomus riparius have been measured at 10 and 20° C. using a constant-volume respirometer. 2. The oxygen consumption is approximately proportional to the 0.7 power of the dry weight: it is not proportional to the estimated surface area. 3. This relationship between oxygen consumption and dry weight is the same at 10 and at 20° C.. 4. The rate of oxygen consumption at 20° C. is greater than at 10° C. by a factor of 2.6. 5. During growth the percentage of dry matter of 4th-instar larvae increases from 10 to 16 and the specific gravity from 1.030 to 1.043. 6. The change in the dry weight/wet weight ratio during the 4 larval instar supports the theory of heterauxesis. 7. At 20° C., ‘summer’ larvae respire faster than ‘winter’ larvae.

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