Relationship between pulse rate and energy expenditure during graded work at different temperatures

Ergonomics ◽  
1979 ◽  
Vol 22 (11) ◽  
pp. 1207-1215 ◽  
Author(s):  
A.K. SENGUPTA ◽  
D.N. SARKAR ◽  
S. MUKHOPADHYAY ◽  
D.C. GOSWAMI
Keyword(s):  
Energy Expenditure ◽  
Pulse Rate ◽  
Different Temperatures

Prediction of daily energy expenditure from average pulse rate

1971 ◽  
Vol 24 (9) ◽  
pp. 1164-1170 ◽  
Author(s):  
Philip R. Payne ◽  
Erica F. Wheeler ◽  
Carmencita B. Salvosa
Keyword(s):  
Energy Expenditure ◽  
Pulse Rate ◽  
Daily Energy Expenditure ◽  
Daily Energy

scholarly journals No insulating effect of obesity

2016 ◽  
Vol 311 (1) ◽  
pp. E202-E213 ◽  
Author(s):  
Alexander W. Fischer ◽  
Robert I. Csikasz ◽  
Gabriella von Essen ◽  
Barbara Cannon ◽  
Jan Nedergaard
Keyword(s):  
Energy Expenditure ◽  
Thermal Insulation ◽  
Thermal Conductance ◽  
Metabolic Effects ◽  
Acclimation Temperature ◽  
Obese Mice ◽  
Weight Calculation ◽  
Different Temperatures ◽  
Fat Diets ◽  
Normal Laboratory

The development of obesity may be aggravated if obesity itself insulates against heat loss and thus diminishes the amount of food burnt for body temperature control. This would be particularly important under normal laboratory conditions where mice experience a chronic cold stress (at ≈20°C). We used Scholander plots (energy expenditure plotted against ambient temperature) to examine the insulation (thermal conductance) of mice, defined as the inverse of the slope of the Scholander curve at subthermoneutral temperatures. We verified the method by demonstrating that shaved mice possessed only half the insulation of nonshaved mice. We examined a series of obesity models [mice fed high-fat diets and kept at different temperatures, classical diet-induced obese mice, ob/ob mice, and obesity-prone (C57BL/6) vs. obesity-resistant (129S) mice]. We found that neither acclimation temperature nor any kind or degree of obesity affected the thermal insulation of the mice when analyzed at the whole mouse level or as energy expenditure per lean weight. Calculation per body weight erroneously implied increased insulation in obese mice. We conclude that, in contrast to what would be expected, obesity of any kind does not increase thermal insulation in mice, and therefore, it does not in itself aggravate the development of obesity. It may be discussed as to what degree of effect excess adipose tissue has on insulation in humans and especially whether significant metabolic effects are associated with insulation in humans.

scholarly journals Oxygen consumption and ammonia excretion of the searobin Prionotus punctatus (Scorpaeniformes, Triglidae) at two different temperatures

1999 ◽  
Vol 47 (2) ◽  
pp. 127-136 ◽  
Author(s):  
Vicente Gomes ◽  
Phan Van Ngan ◽  
Maria José de Arruda Campos Rocha Passos ◽  
Liliana Lucia Christina Forneris
Keyword(s):  
Experimental Data ◽  
Oxygen Consumption ◽  
Energy Expenditure ◽  
Energy Budget ◽  
Ammonia Excretion ◽  
South Atlantic ◽  
Weight Class ◽  
Metabolic Processes ◽  
Different Temperatures

Routine oxygen consumption and ammonia excretion were measured at 20ºC and 25ºC in the searobin Prionotus punctatus collected in Ubatuba region (22º30'S), SP, Brazil, in western South Atlantic, to investigate energy expenditure and losses through metabolic processes. IndividuaIs ranging from 1.00g to 88.47g and from 1.79g to 56.50g were used in experiments at 20ºC and 25ºC, respectively. At 20ºC and 25ºC, the averages of weight-specific oxygen consumption for the weight class of 1.00 - 10.00g, common to both temperatures, were 162.46µ 39.51 µ.10z/g/h and 200.47µ 92.46 µ.10z/g/h, respectively; for the weight class of 50.01 - 60.00g these values were 112.30 µ 22.84 µ.10z/g/h and 114.60 µ 20.36 µ.10zlg/h. At 20ºC and 25ºC, the averages of weight-specific ammonia excretion for the weight class of 1.00 to 1O.00g were 1.03 µ 0.37 fJ.M/g/h and 1.21 µ 0.65 µ.M/g/h, respectively; for the weight class of 50.01 -60.00g these values were 0.68 µ 0.13 fJ.M/g/h and 0.60 µ 0.22 µ.M/g/h. The energy budget for the species was calculated at both temperatures using the experimental data and a model for marine teleosts proposed in the literature.

scholarly journals Ergonomical Assessment on Hand Operated Chaff Cutter by Rural Women Workers

2021 ◽  
Vol 12 (5) ◽  
pp. 490-495
Author(s):  
Sathish Akki ◽  
◽  
Nirmala Bangi ◽  
Suresh Batta ◽  
Nagaraj Basani ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Energy Expenditure ◽  
Pulse Rate ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
Age Group ◽  
Female Workers ◽  
Expenditure Rate ◽  
Female Subjects

A study was conducted to ease the fodder cutting operations a commercially available hand chaff cutter (Sokhiya Agricultural Industries, Jaipur, India) during 2019–20 in the Department of Farm Machinery and Power Engineering at College of Agricultural Engineering, Sangareddy, Telangana, India. The assessment was done using with 3 different age group female workers who regularly feed to the animals to assess its suitability for workers of the southern region of India. The parameters used for the Ergonomical evaluation include machine operation at different forces are heart rate, pulse rate, oxygen consumption rate, and energy expenditure rate. The average heart rate for female subjects of P1, P2 and P3 was recorded before the operation is 79, 76 and 81 beats min-1 and after the operation is 109, 108 and 113 beats min-1 for various fodders. The average pulse rate for female subjects of P1, P2, and P3 was recorded before the operation is 62, 68, and 63 beats min-1 and after the operation is 80, 80, and 82 beats min-1 for various fodders. The average oxygen consumption rate and energy expenditure rate of female subjects of P1, P2 and P3 were found to be 0.61, 0.59 and 0.66 liter min-1, and 12.68, 12.36 and 13.74 KJ min-1 respectively after operation of chaff cutter. The physiological parameters are heart rate, pulse rate, oxygen consumption rate, and energy consumption rate increased more rapidly for all age group female workers after operation of chaff cutter with 3 various fodders.

The pulse rate and energy expenditure profile of underground coal miners in India

2004 ◽  
Vol 113 (3) ◽  
pp. 137-141 ◽  
Author(s):  
N. C. Dey ◽  
A. Samanta ◽  
R. Saha
Keyword(s):  
Energy Expenditure ◽  
Pulse Rate ◽  
Coal Miners

Energy expenditure of Saanen and Anglo-Nubian goats at different temperatures

2020 ◽  
Vol 193 ◽  
pp. 106256
Author(s):  
Ana Rebeca Castro Lima ◽  
Marcia Helena Machado da Rocha Fernandes ◽  
Raiza Felismino Silveira ◽  
Bruno Biagioli ◽  
Izabelle Auxiliadora Molina de Almeida Teixeira ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Different Temperatures

Pulse count as a measure of energy expenditure

1963 ◽  
Vol 18 (5) ◽  
pp. 994-996 ◽  
Author(s):  
M. S. Malhotra ◽  
J. Sen Gupta ◽  
R. M. Rai
Keyword(s):  
Steady State ◽  
Energy Expenditure ◽  
Pulse Rate ◽  
Bicycle Ergometer ◽  
The Other ◽  
Significant Difference ◽  
Predicted Values ◽  
Calorie Expenditure ◽  
Separate Regression ◽  
Pulse Count

Studies were made on seven subjects who were given different grades of exercise on a bicycle ergometer with a workload varying from 50 to 600 kg-m/min. Calorie expenditure during performance of various tasks was calculated by collecting the expired gases during the steady state. Pulse rate was also recorded during this period. To estimate the error in using pulse rate for measuring energy expenditure, the same subjects were given various field tasks such as marching, running, hopping, hammering, etc. During performance of these tasks energy expenditure and pulse rate were also measured, using the same techniques. Linear correlation was obtained between the pulse rate and the energy expenditure in all the subjects. There are two components of each curve, one for the pulse rates below 95 and the other for pulse rates above 95. A significant difference also was found in the coefficient of variation for different subjects, showing that separate regression lines are required for each of them. The percentage of error between observed and predicted values of energy expenditure for both the ranges of pulse counts varied from 0.3 to 4.7 and from 0.6 to 7.0, respectively. Submitted on July 30, 1962

scholarly journals Energetics of tent roosting in bats: the case of Ectophylla alba and Uroderma bilobatum (Chiroptera: Phyllostomidae).

2015 ◽  
Vol 97 (1) ◽  
pp. 246-252 ◽  
Author(s):  
Bernal Rodríguez-Herrera ◽  
Luis Víquez-R ◽  
Eugenia Cordero-Schmidt ◽  
Jean M. Sandoval ◽  
Armando Rodríguez-Durán
Keyword(s):  
Energy Expenditure ◽  
Heat Source ◽  
Ambient Temperature ◽  
Selective Pressure ◽  
Cocos Nucifera ◽  
Measured Temperature ◽  
Existing Structures ◽  
Roost Selection ◽  
Different Temperatures ◽  
Better Than

Abstract Roost selection in mammals is an important selective pressure, and many animals find shelter in previously existing structures. Furthermore, the microclimate of roosts is a crucial element for bat survival, and modified leaves are used for roosting (“tents”) by 22 species of bats. Our objective was to determine whether the inverted boat tents used by Ectophylla alba and pinnate tents used by Uroderma bilobatum provide energetic benefits. We measured the ambient temperature under modified and unmodified leaves (UMLs) of Heliconia imbricata and Cocos nucifera . We also measured temperature with (simulated bat presence) and without a heat source, and finally we measured bat energy expenditure at different temperatures. Our results show that when a heat source is present tents conserve heat better than a UML. The energy expenditure of E. alba and U. bilobatum increased up to 55% and 48%, respectively, with a decrease of temperature from 25°C to 20°C. We concluded that since the temperature at our study site drops below 25°C every night and remains that way until mid-morning, using a “tent” that maintains a temperature higher than ambient temperature, or close to 25°C degrees, provides an energetic advantage. La selección del refugio en los mamíferos es una presión selectiva importante y muchos animales encuentran refugio en estructuras ya existentes. El microclima del refugio es un elemento crucial para la sobrevivencia de los murciélagos. Las hojas modificadas (tiendas) son utilizadas por 22 especies de murciélagos. Nuestro objetivo era determinar si la tienda de bote invertido utilizada por Ectophylla alba y tiendas pinnadas utilizadas por Uroderma bilobatum brindan un beneficio energético a los murciélagos. Se midió la temperatura bajo hojas modificadas y no modificadas de Heliconia imbricata y Cocos nucifera . Además se midió la temperatura con fuente (simulando la presencia de murciélagos) y sin fuente de calor, finalmente se midió el gasto energético de los murciélagos a diferentes temperaturas. Los resultados muestran que cuando hay una fuente de calor presente, la tienda conserva el calor mejor que una hoja no modificada. El gasto energético de E. alba y U. bilobatum puede incrementarse hasta 55% y 48%, respectivamente, cuando la temperatura decrece entre 25°C y 20°C. Concluimos que como la temperatura en este sitio de estudio baja de los 25°C cada noche y hasta media mañana, utilizar una tienda que mantiene la temperatura arriba o cerca de los 25°C, provee una ventaja energética.

Physiological effects of continuous or intermittent work in the heat

1963 ◽  
Vol 18 (1) ◽  
pp. 57-60 ◽  
Author(s):  
A. R. Lind
Keyword(s):  
Weight Loss ◽  
Energy Expenditure ◽  
Pulse Rate ◽  
Rectal Temperature ◽  
High Rate ◽  
Temperature Pulse ◽  
Physiological Cost ◽  
Level Of Activity ◽  
Continuous Work ◽  
Comparison Of The Results

To define thermal limits for everyday work, a possible criterion which has been put forward described the climates (“prescriptive” climates) in which the level of bodily thermoregulation remained steady for a given rate of work. The present experiments were intended to determine the effect on results, obtained from brief exposures involving continuous work, of extending the exposure to a period of 8 hr and of presenting a given total energy expenditure (2,100 kcal) in different patterns of work and rest. During 8-hr exposures to three climates with dry and wet bulb temperatures of 29.4 and 23.9, 36.7 and 25.6, and 41.1 and 28.3 C, respectively, two subjects expended approximately 2,100 kcal in both 1) a nearly continuous level of activity and 2) intermittent bouts of much harder work interspaced by longer periods of rest. Evaluation and comparison of the results show that extension of exposures to periods of up to 8 hr per se did not demonstrably change the levels of rectal temperature, pulse rate, or weight loss found by the 2nd hr of exposure in the climates examined. Further, in prescriptive climates (in which the level of thermoregulation depends on the rate of work rather than on the environment), when the energy expenditure was 2,100 kcal in 8 hr, either continuously at a moderate rate, or intermittently at a high rate with compensatory rest pauses, the physiological cost was similar, as judged by rectal temperature, pulse rate, and weight loss. Submitted on June 15, 1962

Sign in / Sign up

Export Citation Format

Share Document