scholarly journals Basal Metabolic Rate Declines During Long-Distance Migratory Flight in Great Knots

The Condor ◽  
2001 ◽  
Vol 103 (4) ◽  
pp. 838-845 ◽  
Author(s):  
Phil F. Battley ◽  
Anne Dekinga ◽  
Maurine W. Dietz ◽  
Theunis Piersma ◽  
Sixian Tang ◽  
...  
Keyword(s):  
Body Composition ◽  
Metabolic Rate ◽  
Body Mass ◽  
Basal Metabolic Rate ◽  
The Body ◽  
Long Distance ◽  
Migratory Flight ◽  
Before And After ◽  
In Captivity ◽  
Para Determinar

Abstract Great Knots (Calidris tenuirostris) make one of the longest migratory flights in the avian world, flying almost 5500 km from Australia to China during northward migration. We measured basal metabolic rate (BMR) and body composition in birds before and after this flight and found that BMR decreased 42%. The mass-specific BMR based on lean mass decreased 33%. We also starved a group of pre-migratory Great Knots in captivity to determine whether they showed the same reduction in BMR without having undergone the hard work of flight. The captive birds showed a similar range and reduction of BMR values as the wild birds. Exponents of relationships between BMR and body mass in different comparisons were high, indicating large changes in BMR as a function of body mass. Analysis of the body composition of ten wild and three captive birds found that the flight muscle mass and intestine mass positively correlated with BMR. La Tasa Metabolica Basal Disminuye durante Vuelos Migratorios de Larga Distancia en Calidris tenuirostris Resumen. Calidris tenuirostris realiza uno de los vuelos migratorios más largos entre las aves, volando desde Australia hasta China durante la migración al norte. Medimos la tasa metabólica basal (TMB) y la composición corporal en aves antes y después del vuelo y encontramos que TMB se reduce en 42%. La TMB específica por masa, o sea la TMB corregida por masa magra, se redujo en 33%. También expusimos un grupo premigratorio de Calidris tenuirostris a un periodo de ayuno en cautiverio, para determinar si mostraban una tasa de reducción similar en la TMB sin haber soportado la dura tarea de volar. Las aves en cautiverio mostraron un rango y una reducción de los valores de la TMB similares a los de las aves en libertad. Los exponentes de la relación entre TMB y masa corporal en diferentes comparaciones fueron altos, indicando grandes cambios de la TMB en función de la masa corporal. El análisis de la composición corporal de diez aves libres y tres en cautiverio mostró que la masa de los músculos del vuelo y la masa de los intestinos esta positivamente correlacionada con la TMB.

Changes in Body Composition, Energy Metabolism, and Appetite-Regulating Hormones in Korean Professional Female Ballet Dancers Before and After Ballet Performance

2019 ◽  
Vol 23 (4) ◽  
pp. 173-180
Author(s):  
Soo Youn Kim ◽  
Jung Ho Cho ◽  
Ji Hyun Lee ◽  
Jae Hyun Jung
Keyword(s):  
Body Composition ◽  
Energy Balance ◽  
Energy Intake ◽  
Body Mass ◽  
Serum Levels ◽  
The Body ◽  
Blood Analysis ◽  
Ballet Dancers ◽  
Before And After ◽  
Dependent Sample

This study investigated changes in body composition, energy balance, and appetite-regulating hormones in professional female ballet dancers before and after 3 days of ballet performances. The subjects were 43 professional female ballet dancers in Korea. The mean age of the subjects was 25.9 ± 2.8 years, and they had over 13 years of ballet training on average. For body composition, the body mass index (BMI), percent body fat (%BF), lean body mass (LBM), and total body water (TBW) were evaluated. By way of blood analysis the serum levels of ghrelin, leptin, and insulin were examined. The calculations of energy intake (EI) and expenditure (EE) were based on journals that were self-recorded by the subjects for 14 days. For statistical analysis, the dependent sample t-test was applied (p < 0.05). The results showed no significant change in %BF, but the BMI, LBM, and TBW increased significantly in the post-performance measurement. Energy balance results demonstrated a significant increase in EI and decrease in EE. Both the ghrelin and leptin levels increased significantly. Although reported energy intake increased after performances, it remained below estimated energy requirements. Ballet dancers should be aware of the need to maintain energy balance in order to optimize their health and performance.

Basal metabolic rate and body composition at high altitudes

1961 ◽  
Vol 16 (3) ◽  
pp. 431-434 ◽  
Author(s):  
E. Picó;n-Reátegui
Keyword(s):  
Body Composition ◽  
Metabolic Rate ◽  
High Altitude ◽  
Sea Level ◽  
Basal Metabolic Rate ◽  
Technical Assistance ◽  
Cell Mass ◽  
The United States ◽  
The Body ◽  
Adult Males

Basal metabolic rate (BMR) and body composition were determined in 17 healthy adult males living at an altitude of 14,900 ft above sea level. Using body surface area as a standard of reference and following the criterion of Boothby et al. ( Am. J. Physiol. 116: 468, 1936), the BMR of the high-altitude resident fell within the limits considered normal for healthy adults at sea level. A comparison with the data obtained by investigators in the United States and in India shows that, when either fat-free body mass (FFM), cell mass (C), or cell solids (S) are the standard of reference, the BMR is higher in the high-altitude resident. The higher O2 consumption per kilogram of FFM, C, or S in the high-altitude resident seems to be one of the many mechanisms developed by the body in its process of adaptation to the low O2 tension. Note: (With the Technical Assistance of Melquiades Huayna-Vera) Submitted on October 24, 1960

scholarly journals Basal Metabolic Rate Declines During Long-Distance Migratory Flight in Great Knots

The Condor ◽  
2001 ◽  
Vol 103 (4) ◽  
pp. 838 ◽  
Author(s):  
Phil F. Battley ◽  
Anne Dekinga ◽  
Maurine W. Dietz ◽  
Theunis Piersma ◽  
Sixian Tang ◽  
...  
Keyword(s):  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Long Distance ◽  
Migratory Flight

scholarly journals Energy balance at high altitude of 6,542 m

1994 ◽  
Vol 77 (2) ◽  
pp. 862-866 ◽  
Author(s):  
K. R. Westerterp ◽  
B. Kayser ◽  
L. Wouters ◽  
J. L. Le Trong ◽  
J. P. Richalet
Keyword(s):  
Body Composition ◽  
Energy Balance ◽  
Metabolic Rate ◽  
High Altitude ◽  
Body Mass ◽  
Basal Metabolic Rate ◽  
Gas Analysis ◽  
Activity Level ◽  
Energy Deficit ◽  
Bomb Calorimetry

Weight loss due to malnutrition and possibly intestinal malabsorption is a well-known phenomenon in high-altitude climbers. Up to approximately 5,000 m, energy balance may be attained and intestinal energy digestibility remains normal. To see whether 1) energy balance may also be attained at 6,542 m and, if not, 2) whether decreased energy digestibility would play a significant role in the energy deficit, energy intake (EI), energy expenditure, body composition, and energy digestibility of 10 subjects (4 women, 6 men; 27–44 yr) were assessed during a 21-day sojourn on the summit of Mt. Sajama, Bolivia (6,542 m). EI was measured during two 3-day intervals: EI1 (days 7–9) and EI2 (days 17–19). Total fecal energy loss during EI1 was calculated from fecal energy measured by bomb calorimetry. Average daily metabolic rate (ADMR) at altitude was measured in six subjects (2 women, 4 men) using doubly labeled water over a 10-day interval (days 9–19). Basal metabolic rate was measured before and after the expedition by respiratory gas analysis. Body composition was estimated from skinfolds and body mass before and during the altitude sojourn. Subjects were in negative energy balance throughout the observation period (EI1-ADMR = -2.9 +/- 1.8 MJ/day and EI2-ADMR = -2.3 +/- 1.8 MJ/day based on a gross energy digestibility of 95%). The activity level, expressed as ADMR to basal metabolic rate, was 1.56–2.39. The loss of fat mass (3.7 +/- 1.5 kg) represented 74 +/- 15% of the loss of body mass.(ABSTRACT TRUNCATED AT 250 WORDS)

scholarly journals Effects of Physical Activity on Body Composition and Basal Metabolic Rate of Taiwanese Aboriginal Children during Daily School Time

2009 ◽  
Vol 15 (1) ◽  
pp. 6-11
Author(s):  
T. H. TSAO ◽  
HSU C. H. HSU ◽  
Cheng Iuan HUANG ◽  
Huei Ying Huei Ying WU
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Vigorous Physical Activity ◽  
Bioelectrical Impedance ◽  
The Body ◽  
Activity Level ◽  
School Time ◽  
Aboriginal Children

LANGUAGE NOTE | Document text in English; abstract also in Chinese. Physical activity is one of the important factors for maintaining weight in adults and children, especially moderate-to- vigorous physical activity (MVPA). However, few studies have discussed about physical activity and body composition of aboriginal children, in spite of the differences existing between aboriginal and non-aboriginal children. As a result, the aim of this study was to investigate the effects of physical activity on the body composition and basal metabolic rate (BMR) of Taiwanese aboriginal children. Methods: Thirty boys (aged 10.7 ± 1.5 yr with a body-mass index (BMI) of 19.0 ± 4.2 kg/m2) and 26 girls (aged 10.0 ± 1.5 yr with a BMI of 18.2 ± 3.7 kg/m2) participated in this study. Bouchard's physical activity questionnaire was used to measure the physical activity level. The body composition and BMR were determined by a bioelectrical impedance analysis. Results: For all subjects, the period of school time, from leaving home to arriving back home, was totally 530 ± 38minutes. Children engaged in 353.8 ± 29.7 (66%), 121.9 ± 9.7 (23%), 37.1 ± 7.5 (7%), and 21.4 ± 7.0 (4%) minutes of sedentary, light, moderate, and vigorous levels of exercise, respectively. The accumulated time of MVPA was significantly higher for boys than for girls. In addition, after the statistical analysis, MVPA was significantly related to the percent body fat and BMR (-0.79 and 0.63; p < 0.05). Conclusions: Sufficient physical activity time, especially MVPA, benefits the maintenance of a normal BMI range for aboriginal children. 身體活動對維持成人與孩童的體重相當重要，特別是中度與激烈程度的身體活動。儘管原住民與非原住民孩童存在著差異，但原住民兒童身體活動與身體組成的關係卻很少被討論。因此，本研究目的探討身體活動對原住民兒童身體組成與基礎代謝率的影響。30位原住民男學童(年齡：10.7 ± 1.5歲，身體質量指數：19.0 ± 4.2 kg/m2)與26位原住民女學童(年齡： 10.0 ± 1.5歲，身體質量指數：18.2 ± 3.7 kg/m2)參與本研究。Bouchard身體活動問卷調查原住民學童不同程度的身體活動，並以生物電阻法原理測量身體組成與基礎代謝率。結果：在校時間，從離家至返家，總計為530 ± 38分鐘。在坐式、輕度、中度、激烈等不同程度的身體活動時間 > 分別為353.8 ± 29.7 (66%)、121.9 ± 9.7 (23%)、37.1 ± 7.5 (7%)、21.4 ± 7.0 (4%)分鐘。男原住民學童在學校累積的中度-激烈的身體活動時間顯著多於女原住民學童。再者，中度-激烈的身體活動時間與原住民學童的體脂肪百分比、基礎代謝率有顯著相關(079、0.63; p < 0.05)。結論：足夠的身體活動時間，特別是中度-激烈程度的身體活動，將有助於原住民學童維持身體質量指數在正常範圍。

Analysis of the Body Composition Index and Basal Metabolic Rate Through the Mobile Application eHealth-UTA

2018 ◽  
Author(s):  
Julio A. Mocha-Bonilla ◽  
Javier Sanchez Guerrero ◽  
Luis A. Jimenez ◽  
Marcelo Pilamunga Poveda ◽  
R.V. Barona-Onate ◽  
...  
Keyword(s):  
Body Composition ◽  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Mobile Application ◽  
The Body
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