Body Composition and Endocrine Adaptations to High-Altitude Trekking in the Himalayas

2019 ◽  
pp. 61-68 ◽  
Author(s):  
Gerardo Bosco ◽  
Antonio Paoli ◽  
Alex Rizzato ◽  
Giuseppe Marcolin ◽  
Maria Teresa Guagnano ◽  
...  
Keyword(s):  
Body Composition ◽  
High Altitude

Cardiopulmonary Response and Body Composition Changes after Prolonged High Altitude Exposure in Women

2011 ◽  
Vol 12 (4) ◽  
pp. 357-369 ◽  
Author(s):  
Andrea Ermolao ◽  
Marco Bergamin ◽  
Alberto Carlo Rossi ◽  
Luca Dalle Carbonare ◽  
Marco Zaccaria
Keyword(s):  
Body Composition ◽  
High Altitude ◽  
Altitude Exposure ◽  
Composition Changes

Alterations in Body Composition during High-Altitude Adaptation in the Himalayas

1978 ◽  
Vol 55 (3) ◽  
pp. 30P-30P
Author(s):  
T. C. Harvey ◽  
Helen James ◽  
A. D. Wright ◽  
D. R. Chettle ◽  
Keyword(s):  
Body Composition ◽  
High Altitude ◽  
High Altitude Adaptation ◽  
Altitude Adaptation

The Effects of High Altitude Trekking on Body Composition and Resting Metabolic Rate

1997 ◽  
Vol 29 (09) ◽  
pp. 458-461 ◽  
Author(s):  
F. Armellini ◽  
M. Zamboni ◽  
R. Robbi ◽  
T. Todesco ◽  
L. Bissoli ◽  
...  
Keyword(s):  
Body Composition ◽  
Metabolic Rate ◽  
High Altitude ◽  
Resting Metabolic Rate

scholarly journals Changes in appetite, energy intake, body composition, and circulating ghrelin constituents during an incremental trekking ascent to high altitude

2017 ◽  
Vol 117 (9) ◽  
pp. 1917-1928 ◽  
Author(s):  
Jamie Matu ◽  
John O’Hara ◽  
Neil Hill ◽  
Sarah Clarke ◽  
Christopher Boos ◽  
...  
Keyword(s):  
Body Composition ◽  
High Altitude ◽  
Energy Intake

Weight loss and changes in body composition at high altitude

1984 ◽  
Vol 57 (5) ◽  
pp. 1580-1585 ◽  
Author(s):  
S. J. Boyer ◽  
F. D. Blume
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
High Altitude ◽  
Body Fat ◽  
Moderate Altitude ◽  
Fat Absorption ◽  
Base Camp ◽  
Extreme Altitude ◽  
Muscle Catabolism ◽  
The Mean

Little is known about weight loss and changes in body composition at extreme altitude. As part of the American Medical Research Expedition to Everest in 1981 we measured body weight, body fat, limb circumferences, dietary intake, 72-h stool fats, and 5-h urine xylose excretion at various altitudes on Caucasian and Sherpa expedition members. In Caucasians, loss of body fat accounted for 70.5% of the mean 1.9-kg weight loss during the approach march at moderate altitude but for only 27.2% of the mean 4.0-kg weight loss during residence above 5,400 m. There was a significant proportionate decrease in arm and leg circumferences during residence above 5,400 m (1.5 and 2.9 cm, respectively). On the other hand, Sherpas, who arrived in Base Camp with half as much body fat as members (9.1% vs. 18.4%), maintained weight and limb circumferences during residence above 5,400 m. Fat absorption decreased 48.5% in three subjects, and xylose excretion decreased 24.3% in six of seven subjects at 6,300 m relative to sea level. It appears that muscle catabolism and malabsorption contribute significantly to weight loss at high altitude. High percent body fat does not protect against loss of muscle tissue. Sherpas do not appear susceptible to some of the changes affecting Caucasians.

Use of bioelectrical impedance to assess body composition changes at high altitude

1992 ◽  
Vol 72 (6) ◽  
pp. 2181-2187 ◽  
Author(s):  
C. S. Fulco ◽  
R. W. Hoyt ◽  
C. J. Baker-Fulco ◽  
J. Gonzalez ◽  
A. Cymerman
Keyword(s):  
Body Composition ◽  
High Altitude ◽  
Bioelectrical Impedance Analysis ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Fat Free Mass ◽  
Percent Body Fat ◽  
Independent Variables ◽  
Composition Changes ◽  
Assess Body Composition

This study determined the feasibility of using bioelectrical impedance analysis (BIA) to assess body composition alterations associated with body weight (BW) loss at high altitude. The BIA method was also evaluated relative to anthropometric assessments. Height, BW, BIA, skinfold (SF, 6 sites), and circumference (CIR, 5 sites) measurements were obtained from 16 males (23–35 yr) before, during, and after 16 days of residence at 3,700–4,300 m. Hydrostatic weighings (HW) were performed pre- and postaltitude. Results of 13 previously derived prediction equations using various combinations of height, BW, age, BIA, SF, or CIR measurements as independent variables to predict fat-free mass (FFM), fat mass (FM), and percent body fat (%Fat) were compared with HW. Mean BW decreased from 84.74 to 78.84 kg (P less than 0.01). As determined by HW, FFM decreased by 2.44 kg (P less than 0.01), FM by 3.46 kg (P less than 0.01), and %Fat by 3.02% (P less than 0.01). The BIA and SF methods overestimated the loss in FFM and underestimated the losses in FM and %Fat (P less than 0.01). Only the equations utilizing the CIR measurements did not differ from HW values for changes in FFM, FM, and %Fat. It was concluded that the BIA and SF methods were not acceptable for assessing body composition changes at altitude.

scholarly journals Body composition at high altitude: a randomized placebo-controlled trial of dietary carbohydrate supplementation

2009 ◽  
Vol 90 (5) ◽  
pp. 1193-1202 ◽  
Author(s):  
Jamie H Macdonald ◽  
Samuel J Oliver ◽  
Kelly Hillyer ◽  
Stephan Sanders ◽  
Zoe Smith ◽  
...  
Keyword(s):  
Body Composition ◽  
High Altitude ◽  
Controlled Trial ◽  
Dietary Carbohydrate ◽  
Carbohydrate Supplementation
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