Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects

ISSN:
1439-6327
Keywords:
Key words Dehydration ; Exercise ; Heat ; Hormones ; Rehydration
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract The objective of our study was to examine the effects of beverage content on hormone responses involved in fuel substrate metabolism (catecholamines, insulin and glucagon) in previously dehydrated subjects exercising at a moderate intensity in the heat. Six healthy men walked for 60-min on five occasions at 50% maximal oxygen uptake in a warm environment (dry bulb temperature 35 ± 0.2°C, relative humidity 20%). On each occasion, the subjects were dehydrated before exercise (loss of 2% body mass) by passive controlled hyperthermia, which led to a reduction in plasma volume (PV) of about −5% to −9%. In one session, the subjects exercised without rehydration (Dh). In the other sessions, four beverages (650 ml) were given just before the exercise: mineral water (W), a 60 g · l−1 glucose and 1.2 g · l−1 NaCl solution (GS), a 60 g · l−1 maltodextrin solution, and a 60 g · l−1 maltodextrin and 1.2 g · l−1 NaCl solution. Compared to Dh and W, carbohydrate supply with or without NaCl induced a higher glycaemia (P 〈 0.05), a reduced increase in plasma adrenaline concentration (P 〈 0.05) and a higher plasma insulin concentration (P 〈 0.05), which lowered plasma free fatty acids and glycerol concentrations (P 〈 0.05). The lesser increase in plasma noradrenaline concentrations observed during GS compared to Dh and W sessions can be explained by a larger correction in PV which might have induced better haemodynamic conditions. However, the increase in plasma glucagon with carbohydrate supply – compared to Dh and W (P 〈 0.05) – remains unexplained.
Type of Medium:
Electronic Resource
URL:
_version_ 1798297420218499072
autor Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
autorsonst Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
book_url http://dx.doi.org/10.1007/s004210050282
datenlieferant nat_lic_papers
hauptsatz hsatz_simple
identnr NLM204525195
issn 1439-6327
journal_name European journal of applied physiology
materialart 1
notes Abstract The objective of our study was to examine the effects of beverage content on hormone responses involved in fuel substrate metabolism (catecholamines, insulin and glucagon) in previously dehydrated subjects exercising at a moderate intensity in the heat. Six healthy men walked for 60-min on five occasions at 50% maximal oxygen uptake in a warm environment (dry bulb temperature 35 ± 0.2°C, relative humidity 20%). On each occasion, the subjects were dehydrated before exercise (loss of 2% body mass) by passive controlled hyperthermia, which led to a reduction in plasma volume (PV) of about −5% to −9%. In one session, the subjects exercised without rehydration (Dh). In the other sessions, four beverages (650 ml) were given just before the exercise: mineral water (W), a 60 g · l−1 glucose and 1.2 g · l−1 NaCl solution (GS), a 60 g · l−1 maltodextrin solution, and a 60 g · l−1 maltodextrin and 1.2 g · l−1 NaCl solution. Compared to Dh and W, carbohydrate supply with or without NaCl induced a higher glycaemia (P 〈 0.05), a reduced increase in plasma adrenaline concentration (P 〈 0.05) and a higher plasma insulin concentration (P 〈 0.05), which lowered plasma free fatty acids and glycerol concentrations (P 〈 0.05). The lesser increase in plasma noradrenaline concentrations observed during GS compared to Dh and W sessions can be explained by a larger correction in PV which might have induced better haemodynamic conditions. However, the increase in plasma glucagon with carbohydrate supply – compared to Dh and W (P 〈 0.05) – remains unexplained.
package_name Springer
publikationsjahr_anzeige 1997
publikationsjahr_facette 1997
publikationsjahr_intervall 8004:1995-1999
publikationsjahr_sort 1997
publisher Springer
reference 76 (1997), S. 504-509
schlagwort Key words Dehydration
Exercise
Heat
Hormones
Rehydration
search_space articles
shingle_author_1 Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
shingle_author_2 Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
shingle_author_3 Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
shingle_author_4 Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
shingle_catch_all_1 Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
Key words Dehydration
Exercise
Heat
Hormones
Rehydration
Key words Dehydration
Exercise
Heat
Hormones
Rehydration
Abstract The objective of our study was to examine the effects of beverage content on hormone responses involved in fuel substrate metabolism (catecholamines, insulin and glucagon) in previously dehydrated subjects exercising at a moderate intensity in the heat. Six healthy men walked for 60-min on five occasions at 50% maximal oxygen uptake in a warm environment (dry bulb temperature 35 ± 0.2°C, relative humidity 20%). On each occasion, the subjects were dehydrated before exercise (loss of 2% body mass) by passive controlled hyperthermia, which led to a reduction in plasma volume (PV) of about −5% to −9%. In one session, the subjects exercised without rehydration (Dh). In the other sessions, four beverages (650 ml) were given just before the exercise: mineral water (W), a 60 g · l−1 glucose and 1.2 g · l−1 NaCl solution (GS), a 60 g · l−1 maltodextrin solution, and a 60 g · l−1 maltodextrin and 1.2 g · l−1 NaCl solution. Compared to Dh and W, carbohydrate supply with or without NaCl induced a higher glycaemia (P 〈 0.05), a reduced increase in plasma adrenaline concentration (P 〈 0.05) and a higher plasma insulin concentration (P 〈 0.05), which lowered plasma free fatty acids and glycerol concentrations (P 〈 0.05). The lesser increase in plasma noradrenaline concentrations observed during GS compared to Dh and W sessions can be explained by a larger correction in PV which might have induced better haemodynamic conditions. However, the increase in plasma glucagon with carbohydrate supply – compared to Dh and W (P 〈 0.05) – remains unexplained.
1439-6327
14396327
Springer
shingle_catch_all_2 Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
Key words Dehydration
Exercise
Heat
Hormones
Rehydration
Key words Dehydration
Exercise
Heat
Hormones
Rehydration
Abstract The objective of our study was to examine the effects of beverage content on hormone responses involved in fuel substrate metabolism (catecholamines, insulin and glucagon) in previously dehydrated subjects exercising at a moderate intensity in the heat. Six healthy men walked for 60-min on five occasions at 50% maximal oxygen uptake in a warm environment (dry bulb temperature 35 ± 0.2°C, relative humidity 20%). On each occasion, the subjects were dehydrated before exercise (loss of 2% body mass) by passive controlled hyperthermia, which led to a reduction in plasma volume (PV) of about −5% to −9%. In one session, the subjects exercised without rehydration (Dh). In the other sessions, four beverages (650 ml) were given just before the exercise: mineral water (W), a 60 g · l−1 glucose and 1.2 g · l−1 NaCl solution (GS), a 60 g · l−1 maltodextrin solution, and a 60 g · l−1 maltodextrin and 1.2 g · l−1 NaCl solution. Compared to Dh and W, carbohydrate supply with or without NaCl induced a higher glycaemia (P 〈 0.05), a reduced increase in plasma adrenaline concentration (P 〈 0.05) and a higher plasma insulin concentration (P 〈 0.05), which lowered plasma free fatty acids and glycerol concentrations (P 〈 0.05). The lesser increase in plasma noradrenaline concentrations observed during GS compared to Dh and W sessions can be explained by a larger correction in PV which might have induced better haemodynamic conditions. However, the increase in plasma glucagon with carbohydrate supply – compared to Dh and W (P 〈 0.05) – remains unexplained.
1439-6327
14396327
Springer
shingle_catch_all_3 Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
Key words Dehydration
Exercise
Heat
Hormones
Rehydration
Key words Dehydration
Exercise
Heat
Hormones
Rehydration
Abstract The objective of our study was to examine the effects of beverage content on hormone responses involved in fuel substrate metabolism (catecholamines, insulin and glucagon) in previously dehydrated subjects exercising at a moderate intensity in the heat. Six healthy men walked for 60-min on five occasions at 50% maximal oxygen uptake in a warm environment (dry bulb temperature 35 ± 0.2°C, relative humidity 20%). On each occasion, the subjects were dehydrated before exercise (loss of 2% body mass) by passive controlled hyperthermia, which led to a reduction in plasma volume (PV) of about −5% to −9%. In one session, the subjects exercised without rehydration (Dh). In the other sessions, four beverages (650 ml) were given just before the exercise: mineral water (W), a 60 g · l−1 glucose and 1.2 g · l−1 NaCl solution (GS), a 60 g · l−1 maltodextrin solution, and a 60 g · l−1 maltodextrin and 1.2 g · l−1 NaCl solution. Compared to Dh and W, carbohydrate supply with or without NaCl induced a higher glycaemia (P 〈 0.05), a reduced increase in plasma adrenaline concentration (P 〈 0.05) and a higher plasma insulin concentration (P 〈 0.05), which lowered plasma free fatty acids and glycerol concentrations (P 〈 0.05). The lesser increase in plasma noradrenaline concentrations observed during GS compared to Dh and W sessions can be explained by a larger correction in PV which might have induced better haemodynamic conditions. However, the increase in plasma glucagon with carbohydrate supply – compared to Dh and W (P 〈 0.05) – remains unexplained.
1439-6327
14396327
Springer
shingle_catch_all_4 Jimenez, C.
Melin, B.
Koulmann, N.
Charpenet, A.
Cottet-Emard, J. M.
Péquignot, J. M.
Savourey, G.
Bittel, J.
Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
Key words Dehydration
Exercise
Heat
Hormones
Rehydration
Key words Dehydration
Exercise
Heat
Hormones
Rehydration
Abstract The objective of our study was to examine the effects of beverage content on hormone responses involved in fuel substrate metabolism (catecholamines, insulin and glucagon) in previously dehydrated subjects exercising at a moderate intensity in the heat. Six healthy men walked for 60-min on five occasions at 50% maximal oxygen uptake in a warm environment (dry bulb temperature 35 ± 0.2°C, relative humidity 20%). On each occasion, the subjects were dehydrated before exercise (loss of 2% body mass) by passive controlled hyperthermia, which led to a reduction in plasma volume (PV) of about −5% to −9%. In one session, the subjects exercised without rehydration (Dh). In the other sessions, four beverages (650 ml) were given just before the exercise: mineral water (W), a 60 g · l−1 glucose and 1.2 g · l−1 NaCl solution (GS), a 60 g · l−1 maltodextrin solution, and a 60 g · l−1 maltodextrin and 1.2 g · l−1 NaCl solution. Compared to Dh and W, carbohydrate supply with or without NaCl induced a higher glycaemia (P 〈 0.05), a reduced increase in plasma adrenaline concentration (P 〈 0.05) and a higher plasma insulin concentration (P 〈 0.05), which lowered plasma free fatty acids and glycerol concentrations (P 〈 0.05). The lesser increase in plasma noradrenaline concentrations observed during GS compared to Dh and W sessions can be explained by a larger correction in PV which might have induced better haemodynamic conditions. However, the increase in plasma glucagon with carbohydrate supply – compared to Dh and W (P 〈 0.05) – remains unexplained.
1439-6327
14396327
Springer
shingle_title_1 Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
shingle_title_2 Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
shingle_title_3 Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
shingle_title_4 Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
sigel_instance_filter dkfz
geomar
wilbert
ipn
albert
fhp
source_archive Springer Online Journal Archives 1860-2000
timestamp 2024-05-06T10:07:42.703Z
titel Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
titel_suche Effects of various beverages on the hormones involved in energy metabolism during exercise in the heat in previously dehydrated subjects
topic WW-YZ
uid nat_lic_papers_NLM204525195