Source:http://linkedlifedata.com/resource/pubmed/id/19608927
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
3
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| pubmed:dateCreated |
2009-8-28
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| pubmed:abstractText |
We examined whether protein-carbohydrate (CHO) supplementation immediately after exercise each day during aerobic training facilitated plasma volume (PV) expansion and thermoregulatory and cardiovascular adaptations in older men. Fourteen moderately active older men [68 +/- 5 (SD) yr] were divided into two groups so as to have no significant differences in anthropometric measures, PV, and peak oxygen consumption rate (Vo(2peak)). Each group was provided with a mixture of protein and CHO (3.2 kcal, 0.18 g protein/kg body wt, Pro-CHO, n = 7) or a non-protein and low-calorie placebo (0.5 kcal, 0 g protein/kg body wt, CNT, n = 7) immediately after cycling exercise (60-75% Vo(2peak), 60 min/day, 3 days/wk) each day for 8 wk at approximately 19 degrees C ambient temperature (T(a)) and approximately 43% relative humidity (RH). Before and after training, we measured PV, cardiac stroke volume (SV), and esophageal temperature (T(es)) during 20-min exercise at 60% of pretraining Vo(2peak) at 30 degrees C T(a) and 50% RH. Moreover, we determined the sensitivity of the chest sweat rate (DeltaSR/DeltaT(es)) and forearm vascular conductance (DeltaFVC/DeltaT(es)) in response to increased T(es) during exercise. After training, PV increased by approximately 6% in Pro-CHO (P < 0.001), with an approximately 10% increase in SV during exercise (P < 0.001), but not in CNT (P > 0.07). DeltaFVC/DeltaT(es) increased by 80% and DeltaSR/DeltaT(es) by 18% in Pro-CHO (both P < 0.01) but not in CNT (P > 0.07). Moreover, we found a significant interactive effect of group x training on PV, SV, and DeltaFVC/DeltaT(es) (all P < 0.02) but with no significant effect of group (P > 0.4), suggesting that the supplement enhanced these responses to aerobic training. Thus postexercise protein-CHO supplementation during training caused PV expansion and facilitated thermoregulatory and cardiovascular adaptations, possibly providing a new training regimen for older men.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:citationSubset |
IM
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| pubmed:chemical | |
| pubmed:status |
MEDLINE
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| pubmed:month |
Sep
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| pubmed:issn |
8750-7587
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
107
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
725-33
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| pubmed:meshHeading |
pubmed-meshheading:19608927-Adaptation, Physiological,
pubmed-meshheading:19608927-Aged,
pubmed-meshheading:19608927-Anaerobic Threshold,
pubmed-meshheading:19608927-Blood Pressure,
pubmed-meshheading:19608927-Body Temperature Regulation,
pubmed-meshheading:19608927-Carbon Monoxide,
pubmed-meshheading:19608927-Cardiovascular Physiological Phenomena,
pubmed-meshheading:19608927-Diet,
pubmed-meshheading:19608927-Dietary Carbohydrates,
pubmed-meshheading:19608927-Dietary Proteins,
pubmed-meshheading:19608927-Dietary Supplements,
pubmed-meshheading:19608927-Exercise,
pubmed-meshheading:19608927-Female,
pubmed-meshheading:19608927-Heart Rate,
pubmed-meshheading:19608927-Hot Temperature,
pubmed-meshheading:19608927-Humans,
pubmed-meshheading:19608927-Humidity,
pubmed-meshheading:19608927-Male,
pubmed-meshheading:19608927-Physical Fitness,
pubmed-meshheading:19608927-Plasma Volume,
pubmed-meshheading:19608927-Regional Blood Flow,
pubmed-meshheading:19608927-Serum Albumin,
pubmed-meshheading:19608927-Sweating
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| pubmed:year |
2009
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| pubmed:articleTitle |
Impact of protein and carbohydrate supplementation on plasma volume expansion and thermoregulatory adaptation by aerobic training in older men.
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| pubmed:affiliation |
Department of Sports Medical Sciences, Shinshu University Graduate School of Medicine, Matsumoto 390-8621, Japan.
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| pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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