Early postexercise muscle glycogen recovery is enhanced with a carbohydrate-protein supplement

Ivy, John L.; Goforth, Harold W.; Damon, Bruce M.; McCauley, Thomas R.; Parsons, Edward C.; Price, Thomas B.

doi:10.1152/japplphysiol.00394.2002

Cited by 269 publications

(225 citation statements)

References 29 publications

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“…In another study including only NT women, 7 a marked reduction in BP was observed after acute dynamic exercise in middle-aged and elderly women but not in young women. Other studies 8,9 have shown greater BP reductions in persons aged 41-60 years compared with older and younger individuals.Ambulatory arterial blood pressure monitoring (ABPM) has been extensively used to obtain more detailed information about BP …”

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confidence: 83%

Effect of a single session of aerobic walking exercise on arterial pressure in community-living elderly individuals

et al. 2012

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Several studies have demonstrated that one exercise session (ES) on a cycloergometer or ergometric treadmill causes a reduction in blood pressure (BP). However, there are few similar studies on walking, which is the exercise modality most available to the elderly. We investigated the immediate and 24-h effects of walking on BP in independent, community-living elderly individuals. Volunteers participated in a single ES and resting control session (CS). Before and after each session, BP was measured by auscultatory and oscillometric methods. After each session, 24-h ambulatory blood pressure monitoring was conducted. An accelerometer was installed 48 h before the sessions and left in place for 5 days. The mean volunteer age was 67.7 ± 3.5 years; 11 were hypertensive patients under treatment, and 12 were normotensive. In the total sample, there were immediate 14mm Hg and 12 mm Hg reductions in systolic BP (SBP) after the ES according to the auscultatory and oscillometric methods, respectively. Diastolic BP (DBP) was reduced by 4 mm Hg after the ES according to both methods. SBP during wakefulness and sleep and DBP during wakefulness were lower after the ES than after the CS (Po0.01), when wakefulness and sleep were determined individually (variable-time pattern) using data from the activity monitors and provided by the volunteers. Keywords: actigraph; aerobic exercise; ambulatory blood pressure monitoring; blood pressure; elderly individuals INTRODUCTIONThe aging process is associated with many important physiological changes, of which increased blood pressure (BP) is one of the most well known. In addition to regular physical exercise, a single session of acute exercise has also been observed to reduce BP during the recovery period.Hypotensive responses have been observed in hypertensive animals 1,2 and normotensive (NT) and hypertensive humans. [3][4][5][6] The magnitude of the hypotensive response to aerobic exercise varies between NT and hypertensive subjects and young and elderly subjects. In a study conducted in NT and hypertensive elderly persons, 6 reduced BP was observed only in hypertensive subjects after executing a single exercise session (ES) on a cycloergometer. In another study including only NT women, 7 a marked reduction in BP was observed after acute dynamic exercise in middle-aged and elderly women but not in young women. Other studies 8,9 have shown greater BP reductions in persons aged 41-60 years compared with older and younger individuals.Ambulatory arterial blood pressure monitoring (ABPM) has been extensively used to obtain more detailed information about BP

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confidence: 83%

Effect of a single session of aerobic walking exercise on arterial pressure in community-living elderly individuals

et al. 2012

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“…Ivy et al 30 discussed some methodological variances that could explain these inconsistencies, including differences in carbohydrate and protein concentrations in supplements, supplement administration protocols, time period of recovery measurements, and applied exercise protocols. Since this is the first study to investigate, in practice, the effect of CHO supplementation along with pea protein by means of the LRT, comparisons with other findings are limited.…”

Section: Discussionmentioning

confidence: 99%

Co-ingestion of carbohydrate and pea protein does not enhance muscle recovery after strenuous exercise

et al. 2014

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A B S T R A C T ObjectiveTo assess the influence of carbohydrate and added pea protein concentrate supplementation on muscle recovery after a military operation called Leader's Reaction Test. MethodsTwenty-four soldiers from the Brazilian Army were divided into three equal groups (n=8). They received either carbohydrate (0.8.g/kg body weight/h), carbohydrate+carbohydrate (1.0.g/kg body weight/h), or carbohydrate+protein (0.8 g/kg body weight/h of carbohydrate + 0.2 g/kg body weight/h of protein), immediately, 60, and 120 minutes after the Leader's Reaction Test. Prior, immediately after and 24 hours after the Leader's Reaction Test, maximal isometric strength and body composition were assessed. Blood samples were also collected for later analysis of concentrations of lactate dehydrogenase and creatine kinase. ResultsTwenty-four hours after the Leader's Reaction Test, maximal creatine kinase levels were significantly lower than its levels immediately after (501.00 ± 422.09 versus 275.29 ± 242.08 U/L (carbohydrate); 616.88 ± 291.45

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“…For example, as discussed by Burke et al (2004) and Ivy and colleagues (Zawadzki et al, 1992;Ivy, 2001;Ivy et al, 2002), the addition of small amounts of protein to carbohydrate ingested after exercise augments the plasma insulin response, which has the potential to alter metabolism. However, at present there is insufficient theoretical rationale or data to recommend inclusion of protein in solutions ingested during exercise.…”

Section: Intake Of Other Fuels During Exercisementioning

confidence: 99%

Fluid and fuel intake during exercise

COYLE¹

Food, Nutrition and Sports Performance II

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The amounts of water, carbohydrate and salt that athletes are advised to ingest during exercise are based upon their effectiveness in attenuating both fatigue as well as illness due to hyperthermia, dehydration or hyperhydration. When possible, fluid should be ingested at rates that most closely match sweating rate. When that is not possible or practical or sufficiently ergogenic, some athletes might tolerate body water losses amounting to 2% of body weight without significant risk to physical well-being or performance when the environment is cold (e.g. 5-108C) or temperate (e.g. 21-228C). However, when exercising in a hot environment ( 4308C), dehydration by 2% of body weight impairs absolute power production and predisposes individuals to heat injury. Fluid should not be ingested at rates in excess of sweating rate and thus body water and weight should not increase during exercise. Fatigue can be reduced by adding carbohydrate to the fluids consumed so that 30-60 g of rapidly absorbed carbohydrate are ingested throughout each hour of an athletic event. Furthermore, sodium should be included in fluids consumed during exercise lasting longer than 2 h or by individuals during any event that stimulates heavy sodium loss (more than 3-4 g of sodium). Athletes do not benefit by ingesting glycerol, amino acids or alleged precursors of neurotransmitter. Ingestion of other substances during exercise, with the possible exception of caffeine, is discouraged. Athletes will benefit the most by tailoring their individual needs for water, carbohydrate and salt to the specific challenges of their sport, especially considering the environment's impact on sweating and heat stress.Keywords: carbohydrate, dehydration, fatigue, gastrointestinal function, hyperthermia, sodium. IntroductionWhen athletes exercise during training or while competing, it is clear that they sometimes benefit by ingesting various mixtures of water, carbohydrate and electrolytes (Convertino et al., 1996;Casa, 2000). The benefits can be expressed through improved performance and/or reduced physiological stress, on an athlete's cardiovascular, central nervous and muscular systems. Although ample scientific evidence exists to support the general theory for encouraging athletes to consume water, carbohydrate and electrolytes during exercise, the practical recommendations for optimally applying these general theories is not simple. This is due to the quite varied nature of the physical stresses encountered during training and competition for a wide range of sports, as well as the unique rules of each sport regarding the allowance for fluid and fuel intake during competition. Furthermore, variations in the physical intensity, duration and environment, as well as individual characteristics of a given athlete, might alter their optimal rate of water, carbohydrate and salt intake as well as the rate of gastrointestinal absorption and feelings of fullness. This task of developing consensus for general recommendations becomes less daunting when approached systematical...

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Early postexercise muscle glycogen recovery is enhanced with a carbohydrate-protein supplement

Cited by 269 publications

References 29 publications

Effect of a single session of aerobic walking exercise on arterial pressure in community-living elderly individuals

Effect of a single session of aerobic walking exercise on arterial pressure in community-living elderly individuals

Co-ingestion of carbohydrate and pea protein does not enhance muscle recovery after strenuous exercise

Fluid and fuel intake during exercise

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