Nutrition and athletic performance: implications of heart rate variability

dc.contributor.authorMinnis, James Michaelen_US
dc.date.accessioned2015-08-11T13:53:05Z
dc.date.available2015-08-11T13:53:05Z
dc.date.graduationmonthAugusten_US
dc.date.issued2015-08-01en_US
dc.date.published2015en_US
dc.description.abstractThe purpose of this review is to examine the role of heart rate variability (HRV) as a predictor of athletic readiness and performance and assess whether nutrition strategies can be implemented to create favorable HRV indices with the goal of improving athletic readiness and performance. The balance between training and recovery is crucial for reaching an optimal adaptation and avoiding overtraining, allowing for improved readiness to train and compete. The measurement of HRV is non-invasive and is used primarily to quantify physical and mental stress in athletes by monitoring the effects of the autonomic nervous system on the heart. Current data suggests a relationship between resting parasympathetic tone, via time and frequency domains, and athletic performance. Parasympathetic modulated HRV indices have been associated with performance metrics such as peripheral work capacity, aerobic power, running and sprint performance, swimming performance, weight lifting performance, anaerobic capacity, strength, and enhanced mental focus/skill execution. The use of nutrition to help enhance sports performance is becoming more common. Evidence-based sports nutrition provides fuel for training/competition, assists in maximizing training adaptations, enhances recovery, improves mental focus, and aids in injury prevention and recovery. The use of nutrition strategies to influence HRV is novel and current evidence is scarce in regards to nutritional effects on HRV, specifically in athletes. Current research suggests that achieving energy balance and decreasing body fat in overweight/obese individuals has positive effects on the vagal component of HRV indices. Proper hydration, fruit and vegetable intake, a moderate carbohydrate diet, omega-3 fatty acid supplementation/intake also seem to have positive effects on HRV indices. Certain individual supplements have been studied in regards to HRV including casein hydrolysate, amaranth oil, and bovine colostrum. Caffeine seems to have the opposite effect on HRV indices, increasing sympathetic modulation while decreasing parasympathetic modulation. Much more research needs to be done in regard to potential nutritional influences on HRV so that sport dietitians feel confident in the methods currently used to assess athlete readiness and determining what types of nutrition strategies may be used to further improve the performance of an athlete.en_US
dc.description.advisorMark D. Hauben_US
dc.description.degreeMaster of Scienceen_US
dc.description.departmentDepartment of Human Nutritionen_US
dc.description.levelMastersen_US
dc.identifier.urihttp://hdl.handle.net/2097/20344
dc.language.isoen_USen_US
dc.publisherKansas State Universityen
dc.subjectheart rate variabilityen_US
dc.subjectnutritionen_US
dc.subjectathletic performanceen_US
dc.subjectHRVen_US
dc.subjectathlete readinessen_US
dc.subjectsports nutritionen_US
dc.subject.umiNutrition (0570)en_US
dc.subject.umiSports Management (0430)en_US
dc.titleNutrition and athletic performance: implications of heart rate variabilityen_US
dc.typeReporten_US

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