Application of Continuous Glucose Monitoring for Assessment of Individual Carbohydrate Requirement during Ultramarathon Race
Background: The current study intended to evaluate the feasibility of the application of continuous glucose monitoring to guarantee optimal intake of carbohydrate to maintain blood glucose levels during a 160-km ultramarathon race. Methods: Seven ultramarathon runners (four male and three female) to...
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| Format: | Article |
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MDPI AG
2020-04-01
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| Series: | Nutrients |
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| Online Access: | https://www.mdpi.com/2072-6643/12/4/1121 |
| _version_ | 1797570360519950336 |
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| author | Kengo Ishihara Natsuki Uchiyama Shino Kizaki Emi Mori Tsutomu Nonaka Hiroshi Oneda |
| author_facet | Kengo Ishihara Natsuki Uchiyama Shino Kizaki Emi Mori Tsutomu Nonaka Hiroshi Oneda |
| author_sort | Kengo Ishihara |
| collection | DOAJ |
| description | Background: The current study intended to evaluate the feasibility of the application of continuous glucose monitoring to guarantee optimal intake of carbohydrate to maintain blood glucose levels during a 160-km ultramarathon race. Methods: Seven ultramarathon runners (four male and three female) took part in the study. The glucose profile was monitored continuously throughout the race, which was divided into 11 segments by timing gates. Running speed in each segment was standardized to the average of the top five finishers for each gender. Food and drink intake during the race were recorded and carbohydrate and energy intake were calculated. Results: Observed glucose levels ranged between 61.9–252.0 mg/dL. Average glucose concentration differed from the start to the end of the race (104 ± 15.0 to 164 ± 30.5 SD mg/dL). The total amount of carbohydrate intake during the race ranged from 0.27 to 1.14 g/kg/h. Glucose concentration positively correlated with running speeds in segments (<i>P</i> < 0.005). Energy and carbohydrate intake positively correlated with overall running speed (<i>P</i> < 0.01). Conclusion: The present study demonstrates that continuous glucose monitoring could be practical to guarantee optimal carbohydrate intake for each ultramarathon runner. |
| first_indexed | 2024-03-10T20:23:49Z |
| format | Article |
| id | doaj.art-0941983c05db43a98c2aeb357811bf0a |
| institution | Directory Open Access Journal |
| issn | 2072-6643 |
| language | English |
| last_indexed | 2024-03-10T20:23:49Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nutrients |
| spelling | doaj.art-0941983c05db43a98c2aeb357811bf0a2023-11-19T21:54:29ZengMDPI AGNutrients2072-66432020-04-01124112110.3390/nu12041121Application of Continuous Glucose Monitoring for Assessment of Individual Carbohydrate Requirement during Ultramarathon RaceKengo Ishihara0Natsuki Uchiyama1Shino Kizaki2Emi Mori3Tsutomu Nonaka4Hiroshi Oneda5Department of Food Sciences and Human Nutrition, Faculty of Agriculture, Ryukoku University, Shiga 520-2194, JapanDepartment of Food Sciences and Human Nutrition, Faculty of Agriculture, Ryukoku University, Shiga 520-2194, JapanDepartment of Food Sciences and Human Nutrition, Faculty of Agriculture, Ryukoku University, Shiga 520-2194, JapanDepartment of Food Sciences and Human Nutrition, Faculty of Agriculture, Ryukoku University, Shiga 520-2194, JapanTail Ender’s Trail Running Life, Tokyo 176-0004, JapanNagatasangyo Co., Ltd, Shiso 671-2544, JapanBackground: The current study intended to evaluate the feasibility of the application of continuous glucose monitoring to guarantee optimal intake of carbohydrate to maintain blood glucose levels during a 160-km ultramarathon race. Methods: Seven ultramarathon runners (four male and three female) took part in the study. The glucose profile was monitored continuously throughout the race, which was divided into 11 segments by timing gates. Running speed in each segment was standardized to the average of the top five finishers for each gender. Food and drink intake during the race were recorded and carbohydrate and energy intake were calculated. Results: Observed glucose levels ranged between 61.9–252.0 mg/dL. Average glucose concentration differed from the start to the end of the race (104 ± 15.0 to 164 ± 30.5 SD mg/dL). The total amount of carbohydrate intake during the race ranged from 0.27 to 1.14 g/kg/h. Glucose concentration positively correlated with running speeds in segments (<i>P</i> < 0.005). Energy and carbohydrate intake positively correlated with overall running speed (<i>P</i> < 0.01). Conclusion: The present study demonstrates that continuous glucose monitoring could be practical to guarantee optimal carbohydrate intake for each ultramarathon runner.https://www.mdpi.com/2072-6643/12/4/1121sports nutritioncontinuous glucose monitoringcarbohydratetrail runningFreestyle Libre |
| spellingShingle | Kengo Ishihara Natsuki Uchiyama Shino Kizaki Emi Mori Tsutomu Nonaka Hiroshi Oneda Application of Continuous Glucose Monitoring for Assessment of Individual Carbohydrate Requirement during Ultramarathon Race Nutrients sports nutrition continuous glucose monitoring carbohydrate trail running Freestyle Libre |
| title | Application of Continuous Glucose Monitoring for Assessment of Individual Carbohydrate Requirement during Ultramarathon Race |
| title_full | Application of Continuous Glucose Monitoring for Assessment of Individual Carbohydrate Requirement during Ultramarathon Race |
| title_fullStr | Application of Continuous Glucose Monitoring for Assessment of Individual Carbohydrate Requirement during Ultramarathon Race |
| title_full_unstemmed | Application of Continuous Glucose Monitoring for Assessment of Individual Carbohydrate Requirement during Ultramarathon Race |
| title_short | Application of Continuous Glucose Monitoring for Assessment of Individual Carbohydrate Requirement during Ultramarathon Race |
| title_sort | application of continuous glucose monitoring for assessment of individual carbohydrate requirement during ultramarathon race |
| topic | sports nutrition continuous glucose monitoring carbohydrate trail running Freestyle Libre |
| url | https://www.mdpi.com/2072-6643/12/4/1121 |
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