Ignite Creation Date:
2024-06-16 @ 11:52 AM
Last Modification Date:
2024-10-26 @ 3:32 PM
Study NCT ID:
NCT06461117
Status:
COMPLETED
Last Update Posted:
2024-06-17
First Post:
2024-06-07
Brief Title:
Beetroot Juice Anaerobic Performance and Fatigue in Swimmers
Sponsor:
Istanbul Bilgi University
Organization:
Istanbul Bilgi University
Study Overview
Official Title:
Effect of Beetroot Juice on Anaerobic Performance and Fatigue in Adolescent Male Swimmers
Status:
COMPLETED
Status Verified Date:
2024-06
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The effects of beet juice supplementation on different types of physical performance have been examined in many studies However although the number of studies including the effect of beet juice on physical performance measuring blood lactate and fatigue levels in swimmers is limited most studies focused on acute intake This study investigated the effects of beetroot juice on anaerobic performance fatigue and blood lactate in adolescent male swimmersSwimmers underwent a single-blind intervention consuming either a 2x250 ml placebo 06 mmol NO3- or beetroot juice 8 mmol NO3- rich in nitrate NO3- for six days Performance was measured through an 8x100-meter maximal effort swim with blood lactate and perceived fatigue assessed before and after
Detailed Description:
This study designed as a single-blind intervention study was conducted in October-November 2023 with adolescent swimmers In determining the sample effect size d effect size 16975 and standard deviation was taken as 412 and the minimum number of samples determined for Power 095 and α 005 in the GPower 319 computer program was determined as seven adolescents Adolescent swimmers with a medical condition diagnosed by a physician following a special diet and using regular medication were excluded from the study Anthropometric measurements body weight height body composition skin fold measurements freestyle time trial TT swimming performance test blood lactate measurement and the Borg fatigue scale were taken
Anthropometric Measurements Body Weight Height and Body Composition The heights of the swimmers were measured with the SECA 213 brand portable stadiometer with the feet side by side and the head on the Frankfurt plane Body weight and composition were measured in the morning on an empty stomach with light clothing without shoes or socks using a 01 kg sensitive TANITA MC-780 Black professional body composition device
Skinfold Thickness Measurements Swimmers skinfold thicknesses were taken from the triceps biceps subscapular supraspinal abdomen thigh calf chest and midaxillary regions using Holstein brand calipers Measurements were madein accordance with the ISAK protocol Norton 2018 The body fat ratio was calculated with the Foulkner 1968 equation which was developed to calculate the body fat ratio from skinfold thickness measurements on the face
Freestyle Time Trial TT Swimming Performance Test The swimmers 8x100 m maximum effort swimming performance times were recorded with the help of a Seiko S141 300 memory stopwatch brand stopwatch with 1100 second precision A polar watch was attached to the swimmers right arms and measurements were taken every 100 m The start of the performance was made from the sprint stone with the command take your mark followed by an electronic beep 100 m freestyle swimming performance was performed by swimmers with maximum performance
Blood Lactate Measurement The blood lactate measurement was completed after the 8x100 m maximum effort swimming performance blood samples taken from the finger within 10 seconds were analyzed using the Lactate Pro 2 analyzer Lactate values were recorded in mmoll
Borg Fatigue Scale The level of fatigue perceived by swimmers during the performance was recorded using the Borg Fatigue Scale The swimmers were asked to use this scale verbally at the end of each 8x00 meter test and they were asked to evaluate it between 0 and 10 As the score from the scale increases the level of perceived fatigue increases Borg 1982
Study PlanInformed consent forms were obtained after informing the adolescent male swimmers and their parents about the study Throughout the study they were instructed to avoid nitrate-rich foods eg beets celery spinach Additionally they were asked not to use antibacterial mouthwash and chewing gum which have been shown to kill bacteria in the mouth and impair NO2- bioavailability during the study period Govoni et al 2008 In addition swimmers were asked to stay away from alcohol and tobacco products and maintain their routine eating habits by being able to eat whatever they wanted throughout the study It was reported that they should avoid consuming caffeine 24 hours before performance tests and consuming anything other than water 3 hours before the test In addition swimmers avoided brushing their teeth 24 hours before consumption of sugar stimulants eg caffeine or alcohol using mouthwash chewing gum which may alter the oral microbiota and interfere with NO3- reduction López-Samanes et al 2020
This study was conducted in 3 stages to determine the effect of beetroot juice on anaerobic performance and fatigue in adolescent male swimmers
Pre-Intervention In order to determine their standard performance in the first stage before the intervention the swimmers were subjected to the 8x100 m freestyle maximum effort swimming test at 0700 on Saturday morning without drinking any beverages The sets were performed in 2 minutes and the performance times for each 100-meter run were recorded with a stopwatch At the end of the 8x100 meter test the blood lactate values of the swimmers were measured 1 minute later with the Lactate Pro 2 analyzer Additionally the Borg Fatigue scale was administered to each swimmer after lactate measurement to measure fatigue levels After the end of the test placebo drinks were distributed to the swimmers for the second phase
No information was given about whether the drinks given to the swimmers were beet juice or placebo The swimmers participating in the study were doing double training three days a week and single training on the other days except Sunday
Placebo Intervention In the second stage of the research swimmers were subjected to the 8x100 m freestyle maximum effort swimming test on the same day and time of the week after consuming a placebo drink The swimmers blood lactate values and fatigue scale were reapplied using the same procedure After the analysis of the results of the placebo intervention beetroot juice drinks were distributed to the swimmers to be used in the third stage Swimmers were asked to consume 2x250 ml of beet juice on weekdays and 1x250 ml on Saturdays before the performance test Swimmers consumed beetroot juice 25 hours before training on double training days On single training days during the week the patient was asked to consume 2x250 ml of beetroot juice at similar times to other days
Beetroot Juice Intervention In the third and final stage of the study the 8x100 meter freestyle maximum effort performance test blood lactate test and Borg scale were repeated to make final evaluations of beet juice consumption on the same day and time and the study was concluded
Statistical Analysis While evaluating the findings obtained in the study the IBM SPSS Statistics 22 program was used for statistical analysis The compliance of the parameters with normal distribution was evaluated using the Shapiro-Wilks test While evaluating the study data in addition to descriptive statistical methods minimum maximum mean standard deviation median frequency the Repeated Measures Analysis of Variance test was used for intra-group comparisons of customarily distributed parameters in the comparison of quantitative data and the Bonferroni test was used as a post hoc test Friedman Test and Wilcoxon sign test were used as post hoc tests for intragroup comparisons of parameters that did not show normal distribution Pearson correlation analysis was used to examine the relationships between parameters that conform to normal distribution and Spearmans rho correlation analysis was used to examine the relationships between parameters that do not comply with normal distribution Significance was evaluated at p005 level
Anthropometric Measurements Body Weight Height and Body Composition The heights of the swimmers were measured with the SECA 213 brand portable stadiometer with the feet side by side and the head on the Frankfurt plane Body weight and composition were measured in the morning on an empty stomach with light clothing without shoes or socks using a 01 kg sensitive TANITA MC-780 Black professional body composition device
Skinfold Thickness Measurements Swimmers skinfold thicknesses were taken from the triceps biceps subscapular supraspinal abdomen thigh calf chest and midaxillary regions using Holstein brand calipers Measurements were madein accordance with the ISAK protocol Norton 2018 The body fat ratio was calculated with the Foulkner 1968 equation which was developed to calculate the body fat ratio from skinfold thickness measurements on the face
Freestyle Time Trial TT Swimming Performance Test The swimmers 8x100 m maximum effort swimming performance times were recorded with the help of a Seiko S141 300 memory stopwatch brand stopwatch with 1100 second precision A polar watch was attached to the swimmers right arms and measurements were taken every 100 m The start of the performance was made from the sprint stone with the command take your mark followed by an electronic beep 100 m freestyle swimming performance was performed by swimmers with maximum performance
Blood Lactate Measurement The blood lactate measurement was completed after the 8x100 m maximum effort swimming performance blood samples taken from the finger within 10 seconds were analyzed using the Lactate Pro 2 analyzer Lactate values were recorded in mmoll
Borg Fatigue Scale The level of fatigue perceived by swimmers during the performance was recorded using the Borg Fatigue Scale The swimmers were asked to use this scale verbally at the end of each 8x00 meter test and they were asked to evaluate it between 0 and 10 As the score from the scale increases the level of perceived fatigue increases Borg 1982
Study PlanInformed consent forms were obtained after informing the adolescent male swimmers and their parents about the study Throughout the study they were instructed to avoid nitrate-rich foods eg beets celery spinach Additionally they were asked not to use antibacterial mouthwash and chewing gum which have been shown to kill bacteria in the mouth and impair NO2- bioavailability during the study period Govoni et al 2008 In addition swimmers were asked to stay away from alcohol and tobacco products and maintain their routine eating habits by being able to eat whatever they wanted throughout the study It was reported that they should avoid consuming caffeine 24 hours before performance tests and consuming anything other than water 3 hours before the test In addition swimmers avoided brushing their teeth 24 hours before consumption of sugar stimulants eg caffeine or alcohol using mouthwash chewing gum which may alter the oral microbiota and interfere with NO3- reduction López-Samanes et al 2020
This study was conducted in 3 stages to determine the effect of beetroot juice on anaerobic performance and fatigue in adolescent male swimmers
Pre-Intervention In order to determine their standard performance in the first stage before the intervention the swimmers were subjected to the 8x100 m freestyle maximum effort swimming test at 0700 on Saturday morning without drinking any beverages The sets were performed in 2 minutes and the performance times for each 100-meter run were recorded with a stopwatch At the end of the 8x100 meter test the blood lactate values of the swimmers were measured 1 minute later with the Lactate Pro 2 analyzer Additionally the Borg Fatigue scale was administered to each swimmer after lactate measurement to measure fatigue levels After the end of the test placebo drinks were distributed to the swimmers for the second phase
No information was given about whether the drinks given to the swimmers were beet juice or placebo The swimmers participating in the study were doing double training three days a week and single training on the other days except Sunday
Placebo Intervention In the second stage of the research swimmers were subjected to the 8x100 m freestyle maximum effort swimming test on the same day and time of the week after consuming a placebo drink The swimmers blood lactate values and fatigue scale were reapplied using the same procedure After the analysis of the results of the placebo intervention beetroot juice drinks were distributed to the swimmers to be used in the third stage Swimmers were asked to consume 2x250 ml of beet juice on weekdays and 1x250 ml on Saturdays before the performance test Swimmers consumed beetroot juice 25 hours before training on double training days On single training days during the week the patient was asked to consume 2x250 ml of beetroot juice at similar times to other days
Beetroot Juice Intervention In the third and final stage of the study the 8x100 meter freestyle maximum effort performance test blood lactate test and Borg scale were repeated to make final evaluations of beet juice consumption on the same day and time and the study was concluded
Statistical Analysis While evaluating the findings obtained in the study the IBM SPSS Statistics 22 program was used for statistical analysis The compliance of the parameters with normal distribution was evaluated using the Shapiro-Wilks test While evaluating the study data in addition to descriptive statistical methods minimum maximum mean standard deviation median frequency the Repeated Measures Analysis of Variance test was used for intra-group comparisons of customarily distributed parameters in the comparison of quantitative data and the Bonferroni test was used as a post hoc test Friedman Test and Wilcoxon sign test were used as post hoc tests for intragroup comparisons of parameters that did not show normal distribution Pearson correlation analysis was used to examine the relationships between parameters that conform to normal distribution and Spearmans rho correlation analysis was used to examine the relationships between parameters that do not comply with normal distribution Significance was evaluated at p005 level
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None