Functional Evaluation of Kefir Drink on Antifatigue and Exercise Exercise Performance-2

Not Applicable

Completed

• Conditions: Exercise Performance; Fatigue
• Interventions: Dietary Supplement: placebo; Dietary Supplement: Kefir

• Registration Number: NCT04293666
• Lead Sponsor: National Taiwan Sport University

Brief Summary

Purpose: The aim of the present study was to evaluate potential beneficial effects of Kefir drink (Synbio Tech Inc., Kaohsiung City, Taiwan) on fatigue and ergogenic functions following physiological challenge. Methods: 16 male subjects, 8 in each group, were divided into two groups according to the principle of maximal oxygen uptake, which were (1) first-stage placebo and second-stage Kefir group (hereinafter referred to as group A). (2) The first phase of Kefeier, the second phase of the placebo group (hereinafter referred to as group B), after 4 weeks of supplementation, the performance and fatigue resistance tests were carried out in sequence, including: treadmill aerobic endurance exhaustion time, and fixation Exercise time and intensity challenge changes in blood lactate, blood urea nitrogen concentration and creatine kinase activity, as well as differences in body composition before and after supplementation. After the first phase of the test is completed, the four weeks of emptying are performed. And after adding the crossover sample, perform four weeks of supplementation and testing again.

Detailed Description

Not available

Study Timeline

• Study Start: 2019-01-27
• Primary Completion: 2019-04-18
• Study Completion: 2019-04-18
• Study First Submitted: 2020-02-19
• Study First Submitted QC: 2020-02-29
• Study First Posted: 2020-03-03
• Status Verified: 2022-10
• Last Update Submitted: 2022-10-17
• Last Update Posted: 2022-10-19

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 32

Inclusion Criteria

• >20 years old
• health

Exclusion Criteria

• No smoking
• drinking habits
• no nutritional supplements or medications
• no food allergies
• normal liver and kidney function
• no diabetes and other chronic diseases

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
placebo	placebo	(1) first-stage placebo and second-stage Kefir group (hereinafter referred to as group A).
Kefir drink	Kefir	(2) The first phase of Kefir, the second phase of the placebo group (hereinafter referred to as group B

Primary Outcome Measures

Name	Time	Method
Clinical Biochemistry of lactate level	28 days	For assessment of fatigue-related indices, volunteers fasted for at least 8 h before the 60% VO2max fixed intensity exercise challenge. Blood samples were collected with an arm venous catheter at indicated time points during exercise and recovery periods, including baseline (0), 5 (E5), 10 (E10), 15 (E15), and 30 (E30) min during the exercise phase, and 20 (R20), 40 (R40), 60 (R60), and 90 (R90) min in the recovery phase. Serum lactate (mmol/L), were assessed for monitoring physiological adaptation. All biochemical indices were assessed using an autoanalyzer (Hitachi 7060, Tokyo, Japan).
Clinical Biochemistry of CK level	28 days	For assessment of fatigue-related indices, volunteers fasted for at least 8 h before the 60% VO2max fixed intensity exercise challenge. Blood samples were collected with an arm venous catheter at indicated time points during exercise and recovery periods, including baseline (0), 5 (E5), 10 (E10), 15 (E15), and 30 (E30) min during the exercise phase, and 20 (R20), 40 (R40), 60 (R60), and 90 (R90) min in the recovery phase. Serum CK (U/L), were assessed for monitoring physiological adaptation. All biochemical indices were assessed using an autoanalyzer (Hitachi 7060, Tokyo, Japan).
Clinical Biochemistry of glucose level	28 days	For assessment of fatigue-related indices, volunteers fasted for at least 8 h before the 60% VO2max fixed intensity exercise challenge. Blood samples were collected with an arm venous catheter at indicated time points during exercise and recovery periods, including baseline (0), 5 (E5), 10 (E10), 15 (E15), and 30 (E30) min during the exercise phase, and 20 (R20), 40 (R40), 60 (R60), and 90 (R90) min in the recovery phase. Serum glucose (mg/dL), were assessed for monitoring physiological adaptation. All biochemical indices were assessed using an autoanalyzer (Hitachi 7060, Tokyo, Japan).
Exercise endurance exhaustion time	28 days	We adopted a double-blind test in which the volunteers, based on their basal maximal oxygen consumption (VO2max). before and after intervention, the individual basal VO2max during pretest was used as a reference to adjust the individually appropriate exercise intensity to measure exhaustive endurance (85% VO2max) and recording the running time from begin to exhaust.
Clinical Biochemistry of ammonia level	28 days	For assessment of fatigue-related indices, volunteers fasted for at least 8 h before the 60% VO2max fixed intensity exercise challenge. Blood samples were collected with an arm venous catheter at indicated time points during exercise and recovery periods, including baseline (0), 5 (E5), 10 (E10), 15 (E15), and 30 (E30) min during the exercise phase, and 20 (R20), 40 (R40), 60 (R60), and 90 (R90) min in the recovery phase. Serum ammonia (umol/L), were assessed for monitoring physiological adaptation. All biochemical indices were assessed using an autoanalyzer (Hitachi 7060, Tokyo, Japan).

Trial Locations

Locations (1)

National Taiwan Sport University; 🇨🇳 Taoyuan, Taiwan