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

NCT04293666 | Completed DMC

• 1 other identifier: 00001
• Study Type: interventional
• Target: 32
• Locations: 1 country
• Sites: 1

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.

Conditions

Exercise Performance; Fatigue

Outcome Measures

Primary Outcomes (5)

• Exercise endurance exhaustion time

  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.

  28 days

• Clinical Biochemistry of lactate level

  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).

  28 days

• Clinical Biochemistry of ammonia level

  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).

  28 days

• Clinical Biochemistry of CK level

  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).

  28 days

• Clinical Biochemistry of glucose level

  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).

  28 days

Study Arms (2)

Kefir drink

EXPERIMENTAL

(2) The first phase of Kefir, the second phase of the placebo group (hereinafter referred to as group B

Dietary Supplement: Kefir

placebo

PLACEBO COMPARATOR

(1) first-stage placebo and second-stage Kefir group (hereinafter referred to as group A).

Dietary Supplement: placebo

Interventions

Kefir DIETARY_SUPPLEMENT

28 days supplementation kefir drink (prepared by inoculating pasteurized 9.2% reconstituted skim milk with powder kefir starter culture and fermented at 37 °C for 16 h. The fermented milk was then pasteurized at 100 °C for 30 min and freeze dried. The powder kefir starter culture used for inoculation was composed of defined lactic acid bacteria strains which contains Lactobacillus fermentum DSM 32784 (LF26), L. helveticus DSM 32787 (LH43), L. paracasei DSM 32785 (LPC12), L. rhamnosus DSM 32786 (LRH10), and Streptococcus thermophilus DSM 32788 (ST30)), 200ml/day

Kefir drink

placebo DIETARY_SUPPLEMENT

Maltodextrin, same calorie as kefir, 200ml/day

placebo

Eligibility Criteria

• Age: 20 Years - 30 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• \>20 years old
• health

You may not qualify if:

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

Sponsors & Collaborators

• National Taiwan Sport University: lead
• Synbio Tech Inc.: collaborator

Study Sites (1)

National Taiwan Sport University

Taoyuan District, 333, Taiwan

Location

MeSH Terms

Conditions

Fatigue

Interventions

Kefir

Condition Hierarchy (Ancestors)

Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Fermented Beverages; Beverages; Diet, Food, and Nutrition; Physiological Phenomena; Cultured Milk Products; Milk; Fermented Foods; Dairy Products; Food; Food and Beverages

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: PI

Study Record Dates

• First Submitted: February 19, 2020
• First Posted: March 3, 2020
• Study Start: January 27, 2019
• Primary Completion: April 18, 2019
• Study Completion: April 18, 2019
• Last Updated: October 19, 2022

Record last verified: 2022-10

Data Sharing

• IPD Sharing: Will not share

Locations

TW (1)