NCT05909475

Brief Summary

Objective: To discuss the "GKEX Sports Probiotics Combination (hereinafter referred to as GKEX)", a product commissioned by Grape King Biotechnology Co., Ltd., and its effects on increasing muscle mass, muscle strength, physical performance and improving body composition when combined with resistance exercise training. Method: The experiment adopts a double-blind design. After screening, 52 subjects (20 males and 32 females) were randomly divided into two groups, each with 10 males and 16 females: (1) placebo without GKEX probiotics Capsule group (Placebo) (2 capsules/day), (2) GKEX group (GKEX) (1x1010 CFU/capsule, 2 capsules/day). All subjects received daily supplementation samples for 6 weeks and received resistance exercise training three times a week. Before the intervention and 6 weeks after the intervention, the diet evaluation, systemic and resistive body composition, muscle ultrasound, muscle strength, maximum oxygen uptake, explosive power, anaerobic power, etc. were detected respectively.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
52

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Jul 2022

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 4, 2022

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 24, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 24, 2022

Completed
5 months until next milestone

First Submitted

Initial submission to the registry

June 1, 2023

Completed
17 days until next milestone

First Posted

Study publicly available on registry

June 18, 2023

Completed
Last Updated

June 18, 2023

Status Verified

June 1, 2023

Enrollment Period

6 months

First QC Date

June 1, 2023

Last Update Submit

June 11, 2023

Conditions

Outcome Measures

Primary Outcomes (13)

  • Isometric Mid-Thigh Pull (IMTP_RFD

    Customized IMTP test equipment and two force plates (type 9287BA, Kistler Instruments AG, Winterthur, Switzerland) were used. All participants stood with their feet the same width apart, and the rod was placed between the thighs, with the torso upright, the spine neutral, and the knee and hip angles at 140°, to familiarize the participants with the IMPT test method. The average absolute peak rate of force development (RFD) parameters were recorded.

    up to 6 weeks

  • Isometric Mid-Thigh Pull (IMTP)_relative peak force

    Customized IMTP test equipment and two force plates (type 9287BA, Kistler Instruments AG, Winterthur, Switzerland) were used. All participants stood with their feet the same width apart, and the rod was placed between the thighs, with the torso upright, the spine neutral, and the knee and hip angles at 140°, to familiarize the participants with the IMPT test method. The average absolute peak rate of force development (RFD) parameters were recorded.

    up to 6 weeks

  • Wingate Anaerobic Test (WAnT)_relative peak power

    After a standard warm-up, all subjects were assessed with the classical WAnT on a cycloergometer (Monark 894E, Varberg, Sweden) in a 30 s "go all out" ultramax test. The seat height was adjusted to the satisfaction of each participant, and toe clips prevented the feet from slipping off the pedals. Before the initial test, the subjects warmed up for 5 min, and the power was approximately 50 W. After the warm-up, two preparation exercises lasting 3 s, during which the actual test load was 3% of their own body weight, were applied to accustom the participant to resistance. The test started, and the resistance was set on the friction belt of the dynamometer. External loading was estimated individually at 5% body weight. The average relative peak power parameters were recorded.

    up to 6 weeks

  • Wingate Anaerobic Test (WAnT)_relative mean power

    After a standard warm-up, all subjects were assessed with the classical WAnT on a cycloergometer (Monark 894E, Varberg, Sweden) in a 30 s "go all out" ultramax test. The seat height was adjusted to the satisfaction of each participant, and toe clips prevented the feet from slipping off the pedals. Before the initial test, the subjects warmed up for 5 min, and the power was approximately 50 W. After the warm-up, two preparation exercises lasting 3 s, during which the actual test load was 3% of their own body weight, were applied to accustom the participant to resistance. The test started, and the resistance was set on the friction belt of the dynamometer. External loading was estimated individually at 5% body weight. The average relative mean power parameters were recorded.

    up to 6 weeks

  • Wingate Anaerobic Test (WAnT)_fatigue index

    After a standard warm-up, all subjects were assessed with the classical WAnT on a cycloergometer (Monark 894E, Varberg, Sweden) in a 30 s "go all out" ultramax test. The seat height was adjusted to the satisfaction of each participant, and toe clips prevented the feet from slipping off the pedals. Before the initial test, the subjects warmed up for 5 min, and the power was approximately 50 W. After the warm-up, two preparation exercises lasting 3 s, during which the actual test load was 3% of their own body weight, were applied to accustom the participant to resistance. The test started, and the resistance was set on the friction belt of the dynamometer. External loading was estimated individually at 5% body weight. The average fatigue index parameters were recorded.

    up to 6 weeks

  • The Countermovement Jump (CMJ) Test

    The CMJ test is a practical, effective, reliable, and simple method of measuring lower limb strength, which is related to the maximum speed, strength and explosive force of the lower limbs. For this test, participants stood on the Kistler force measurement platform (9260AA, Kistler Co., Ltd., Switzerland) on both feet and performed to inspection. During the test, they were asked to put their hands on their hips and remain on the platform. After that, they were asked to squat down until the knees bent 90 degrees and then to immediately jump as high as possible. The average power (MF), were recorded during the jump. Each participant repeated the test 3 times, and CMJ data were obtained at the designated points. The instrument was calibrated for each individual's weight.

    up to 6 weeks

  • VO2max

    To evaluate the maximum oxygen consumption and exercise performance, we used a treadmill (Pulsar, h/p/cosmos, Nussdorf-Traunstein, Germany) and an automatic breathing analyzer (Vmax 29c, Sensor Medics, Yorba Linda, CA, USA). In addition, a polar heart rate device was used to monitor the heart rate (HR). The speed range of the treadmill was set to 7.2 km/h and increased by 1.8 km/h every 2 min until fatigue, according to Bruce's protocol. When the breathing exchange rate (the volume ratio of carbon dioxide produced to oxygen consumed, VCO2/VO2) was higher than 1.10 and reached the maximum heart rate (maximum heart rate = 220 - age), oxygen consumption was considered to be maximum. The three highest VO2max peak were averaged to obtain the VO2max values of the individual volunteers.

    up to 6 weeks

  • Muscle composition_muscle thickness

    Use muscular ultrasound (BenQ T3300) to scan muscle thickness

    up to 6 weeks

  • Muscle composition_fascia thickness

    Use muscular ultrasound (BenQ T3300) to scan fascia thickness

    up to 6 weeks

  • dual-energy X-ray absorptiometry, DXA

    A non-invasive dual-energy X-ray absorptive bone density testing room (Lunar iDXA, GE Healthcare, Chicago, IL, USA) was used for systemic body composition and bone density measurements. The subject was required to lie flat on the test bed, with their body at the center line, and their limbs within the detection range. Two different energy X-rays were used to scan the inspected part, then the scintillation detector received the X-rays that had penetrated the inspected part, and analyzed the obtained muscle mass

    up to 6 weeks

  • Body composition_body fat

    The multi-frequency principle was applied to measure body composition by using a bioelectrical impedance analyzer (BIA) on an InBody 570 device (In-body, Seoul, South Korea). To perform the measurements, after the subjects' palms and soles were removed from the sensors, the subjects stood on the footing electrodes and held the sensing handles with two hands. During the measurements, the subjects kept their arms open and left their bodies at an angle of 30° without speaking or moving. The subjects also fasted for at least 8 h before the test. The body fat were meansure

    up to 6 weeks

  • Body composition_muscle mass

    The multi-frequency principle was applied to measure body composition by using a bioelectrical impedance analyzer (BIA) on an InBody 570 device (In-body, Seoul, South Korea). To perform the measurements, after the subjects' palms and soles were removed from the sensors, the subjects stood on the footing electrodes and held the sensing handles with two hands. During the measurements, the subjects kept their arms open and left their bodies at an angle of 30° without speaking or moving. The subjects also fasted for at least 8 h before the test. The muscle mass were meansure

    up to 6 weeks

  • Grip strength

    Use the armed grip machine (T.K.K.5401, Takei Scientific Instruments Co.,Ltd, Niigata, Japan) to measure, hold each of the left and right hands three times until they are weak, and record the maximum value

    up to 6 weeks

Secondary Outcomes (10)

  • Safety assessment - AST

    up to 6 weeks

  • Safety assessment - ALT

    up to 6 weeks

  • Safety assessment - T-Cholesterol

    up to 6 weeks

  • Safety assessment - Uric Acid

    up to 6 weeks

  • Safety assessment - BUN

    up to 6 weeks

  • +5 more secondary outcomes

Study Arms (2)

Placebo

PLACEBO COMPARATOR

The placebo capsule contains microcrystalline cellulose, 2 caps daily use.

Other: Placebo

GKEX

EXPERIMENTAL

GKEX group. Probiotic capsules contain 10 billion CFU (colony forming units) of GKEX, , 2 caps daily use.

Dietary Supplement: GKEX

Interventions

GKEXDIETARY_SUPPLEMENT

GKEX group. Probiotic capsules contain 10 billion CFU (colony forming units) of GKEX, , 2 caps daily use.

GKEX
PlaceboOTHER

The placebo capsule contains microcrystalline cellulose, 2 caps daily use.

Placebo

Eligibility Criteria

Age20 Years - 39 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • The tissues and organs of the body are functioning normally
  • no disease, fatigue, or weakness
  • independent and flexible activities

You may not qualify if:

  • With a history of cardiovascular disease, hypertension, metabolic disease, asthma or cancer diagnosed by a physician
  • BMI≧27
  • Who have taken anti-inflammatory analgesics or acute and chronic diseases within one month, etc.,
  • The students and related stakeholders guided by the host of this plan
  • Who have the habit of smoking and drinking
  • Within two weeks Have used probiotic products in powder, capsule or tablet form (including yogurt, yogurt, Yakult and other related foods)
  • Food or allergic to lactic acid bacteria products
  • Have had hepatobiliary and gastrointestinal surgery within 2 years (except hernia and polypectomy)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Graduate Institute of Sports Science, National Taiwan Sport University

Taoyuan District, 33301, Taiwan

Location

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Distinguished Professor

Study Record Dates

First Submitted

June 1, 2023

First Posted

June 18, 2023

Study Start

July 4, 2022

Primary Completion

December 24, 2022

Study Completion

December 24, 2022

Last Updated

June 18, 2023

Record last verified: 2023-06

Data Sharing

IPD Sharing
Will not share

Locations