Electrical Muscle StimulationNCT06036953
Electrical Muscle Stimulation on Muscle Mass, Strength, and Body Composition
A study testing electrical muscle stimulation in people with Electrical Muscle Stimulation and Exercise, run by National Taiwan Sport University at 1 site in Taiwan.
Trial summary
In recent years, electrical muscle stimulation (EMS) devices have been developed as a complementary training technique that is novel, attractive, and time-saving for physical fitness and rehabilitation. Read more about this study
- Who is it for?
- Ages 20 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Electrical Muscle Stimulation, Exercise, Resistance Training
- What is being tested?
- electrical muscle stimulation
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 28 participants
- Where
- 1 siteTaiwan
- Study dates
- 15 Nov 2021to 23 Nov 2022
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- healthy
Who cannot join
- smoking or drinking habits
- cardiovascular disease
- neuromuscular disease
- metabolic disease
- asthma
- pregnancy
- body mass index (BMI) over 27
Trial locations and contacts
1 site in 1 country.
Taiwan1 site
Graduate Institute of Sports Science, National Taiwan Sport University
Taoyuan, 33301
About this study
Official title: Effect of 8-week Frequency-specific Electrical Muscle Stimulation Combined With Resistance Exercise Training on Muscle Mass, Strength, and Body Composition in Men and Women: A Feasibility and Safety Study
In recent years, electrical muscle stimulation (EMS) devices have been developed as a complementary training technique that is novel, attractive, and time-saving for physical fitness and rehabilitation. While it is known that EMS training can improve muscle mass and strength, most studies have focused on the elderly or specific patient populations. The aim of this study was to investigate the effects of frequency-specific EMS combined with resistance exercise training for 8 weeks on muscle mass, strength, power, body composition, and parameters related to exercise fatigue. Additionally, we aimed to evaluate the feasibility and safety of EMS as an exercise aid to improve body composition. We recruited 14 male and 14 female subjects who were randomly assigned to two groups with gender parity (7 male and 7 female/group): (1) no EMS group and (2) daily EMS group. Blood biochemical routine analysis was performed every 4 weeks from pre-intervention to post-intervention, and body composition, muscle strength, and explosive power were evaluated 8 weeks before and after the intervention. We also performed an exercise challenge analysis of fatigue biochemical indicators after 8 weeks of intervention.
- Conditions
- Electrical Muscle Stimulation, Exercise, Resistance Training
- Being tested
- electrical muscle stimulation
- Medical subject headings
- Motor Activity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
electrical muscle stimulationDevice
The electric muscle stimulator (EMS) used in this study was from Funcare (Funcare Co., Ltd, Taichung, Taiwan). EMS electrodes were attached to the biceps of both hands, the abdomen, and the quadriceps of both legs sequentially. Each part was stimulated once a day for 30 minutes.
| Study group | Role | What they receive |
|---|---|---|
| No EMS | No intervention | Not described |
| EMS | Experimental | Not described Receives: Device: electrical muscle stimulation |
What is being measured
The primary outcome is the main question the study is designed to answer.
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.
Measured: After 8 weeks of EMS
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
Measured: up to 8 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
Measured: up to 8 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
Measured: up to 8 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.
Measured: up to 8 weeks
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), 30 (E30) min during the exercise phase, and 60 (R60) 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).
Measured: After 8 weeks of EMS
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), 30 (E30) min during the exercise phase, and 60 (R60) 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).
Measured: After 8 weeks of EMS
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), 30 (E30) min during the exercise phase, and 60 (R60) 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).
Measured: After 8 weeks of EMS
Secondary outcomes (7)
Safety assessment - AST
Safety is assessed function of liver such as AST (8-38 IU/L).
Measured: baseline, 4 week and 8 week
Safety assessment - ALT
Safety is assessed function of liver such as ALT (4-44 IU/L).
Measured: baseline, 4 week and 8 week
Safety assessment - BUN
Safety is assessed function of kidney such as Bun (6-20 mg/dl)
Measured: baseline, 4 week and 8 week
Safety assessment - Creatinine
Safety is assessed function of kidney such as Creatinine (0.6-1.3 mg/dl)
Measured: baseline, 4 week and 8 week
Safety assessment - Uric Acid
Safety is assessed function of kidney such as Uric Acid (3.4-7.6 mg/dl)
Measured: baseline, 4 week and 8 week
Safety assessment - total protein
Safety is assessed function of kidney such as total protein (6.4-8.9 g/dl)
Measured: baseline, 4 week and 8 week
Safety assessment - free fatty acid
Safety is assessed function of lipid metabolism such as free fatty acid (0.1-0.9 mmol/L)
Measured: baseline, 4 week and 8 week
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Sep 2023
- Study start15 Nov 2021
- Primary completion14 Jan 2022
- Study completion23 Nov 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Electrical Muscle StimulationStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 28 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Taiwan Sport University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Chi-Chang Huang, National Taiwan Sport University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06036953
- Sponsor's protocol ID
- 21-034-A2
- Status last verified
- Sep 2023
- First submitted
- 7 Sep 2023
- Last updated
- 14 Sep 2023
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 14 Sep 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of 8-week Frequency-specific Electrical Muscle Stimulation Combined With Resistance Exercise Training on Muscle Mass, Strength, and Body Composition in Men and Women: A Feasibility and Safety Study
- ClinicalTrials.gov ID
- NCT06036953
- Acronym / sponsor ID
- 21-034-A2
- Conditions
- Electrical Muscle Stimulation, Exercise, Resistance Training
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 28 participants (actual)
- Lead sponsor
- National Taiwan Sport UniversityUniversity, hospital or other
- Study start
- 15 Nov 2021 (actual)
- Primary completion
- 14 Jan 2022 (actual)
- Study completion
- 23 Nov 2022 (actual)
- First posted
- 14 Sep 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
In recent years, electrical muscle stimulation (EMS) devices have been developed as a complementary training technique that is novel, attractive, and time-saving for physical fitness and rehabilitation. While it is known that EMS training can improve muscle mass and strength, most studies have focused on the elderly or specific patient populations. The aim of this study was to investigate the effects of frequency-specific EMS combined with resistance exercise training for 8 weeks on muscle mass, strength, power, body composition, and parameters related to exercise fatigue. Additionally, we aimed to evaluate the feasibility and safety of EMS as an exercise aid to improve body composition. We recruited 14 male and 14 female subjects who were randomly assigned to two groups with gender parity (7 male and 7 female/group): (1) no EMS group and (2) daily EMS group. Blood biochemical routine analysis was performed every 4 weeks from pre-intervention to post-intervention, and body composition, muscle strength, and explosive power were evaluated 8 weeks before and after the intervention. We also performed an exercise challenge analysis of fatigue biochemical indicators after 8 weeks of intervention.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| No EMS | No intervention | – |
| EMS | Experimental | Device: electrical muscle stimulation |
Who may qualify
- Ages
- 20 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- healthy
Key exclusion criteria (7 listed)
- smoking or drinking habits
- cardiovascular disease
- neuromuscular disease
- metabolic disease
- asthma
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| electrical muscle stimulationThe electric muscle stimulator (EMS) used in this study was from Funcare (Funcare Co., Ltd, Taichung, Taiwan). EMS electrodes were attached to the biceps of both hands, the abdomen, and the quadriceps of both legs sequentially. Each part was stimulated once a day for 30 minutes. | Device | EMS |
Primary outcome
VO2max
Time frame: After 8 weeks of EMS
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.
Body composition_body fat
Time frame: up to 8 weeks
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
Body composition_muscle mass
Time frame: up to 8 weeks
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
Grip strength
Time frame: up to 8 weeks
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
The Countermovement Jump (CMJ) Test
Time frame: up to 8 weeks
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.
Clinical Biochemistry of lactate level
Time frame: After 8 weeks of EMS
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), 30 (E30) min during the exercise phase, and 60 (R60) 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 ammonia level
Time frame: After 8 weeks of EMS
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), 30 (E30) min during the exercise phase, and 60 (R60) 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).
Clinical Biochemistry of glucose level
Time frame: After 8 weeks of EMS
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), 30 (E30) min during the exercise phase, and 60 (R60) 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).
7 secondary outcomes
Safety assessment - AST
Time frame: baseline, 4 week and 8 week
Safety assessment - ALT
Time frame: baseline, 4 week and 8 week
Safety assessment - BUN
Time frame: baseline, 4 week and 8 week
Safety assessment - Creatinine
Time frame: baseline, 4 week and 8 week
Safety assessment - Uric Acid
Time frame: baseline, 4 week and 8 week
Safety assessment - total protein
Time frame: baseline, 4 week and 8 week
Safety assessment - free fatty acid
Time frame: baseline, 4 week and 8 week
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Sep 2023.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing electrical muscle stimulation in people with Electrical Muscle Stimulation and Exercise, run by National Taiwan Sport University at 1 site in Taiwan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 14 Sep 2023. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
VO2max (time frame: After 8 weeks of EMS). The study lists 8 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Sep 2023.