An interventional study of DOMS protocol in Muscle Soreness, Exercise and Respiratory Muscles, sponsored by Ankara Yildirim Beyazıt University. Completed at 2 sites in Turkey. Open to participants aged 18 Years to 24 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-03-14.
Sponsored by Ankara Yildirim Beyazıt University · Not applicable, Interventional, and Screening
The aim of the study was to determine whether delayed-onset muscle soreness (DOMS) in trunk muscles has an effect on respiratory function parameters, respiratory muscle strength, respiratory muscle endurance, and exercise capacity.
In 24 healthy university students was induced for the trunk muscles with a load equals to 80% of the maximum repetitive voluntary contraction. Pulmonary function parameters, respiratory muscle strength and endurance, exercise capacity, pain, fatigue, and dyspnea perception severity were recorded before DOMS and at the 24th and 48th hours after DOMS.
After DOMS, there is a decrease in respiratory performance values and exercise capacity of healthy individuals and athletes. Therefore, it should be taken into account that delayed muscle soreness before the competition may affect performance. It may be beneficial to take precautions for delayed muscle pain while creating training and exercise programs, and to create treatment programs in case of the emergence of DOMS.
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DOMS was induced for the trunk muscles with a load equals to 80% of the maximum repetitive voluntary contraction. Pulmonary function parameters, respiratory muscle strength and endurance, exercise capacity, pain, fatigue, and dyspnea perception severity were recorded before DOMS and at the 24th and 48th hours after DOMS.
Other: DOMS protocol
For a maximum repetition of the trunk muscles, two measurements were made with a 45-second rest interval.The values were recorded in Newtons by taking the maximum value of the two repetitions measured. DOMS was formed by eccentric contraction with 80% of this determined value.To generate DOMS in the trunk, participants were seated on the bench with the knees flexed at 90° and the soles of the feet in full contact with the floor, keeping the weight at 80% of the predetermined maximum repetition.The participants were asked to perform trunk extension with eccentric contraction of the trunk in 5 seconds, and trunk flexion with concentric contraction in 3 seconds.Two-minute rests between sets and 45-second rests between repetitions were given.The date and time of the created DOMS were recorded and the measurements were repeated at the 24th and 48th hours.
Pulmonary Function Tests (FVC)
Forced vital capacity (FVC) was evaluated. The volume of air that is exhaled quickly and strongly following a deep inspiration. Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used.
Time frame: Pulmonary function test measurements were made in all individuals at baseline.
Pulmonary Function Tests (FEV1)
Forced expiratory volume in the first second (FEV1) was evaluated. It is the volume of air expelled in the first second from the start of the forced vital capacity maneuver. It gives information about the restriction on major airlines in general.Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used. Individuals were asked to make a forced expiration after maximum inspiration.
Time frame: Pulmonary function test measurements were made in all individuals at baseline.
Pulmonary Function Tests (FEF25%-75%)
Flow rate value of forced expiratory volume (FEF25%-75%) was evaluated. It is the mean flow rate in 50% of the forced vital capacity maneuver. Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used. Individuals were asked to make a forced expiration after maximum inspiration.
Time frame: Pulmonary function test measurements were made in all individuals at baseline.
Pulmonary Function Tests (VC)
Vital capacity (VC) was evaluated. It is the volume of air in the lungs that varies between full inspiration and maximum expiration. It is possible to measure the volume of both a slow and vigorous exhalation after a deep inspiration.Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used.
Time frame: Pulmonary function test measurements were made in all individuals at baseline.
Pulmonary Function Tests (FVC)
Forced vital capacity (FVC) was evaluated. The volume of air that is exhaled quickly and strongly following a deep inspiration. Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used.
Time frame: Pulmonary function test measurements were made in all individuals at the 24th hours after the trunk-oriented DOMS.
Pulmonary Function Tests (FEV1)
Forced expiratory volume in the first second (FEV1) was evaluated. It is the volume of air expelled in the first second from the start of the forced vital capacity maneuver. It gives information about the restriction on major airlines in general.Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used. Individuals were asked to make a forced expiration after maximum inspiration.
Time frame: Pulmonary function test measurements were made in all individuals at the 24th hours after the trunk-oriented DOMS.
Pulmonary Function Tests (FEF25%-75%)
Flow rate value of forced expiratory volume (FEF25%-75%) was evaluated. It is the mean flow rate in 50% of the forced vital capacity maneuver. Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used. Individuals were asked to make a forced expiration after maximum inspiration.
Time frame: Pulmonary function test measurements were made in all individuals at the 24th hours after the trunk-oriented DOMS.
Pulmonary Function Tests (VC)
Vital capacity (VC) was evaluated. It is the volume of air in the lungs that varies between full inspiration and maximum expiration. It is possible to measure the volume of both a slow and vigorous exhalation after a deep inspiration.Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used.
Time frame: Pulmonary function test measurements were made in all individuals at the 24th hours after the trunk-oriented DOMS.
Pulmonary Function Tests (FVC)
Forced vital capacity (FVC) was evaluated. The volume of air that is exhaled quickly and strongly following a deep inspiration. Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used.
Time frame: Pulmonary function test measurements were made in all individuals at the 48th hours after the trunk-oriented DOMS.
Pulmonary Function Tests (FEV1)
Forced expiratory volume in the first second (FEV1) was evaluated. It is the volume of air expelled in the first second from the start of the forced vital capacity maneuver. It gives information about the restriction on major airlines in general.Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used. Individuals were asked to make a forced expiration after maximum inspiration.
Time frame: Pulmonary function test measurements were made in all individuals at the 48th hours after the trunk-oriented DOMS.
Pulmonary Function Tests (FEF25%-75%)
Flow rate value of forced expiratory volume (FEF25%-75%) was evaluated. It is the mean flow rate in 50% of the forced vital capacity maneuver. Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used. Individuals were asked to make a forced expiration after maximum inspiration.
Time frame: Pulmonary function test measurements were made in all individuals at the 48th hours after the trunk-oriented DOMS.
Pulmonary Function Tests (VC)
Vital capacity (VC) was evaluated. It is the volume of air in the lungs that varies between full inspiration and maximum expiration. It is possible to measure the volume of both a slow and vigorous exhalation after a deep inspiration.Test were performed using a portable spirometer (MIR Spirolab III srl, Italy). During the test, the subject was in a sitting position and their nose was clamped. The test were repeated three times and the best measurement value was used.
Time frame: Pulmonary function test measurements were made in all individuals at the 48th hours after the trunk-oriented DOMS.
Respiratory Muscle Strength Measurement
Respiratory muscle strength validity and reliability were demonstrated by measuring maximal inspiratory (MIP) and maximal expiratory (MEP) pressures with a portable intraoral pressure measuring device (MicroRPM Respiratory Muscle Testing, Germany). Measurements were made using a clamp that prevents nasal breathing and were performed 5 times until a difference of 5 cmH2O remained, with a 30-second rest period between measurements to record the best value, and the best result was recorded in cmH2O. The recorded values were calculated and recorded with the expected values according to age and gender.
Time frame: This test was carried out at baseline.
Respiratory Muscle Strength Measurement
Respiratory muscle strength validity and reliability were demonstrated by measuring maximal inspiratory (MIP) and maximal expiratory (MEP) pressures with a portable intraoral pressure measuring device (MicroRPM Respiratory Muscle Testing, Germany). Measurements were made using a clamp that prevents nasal breathing and were performed 5 times until a difference of 5 cmH2O remained, with a 30-second rest period between measurements to record the best value, and the best result was recorded in cmH2O. The recorded values were calculated and recorded with the expected values according to age and gender.
Time frame: This test was carried out at the 24th after DOMS.
Respiratory Muscle Strength Measurement
Respiratory muscle strength validity and reliability were demonstrated by measuring maximal inspiratory (MIP) and maximal expiratory (MEP) pressures with a portable intraoral pressure measuring device (MicroRPM Respiratory Muscle Testing, Germany). Measurements were made using a clamp that prevents nasal breathing and were performed 5 times until a difference of 5 cmH2O remained, with a 30-second rest period between measurements to record the best value, and the best result was recorded in cmH2O. The recorded values were calculated and recorded with the expected values according to age and gender.
Time frame: This test was carried out at 48th hours after DOMS.
Respiratory Muscle Endurance Test
Respiratory muscle endurance was evaluated with a threshold-loaded (constant) respiratory muscle trainer (Power Breathe®, POWERbreathe International Ltd. Warwickshire, England) with proven validity and reliability . In the evaluation, measurements were made in the upright sitting position in the chair while the nose of the individuals was closed with a clip. Initial workload was applied at 60% of the maximal inspiratory pressure. Participants were asked to continue inspiring despite constant inspiratory workload. The respiratory muscle endurance value was obtained by multiplying the maximum workload of the test that can be sustained for at least one minute. Individuals were told that the test could be terminated if severe fatigue and extreme shortness of breath were experienced during the test. The results of the test were recorded.
Time frame: This test was performed at baseline.
Respiratory Muscle Endurance Test
Respiratory muscle endurance was evaluated with a threshold-loaded (constant) respiratory muscle trainer (Power Breathe®, POWERbreathe International Ltd. Warwickshire, England) with proven validity and reliability . In the evaluation, measurements were made in the upright sitting position in the chair while the nose of the individuals was closed with a clip. Initial workload was applied at 60% of the maximal inspiratory pressure. Participants were asked to continue inspiring despite constant inspiratory workload. The respiratory muscle endurance value was obtained by multiplying the maximum workload of the test that can be sustained for at least one minute. Individuals were told that the test could be terminated if severe fatigue and extreme shortness of breath were experienced during the test. The results of the test were recorded.
Time frame: This test was performed at 24 hours after DOMS.
Respiratory Muscle Endurance Test
Respiratory muscle endurance was evaluated with a threshold-loaded (constant) respiratory muscle trainer (Power Breathe®, POWERbreathe International Ltd. Warwickshire, England) with proven validity and reliability . In the evaluation, measurements were made in the upright sitting position in the chair while the nose of the individuals was closed with a clip. Initial workload was applied at 60% of the maximal inspiratory pressure. Participants were asked to continue inspiring despite constant inspiratory workload. The respiratory muscle endurance value was obtained by multiplying the maximum workload of the test that can be sustained for at least one minute. Individuals were told that the test could be terminated if severe fatigue and extreme shortness of breath were experienced during the test. The results of the test were recorded.
Time frame: This test was performed at 48 hours after DOMS.
Exercise Capacity
The exercise capacity of the individuals was evaluated with the 6-Minute Walk Test (6 MWT), a submaximal test with high validity and reliability (ICC=0.94). 6MWT, made according to the American Thoracic Society guidlines.The distance covered in a 6-minute walk was calculated from the number of laps and meters. Values were recorded as a percentage of expected values for age and sex.
Time frame: This test was carried out at baseline.
Exercise Capacity
The exercise capacity of the individuals was evaluated with the 6-Minute Walk Test (6 MWT), a submaximal test with high validity and reliability (ICC=0.94). 6MWT, made according to the American Thoracic Society guidlines.The distance covered in a 6-minute walk was calculated from the number of laps and meters. Values were recorded as a percentage of expected values for age and sex.
Time frame: This test was carried out at the 24th hours after DOMS.
Exercise Capacity
The exercise capacity of the individuals was evaluated with the 6-Minute Walk Test (6 MWT), a submaximal test with high validity and reliability (ICC=0.94). 6MWT, made according to the American Thoracic Society guidlines.The distance covered in a 6-minute walk was calculated from the number of laps and meters. Values were recorded as a percentage of expected values for age and sex.
Time frame: This test was carried out at 48th hours after DOMS.
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Ankara Yildirim Beyazıt University