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Cervical Activation During Elastic and Manual Resistance

EMG Activation of Cervical Musculature During Therapeutic Exercise With Thera-Band(R) Resistance Versus Manual Resistance

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02124304
Acronym
CervEMG
Enrollment
30
Registered
2014-04-28
Start date
2014-04-30
Completion date
2014-08-31
Last updated
2016-02-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cervical Pain

Keywords

Sternocleidomastoid, Neck pain, EMG, Perceived Exertion, Thera-Band, Cervical Paraspinals

Brief summary

Cervical pain is a condition that affects 14.6% of all adults annually. Of this annual prevalence, 37.3% experience persistent neck pain with periodic recurring episodes. The purpose of this study is to compare muscle activation patterns of the cervical musculature during exercises with elastic versus manual resistance in a neck pain and asymptomatic populations. Methods: A convenience sample of 15 healthy, physically active participants and 15 current patients diagnosed with non-radicular cervical pain will be recruited. Exclusionary criteria will include: current cervical or upper extremity injury (healthy group), history of neck surgery, corticosteroid treatment within the last two weeks, and radicular signs or symptoms. Surface electromyography will be used to quantify the activity level of the bilateral SCM, AS, Cervical Paraspinal (CP), and the Upper Trapezius (UT) muscles while performing a series of 6 exercises with elastic resistance using Thera-Band® Resistance Bands and manual resistance. The area will be prepped and surface electrodes placed on the corresponding muscles. The movement will be standardized by using the peak activation (PA) of each muscle during full flexion-extension movement to create a percentage of peak activation (%PA). The testing battery will consist of 6 exercises with elastic resistance and manual resistance, totaling 12 different trials. Each trial will involve 5 repetitions, each held for 5 seconds. The exercises will include cervical: extension, flexion, left rotation, right rotation, left side bending, and right side bending. The men will use the green and women will use the red Thera-Band® Resistance Band. The order of exercises will be randomized in to two parts to minimize the effect of fatigue. First, cervical flexion and extension with manual and elastic resistance will be randomized. Secondly, the remaining 8 exercises will be randomized. Following each exercise, the patient will rate their perceived level of exertion on the Thera-band® Resistance Intensity Scale for Exercise (RISE).

Interventions

DEVICENeck exercises using both manual and Thera-Band elasatic resistance

Exercises will include cervical flexion and extension, and cervical right and left side-bending, and rotation. All 6 exercises will be done with both manual and elastic (Thera-Band) resistance.Manual Resistance is applied by the subject placing their own hand on their head and pushing in to it. Thera-Band bands will be used to provide elastic resistance

Sponsors

Sport and Spine Rehab Clinical Research Foundation
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* healthy physically active subjects (healthy group) * patients diagnosed with non-radicular cervical neck pain (neck pain group) * 18-65

Exclusion criteria

* current cervical or upper extremity injury (healthy group) * history of neck surgery * corticosteroid treatment within the last two weeks * radicular signs or symptoms

Design outcomes

Primary

MeasureTime frameDescription
Percent of Peak Activation (%PA)One 1 hour session8 muscles during 12 exercises were analyzed in 30 subjects, totaling 2880 data points. At the beginning of the study, peak activation (PA) was assessed for each muscle during full flexion-extension, used as a reference exercise. For each subject, the EMG signals of the muscles during the 12 exercises were smoothed, rectified and analyzed using a root-mean-square algorithm and the greatest activation of each muscle was used. After the PA for each muscle was determined, it was compared to the PA of the reference exercise for the respective muscle group, and expressed as a percent of the peak activation (%PA). In some cases the %PA is greater than 100%. This is possible as the PA was assessed during a full flexion-extension movement. During an exercise some muscles generated greater PA and therefore when the calculations were performed the %PA was greater than 100%. Due to the extensive amount of data, we have provided the Left Cervical Paraspinals %PA results for each exercise.

Secondary

MeasureTime frameDescription
Perceived Exertion12 exercises during one 1 hour sessionThera-Band(R) RISE (Resistance Intensity Scale for Exercise) Scale to measure amount of perceived exertion during resistance band exercises. Participants were asked to rate the intensity of an exercise on a scale from 0 to 10, 0 being no resistance and 10 being the maximum resistance.

Countries

United States

Participant flow

Participants by arm

ArmCount
Cervical Neck Pain
Thera-Band elastic and manual resistance neck exercises for neck strengthening Neck exercises using both manual and Thera-Band elasatic resistance: Exercises will include cervical flexion and extension, and cervical right and left side-bending, and rotation. All 6 exercises will be done with both manual and elastic (Thera-Band) resistance.Manual Resistance is applied by the subject placing their own hand on their head and pushing in to it. Thera-Band bands will be used to provide elastic resistance
15
Healthy
Thera-Band elastic and manual resistance neck exercises for neck strengthening Neck exercises using both manual and Thera-Band elasatic resistance: Exercises will include cervical flexion and extension, and cervical right and left side-bending, and rotation. All 6 exercises will be done with both manual and elastic (Thera-Band) resistance.Manual Resistance is applied by the subject placing their own hand on their head and pushing in to it. Thera-Band bands will be used to provide elastic resistance
15
Total30

Baseline characteristics

CharacteristicCervical Neck PainHealthyTotal
Age, Continuous31.8 years28.1 years29.95 years
Sex: Female, Male
Female
9 Participants6 Participants15 Participants
Sex: Female, Male
Male
6 Participants9 Participants15 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
0 / 150 / 15
serious
Total, serious adverse events
0 / 150 / 15

Outcome results

Primary

Percent of Peak Activation (%PA)

8 muscles during 12 exercises were analyzed in 30 subjects, totaling 2880 data points. At the beginning of the study, peak activation (PA) was assessed for each muscle during full flexion-extension, used as a reference exercise. For each subject, the EMG signals of the muscles during the 12 exercises were smoothed, rectified and analyzed using a root-mean-square algorithm and the greatest activation of each muscle was used. After the PA for each muscle was determined, it was compared to the PA of the reference exercise for the respective muscle group, and expressed as a percent of the peak activation (%PA). In some cases the %PA is greater than 100%. This is possible as the PA was assessed during a full flexion-extension movement. During an exercise some muscles generated greater PA and therefore when the calculations were performed the %PA was greater than 100%. Due to the extensive amount of data, we have provided the Left Cervical Paraspinals %PA results for each exercise.

Time frame: One 1 hour session

ArmMeasureGroupValue (MEAN)
Cervical PainPercent of Peak Activation (%PA)Flexion Manual51.72 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Extension Manual88.1 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Flexion Elastic65.68 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Extension Elastic60.60 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Right Rotation Manual61.02 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Left Rotation Manual108.44 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Right Rotation Elastic61.45 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Left Rotation Elastic81.53 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Right SideBending Manual62.33 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Left SideBending Manual100.10 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Right SideBending Elastic57.66 Percentage of Peak Activation (%PA)
Cervical PainPercent of Peak Activation (%PA)Left SideBending Elastic55.44 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Right SideBending Elastic65.69 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Flexion Manual61.20 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Right Rotation Elastic70.70 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Extension Manual80.80 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Left SideBending Manual115.60 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Flexion Elastic86.81 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Left Rotation Elastic103.66 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Extension Elastic71.9 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Left SideBending Elastic84.95 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Right Rotation Manual68.99 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Right SideBending Manual66.48 Percentage of Peak Activation (%PA)
HealthyPercent of Peak Activation (%PA)Left Rotation Manual180.20 Percentage of Peak Activation (%PA)
Secondary

Perceived Exertion

Thera-Band(R) RISE (Resistance Intensity Scale for Exercise) Scale to measure amount of perceived exertion during resistance band exercises. Participants were asked to rate the intensity of an exercise on a scale from 0 to 10, 0 being no resistance and 10 being the maximum resistance.

Time frame: 12 exercises during one 1 hour session

ArmMeasureGroupValue (MEAN)
Cervical PainPerceived ExertionRight Rotation Elastic3.4 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionRight Rotation Manual4.5 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionLeft Rotation Elastic4 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionFlexion Elastic4.6 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionRight SideBending Manual4.6 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionFlexion Manual4.9 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionLeft SideBending Manual3.9 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionExtension Elastic4.1 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionRight SideBending Elastic4.1 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionLeft Rotation Manual4.5 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionLeft SideBending Elastic4.1 units on a scale, ranging from 0 to 10
Cervical PainPerceived ExertionExtension Manual3.5 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionLeft SideBending Elastic3.2 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionFlexion Manual4.1 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionExtension Manual3.5 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionFlexion Elastic4.5 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionExtension Elastic3.3 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionLeft Rotation Manual3.3 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionRight Rotation Elastic3.1 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionLeft Rotation Elastic3.1 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionRight SideBending Manual3.9 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionLeft SideBending Manual3.5 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionRight SideBending Elastic3.5 units on a scale, ranging from 0 to 10
HealthyPerceived ExertionRight Rotation Manual3.5 units on a scale, ranging from 0 to 10

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026