Comparison of EMG Activity Between Maximal Manual Muscle Testing and Cybex Maximal Isometric Testing of the Quadriceps Femoris

Lin, Hui; Hsu, Ar-Tyan; Chang, Jia Hao; Chien, Chi-Sheng; Chang, Guan‐Liang

doi:10.1016/s0929-6646(08)60131-x

Cited by 21 publications

(21 citation statements)

References 17 publications

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“…No validated measures for individual toe plantar flexor strengths are available. A manual muscle-testing method is commonly used to measure strength in the clinical setting 28) . However, this method does not measure toe strength quantitatively.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Toe Plantar Flexors Strength and Balancing Ability between Elderly Fallers and Non-fallers

et al. 2011

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Abstract.[Purpose] We compared the differences in individual toe flexor muscle strength and balancing ability between elderly fallers and non-fallers and determined the correlation between individual toe flexor muscle strength and the functional reach test (FRT).[Subjects] Thirty community-dwelling older adults (15 fallers and 15 age-and sexmatched non-fallers) between 65 and 83 years of age participated in this study.[Method] Individual toe flexor muscle strength was measured using a dynamometer, and balance ability was assessed with the FRT, Berg balance scale, and a sensory organization test (SOT).[Results] The hallux and second toe flexor muscle strengths in the non-faller group were significantly stronger bilaterally than those in the faller group, whereas no significant differences in the third and fourth toe flexor muscle strengths were found. The individual toe plantar flexor muscle strengths were moderately correlated with FRT(r = 0.489-0.765). The non-faller group showed significantly greater balance ability in the FRT and SOT than the faller group.[Conclusion] The results of this study suggest that the force-generating capability of the hallux and second toe flexor muscle are related to the incidence of falls among elderly individuals.

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Section: Discussionmentioning

confidence: 99%

Comparison of Toe Plantar Flexors Strength and Balancing Ability between Elderly Fallers and Non-fallers

et al. 2011

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“…A single reference electrode was placed over the tibial tuberosity of the affected limb. Before recording EMG, each subject was instructed to practice each of the MVIC tests, which were performed in the manual muscle testing position 21) . After resting for five minutes, the subject performed maximum-effort knee extension at 45° of knee flexion, which was measured with a goniometer against the resistance of an instructor for five seconds.…”

Section: Methodsmentioning

confidence: 99%

Effect of a Complex Exercise Program for the Lower Extremities on Quadriceps Activity and Pain of Elderly Patients with Knee Osteoarthritis: a Pilot Study

Lim

Lee

et al. 2013

J Phys Ther Sci

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Abstract. [Purpose] This study was done to determine the effect of a complex exercise on quadriceps activity and pain of elderly patients with knee osteoarthritis (OA) in a clinical setting.[Subjects] Ttwelve subjects over the age of 65, who were diagnosed with knee OA and hospitalized at a rehabilitation facility in the Republic of Korea, participated in this study.[Methods] All participants were supervised by an expert. They performed a program which consisted of stretch and strength exercises with traditional therapy for 10 weeks. The main outcome measures were assessed a pain scale and EMG data (%MVIC) of the rectus femoris (RF), vastus lateralis (VL), and vastus medialis (VM) at baseline, after 5 weeks of exercise, and after 10 weeks of exercise.[Results] There was no significant difference between the male and female groups in pain or quadriceps activity. After the 10-week intervention, all participants showed improvement of RF, VL and VM activities and had decreased knee pain.[Conclusions] Older patients with OA showed a reduction in knee pain and improvement quadriceps activity after performing a complex exercise program that might help to stabilize the knee.

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“…Hence, comparisons of surface EMG values between and within individuals should be approached cautiously. EMG normalization is commonly used to improve reliability by decreasing variation within and between individuals in EMG studies 4,5) . Maximal voluntary isometric contraction (MVIC) is the most common method of EMG normalization [6][7][8] , and is used as the standard value when comparing different subjects, days, studies, and muscles 9) .…”

Section: Introductionmentioning

confidence: 99%

“…MMT is the most widely used standard method for assessing muscle strength in clinical settings 4,14) . The patient's strength is graded according to the muscle's ability to move against gravity, or to resist a manual force applied by the examiner using one hand with the other hand stabilizing the joint 15,16) .…”

Section: Introductionmentioning

confidence: 99%

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Concurrent Validity by Comparing EMG Activity between Manual Muscle Testing, Handheld Dynamometer, and Stationary Dynamometer in Testing of Maximal Isometric Quadriceps Contraction

et al. 2012

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Abstract.[Purpose] The purpose of this study was to establish the concurrent validity of electromyography (EMG) activity and muscle strength scores obtained by manual muscle testing (MMT), handheld dynamometer (HHD), and the gold standard stationary dynamometer (SD).[Subjects] Forty healthy young adults (17 men, 23 women) volunteered to participate in this study.[Methods] Subjects performed maximal voluntary isometric contraction (MVIC) of the quadriceps for 5 seconds in three successive trials. Surface EMG was used for recording the muscle activity during the maximal MMT, HHD, and SD measurements.[Results] The mean and peak EMG amplitudes (ICC 3,k = 0.968 to 0.980) of the three MVIC methods and muscle strength scores (Pearson r = 0.868) measured by HHD and SD showed good concurrent validity. The intra-trial reliability of mean EMG activity was also good (ICC 3,1 = 0.960 to 0.989), reflecting consistent measurement between trials.[Conclusion] Our EMG results imply that MMT and HHD are useful and simple methods of measuring MVIC for EMG normalization. Considering cost, time, and clinical utility, we suggest that the use of HHD to measure MVIC for EMG normalization is highly valuable and should generate more meaningful information associated with pathological conditions or interventions for all patients.

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Comparison of EMG Activity Between Maximal Manual Muscle Testing and Cybex Maximal Isometric Testing of the Quadriceps Femoris

Cited by 21 publications

References 17 publications

Comparison of Toe Plantar Flexors Strength and Balancing Ability between Elderly Fallers and Non-fallers

Comparison of Toe Plantar Flexors Strength and Balancing Ability between Elderly Fallers and Non-fallers

Effect of a Complex Exercise Program for the Lower Extremities on Quadriceps Activity and Pain of Elderly Patients with Knee Osteoarthritis: a Pilot Study

Concurrent Validity by Comparing EMG Activity between Manual Muscle Testing, Handheld Dynamometer, and Stationary Dynamometer in Testing of Maximal Isometric Quadriceps Contraction

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