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Reliability and validity of a wearable electromyography system in individuals with patellofemoral pain syndrome

Is wearable electromyography system (Mshorts) a reliable and valid tool for assessing individuals with and without patellofemoral pain?

Status
Completed
Phases
Unknown
Study type
Observational
Source
ANZCTR
Registry ID
ACTRN12615001030561
Enrollment
40
Registered
2015-10-01
Start date
2015-11-17
Completion date
2015-12-13
Last updated
2020-01-13

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

Conditions

None listed

Brief summary

The purpose of this study is to analyze the reliability and validity of the Mshorts (a wearable EMG) in individuals with patellofemoral pain syndrome and those with no knee pain. We hypothesized that the Mshorts is reliable and accurate tool to assess muscle activation in individuals with and without patellofemoral pain syndrome.

Interventions

Purpose of this study is to analyse the reliability and validity of the Mshorts (a wearable EMG) in individuals with patellofemoral pain syndrome and those with no knee pain. Therefore, volunteers will wear a pair of shorts with sensors that measure muscle contraction (the Mshorts) and they will perform three tasks, including 10 repetitions of each: (1) full squat test, (2) stair climbing and (3) single leg squat test. Muscle activation of the quadriceps and hamstrings will be analyzed. The part

Purpose of this study is to analyse the reliability and validity of the Mshorts (a wearable EMG) in individuals with patellofemoral pain syndrome and those with no knee pain. Therefore, volunteers will wear a pair of shorts with sensors that measure muscle contraction (the Mshorts) and they will perform three tasks, including 10 repetitions of each: (1) full squat test, (2) stair climbing and (3) single leg squat test. Muscle activation of the quadriceps and hamstrings will be analyzed. The participants will perform trials in the same manner on two different days for reliability analysis, with an interval of 2 to 7 days between the 2 collection dates.

Sponsors

Deisi Ferrari
Lead SponsorIndividual

Eligibility

Sex/Gender
All
Age
18 Years to 40 Years
Healthy volunteers
Yes

Inclusion criteria

A. Participant is willing and able to give informed consent for participation in the study. B. Male or Female, aged 18 to 40 years old. C. Diagnosed with PFPS: complaining of knee pain for at least 1 month with an insidious start and healthy volunteers with no knee pain D. Participants able to perform physical activity such as stair climbing and squat tests. E. Able and willing to comply with all study requirements. F. Participants with PFPS must present: (1) anterior knee pain during at least 2 of the following activities: kneeling, squatting, climbing stairs, jumping, running, and remaining seated; (2) symptoms for at least 1 month with an insidious start; (3) pain during patellar palpation; (4) pain level up to 3cm on a 10-cm visual analogic scale (VAS) in the previous week; and (5) at least 3 positive clinical signs of the following tests: Clarke’s sign, Waldron, McConnell, Zohler’s sign, Noble compression, Q angle higher than 18 degrees, and patella in the medial or lateral position. The participants need to fulfil all 5 requirements to be allocated to the PFPS group and could not present any signs or symptoms of PFPS or other disease to be allocated to the control group (pain-free).

Exclusion criteria

A. Pregnancy during the course of the study. B. Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the study, or may influence the result of the study, or the participant’s ability to participate in the study. C. Participants are not able to perform the tests and present other condition as patellar tendon or meniscus tears, ligament tears, bilateral knee pain, bursitis, chondral lesions or osteoarthritis, dislocation or patellar subluxation, presence of neurological diseases, or inflammatory processes D. Participants who received oral steroids, steroid injections, opiate treatment, acupuncture or physiotherapy during the last 6 months.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026