Validity and Reliability of a New Device (WIMU®) for Measuring Hamstring Muscle Extensibility

Muyor, José M.

doi:10.1055/s-0043-108998

Cited by 15 publications

(25 citation statements)

References 38 publications

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“…In addition, the ICC and R 2 for both paces were greater than 0.96 (p < 0.001). A previous analysis of the concurrent validity of WIMU Pro for the analysis of the range of motion during flexion and extension of the hip in a straight leg raise test [29] found similar results (difference = 0.5 • , ICC = 0.99, and R 2 = 0.99), although the SEM was lower (0.05).…”

Section: Discussionmentioning

confidence: 60%

“…Other researchers who have analyzed the reliability of gold standard technology for analyzing the range of motion of the hip [36] found an ICC of 0.92, CV of 3.6 • , and SEM of 1.9 • . A previous study of the reliability of the WIMU Pro device when used to measure the range of motion in hip flexion-extension [29] reported an ICC of 0.984, CV of 0.01%, and SEM of 0.31 • .…”

Section: Discussionmentioning

confidence: 98%

“…The test-retest reliability was analyzed with a five-second break. As this is the first study to analyze the validity and reliability of an inertial device for monitoring range of motion at the pelvis during sexual activity in men and women, the results could only be compared with previous research on the validity or reliability of similar devices testing different variables and a similar range of motion (same axis of movement) [21,29,[31][32][33][34][35][36]. Further research on the validity and reliability of other devices for monitoring range of motion at the pelvis during sexual activity is needed to make it easier to compare systems.…”

Section: Discussionmentioning

confidence: 99%

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Validity and Reliability of a New Inertial Device for Monitoring Range of Motion at the Pelvis during Sexual Intercourse

Oliva-Lozano

Martín-Fuentes

Muyor

2020

IJERPH

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To understand the physical demands of sexual intercourse, it is necessary to monitor the kinematic parameters of this activity using relatively non-invasive technology. The aims of this study are to analyze the validity and reliability of an inertial device for monitoring the range of motion at the pelvis during simulated intercourse and compare the range of motion (ROM). Twenty-six adults were monitored during intercourse using an inertial device (WIMU) and a motion capture system (gold standard) in a test that consisted of 4 sets of 20 simulated in–out cycles (IOC) in missionary and cowgirl positions. Men and women were tested separately in a laboratory setting for simulated intercourse aims. There were no differences between the WIMU and the gold standard system at fast pace (p > 0.05), whereas there were differences at slow pace (~2.04°; p ≤ 0.05; d = 0.17). Intraclass correlation coefficients (ICCs) for the relationship between systems was very close to 1 at both paces (slow: 0.981; fast: 0.998). The test–retest reliability analysis did not show any difference between sets of measurements. In conclusion, WIMU could be considered as a valid and reliable device for IOC range of motion monitoring during sexual intercourse in missionary and cowgirl positions.

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Section: Discussionmentioning

confidence: 60%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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Validity and Reliability of a New Inertial Device for Monitoring Range of Motion at the Pelvis during Sexual Intercourse

Oliva-Lozano

Martín-Fuentes

Muyor

2020

IJERPH

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“…There were no significant differences between instruments for left ankle measurement (p > 0.05) even though a significant systematic bias (~1.77°) with medium effect The data from the inertial device was compared to a Unilever inclinometer (ISOMED, Inc., Portland, OR, USA). The inclinometer was considered as the reference instrument because it is defined as a valid and reliable instrument for assessing ankle dorsiflexion [14,29,30] and several other joints' range of motion (e.g., hip flexion) [31]. The inclinometer was placed on top of the device following similar previous testing procedures [31] and the start point was set at a 90 degree knee flexion.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, this inertial device has been previously validated for clinical purposes (e.g., hamstring extensibility in the passive straight leg raise test [31]). This study showed similar results in systematic bias (<0.5°), SEM (<0.43°), and an ICC very close to 1 (0.99) [31]. However, there are studies that have specifically • : degrees; mean ± standard deviation; CI: confidence interval; SEM: standard error of the measurement; ICC: intraclass correlation coefficient; CV: coefficient of variation; * p ≤ 0.01; † p ≤ 0.001.…”

Section: Discussionmentioning

confidence: 99%

Validity and Reliability of an Inertial Device for Measuring Dynamic Weight-Bearing Ankle Dorsiflexion

Oliva-Lozano

Martín-Fuentes

Muyor

2020

Sensors

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A decrease in ankle dorsiflexion causes changes in biomechanics, and different instruments have been used for ankle dorsiflexion testing under static conditions. Consequently, the industry of inertial sensors has developed easy-to-use devices, which measure dynamic ankle dorsiflexion and provide additional parameters such as velocity, acceleration, or movement deviation. Therefore, the aims of this study were to analyze the concurrent validity and test-retest reliability of an inertial device for measuring dynamic weight-bearing ankle dorsiflexion. Sixteen participants were tested using an inertial device (WIMU) and a digital inclinometer. Ankle dorsiflexion from left and right ankle repetitions was used for validity analysis, whereas test-retest reliability was analyzed by comparing measurements from the first and second days. The standard error of the measurement (SEM) between the instruments was very low for both ankle measurements (SEM < 0.6°). No significant differences between instruments were found for the left ankle measurement (p > 0.05) even though a significant systematic bias (~1.77°) was found for the right ankle (d = 0.79). R2 was very close to 1 in the left and right ankles (R2 = 0.85–0.89) as well as the intraclass correlation coefficient (ICC > 0.95). Test-retest reliability analysis showed that systematic bias was below 1° for both instruments, even though a systematic bias (~1.50°) with small effect size was found in the right ankle (d = 0.49) with WIMU. The ICC was very close to 1 and the coefficient of variation (CV) was lower than 4% in both instruments. Thus, WIMU is a valid and reliable inertial device for measuring dynamic weight-bearing ankle dorsiflexion.

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Static and dynamic reliability of WIMU PRO™ accelerometers according to anatomical placement

Gómez-Carmona

Bastida-Castillo

García-Rubio

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part P:

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Currently, the use of accelerometry to analyze training and competition is on the increase. Thus, accelerometers must be reliable when calculating different variables from raw data. The purpose of this investigation was to assess the reliability of triaxial accelerometers that contain inertial devices for measuring external loads in sports. Four and eight WIMU PROä inertial devices (RealTrack Systems, Almeria, Spain) were assessed in laboratory and specific sport conditions, respectively. The laboratory test was performed in static (with and without stress) and dynamic (10 and 30 Hz vibrations) conditions. In addition, two tests were performed during continuous and intermittent activity: (1) an incremental progressive running test on the treadmill and (2) 5 min of a Soccer-Specific Aerobic Field Test (SAFT 90), where the devices were placed on ankle, knee, lower back and scapulae. Direct assessment of the accelerometers by calculating a vector magnitude, expressed as total acceleration (AcelT), was used for reliability using bias, 695% limits of agreement and coefficient of variation. A t-test and Pearson's r were performed for test-retest reliability. In the laboratory assessments, an excellent within-and between-device static (with and without stress) and dynamic reliability were found (coefficient of variation = 0.23%-0.78%). A very high reliability was also observed in the incremental treadmill test (coefficient of variation = 2.20%) and SAFT 90 (coefficient of variation = 2.96%) with a nearly perfect correlation between devices (r = 0.99-1.00). Finally, in the between-sessions reliability analysis, excellent results (p = 0.46-0.98; t = 0.01-0.73) and a very strong correlation (r = 0.86-0.96) was found with p values greater than 0.05 indicating no differences between the tests. In conclusion, the accelerometers of the tested device have shown excellent results for within-and betweendevice reliability and in test-retest analysis. Thus, this device can calculate all variables that depend on accelerometry measurement such as PlayerLoadä or impacts in different ranges, and in different anatomical locations.

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Validity and Reliability of a New Device (WIMU®) for Measuring Hamstring Muscle Extensibility

Cited by 15 publications

References 38 publications

Validity and Reliability of a New Inertial Device for Monitoring Range of Motion at the Pelvis during Sexual Intercourse

Validity and Reliability of a New Inertial Device for Monitoring Range of Motion at the Pelvis during Sexual Intercourse

Validity and Reliability of an Inertial Device for Measuring Dynamic Weight-Bearing Ankle Dorsiflexion

Static and dynamic reliability of WIMU PRO™ accelerometers according to anatomical placement

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