Tämä sivu käännettiin automaattisesti, eikä käännösten tarkkuutta voida taata. Katso englanninkielinen versio lähdetekstiä varten.

Anchoring and Postural Stability

torstai 17. syyskuuta 2026 päivittänyt: William J. Hanney, University of Central Florida

Anchoring and Its Effects on Postural Stability

This study will compare standing balance in adults ages 18 to 50 during normal standing, inward anchoring, and outward anchoring. Anchoring involves standing with the feet wider than shoulder width and trying to pull the legs together or push them apart without moving the feet. Participants will complete all three conditions in a randomly assigned order. A researcher will use a handheld force-measuring instrument at six points on the pelvis to measure how much pressure participants can resist before a foot lifts from the floor. Participants will also rate how stable they feel after each anchoring condition. The first 18 participants will repeat assessments to evaluate measurement consistency. Participation is expected to last 60 minutes, or 90 minutes for those completing repeat assessments.

Tutkimuksen yleiskatsaus

Tila

Rekrytointi

Ehdot

Interventio / Hoito

Yksityiskohtainen kuvaus

The study will enroll 72 adults from the University of Central Florida community. Participants will be randomized with equal probability to one of six counterbalanced orders of normal stance, inward anchoring, and outward anchoring. Every participant will complete all three conditions.

Inward anchoring involves attempting to draw the legs toward one another without moving the feet. Outward anchoring involves attempting to press the legs away from one another without moving the feet. Both anchoring conditions use a stance wider than shoulder width. Participants will wear their usual athletic footwear.

The same tester will apply a microFET2 handheld dynamometer at the right and left anterior superior iliac spines, iliac crests, and posterior superior iliac spines. Applied pressure will increase until the sole of the foot closest to the tester leaves the floor, at which point force will be recorded in newtons. Each site will be tested three times in each stance. Rest periods will be one minute between sets within a stance and two minutes between stances. Instructions for the next stance will be given during the final minute of the between-stance rest period.

After each anchoring condition, participants will rate perceived stability. The first 18 participants will complete additional repeat assessments for intrarater reliability analysis. The protocol plans repeated-measures analyses for stance/order comparisons and intraclass correlation coefficients for reliability.

Opintotyyppi

Interventio

Ilmoittautuminen (Arvioitu)

72

Vaihe

  • Ei sovellettavissa

Yhteystiedot ja paikat

Tässä osiossa on tutkimuksen suorittajien yhteystiedot ja tiedot siitä, missä tämä tutkimus suoritetaan.

Opiskeluyhteys

Opiskelupaikat

    • Florida
      • Orlando, Florida, Yhdysvallat, 32816
        • Rekrytointi
        • University of Central Florida Spine and Mobility Lab
        • Ottaa yhteyttä:

Osallistumiskriteerit

Tutkijat etsivät ihmisiä, jotka sopivat tiettyyn kuvaukseen, jota kutsutaan kelpoisuuskriteereiksi. Joitakin esimerkkejä näistä kriteereistä ovat henkilön yleinen terveydentila tai aiemmat hoidot.

Kelpoisuusvaatimukset

Opintokelpoiset iät

18 vuotta - 50 vuotta (Aikuinen)

Hyväksyy terveitä vapaaehtoisia

Joo

Sukupuolet, jotka voivat opiskella

Kaikki

Kuvaus

Inclusion Criteria:

  • Adults aged 18-50 years.
  • Able to provide informed consent and independently read, write, and communicate in English.

Exclusion Criteria:

  • History of neurological or vestibular conditions affecting balance, such as stroke, Parkinson's disease, multiple sclerosis, or vertigo, or uncorrected/inadequately corrected visual deficits affecting postural control.
  • Lower-extremity or spinal injury, orthopedic surgery, or a musculoskeletal condition within the past 6-12 months that may affect balance, force production, or safe participation.
  • Current pain or dysfunction limiting safe standing or weight-bearing tasks.
  • Use of medications that may affect balance, coordination, or muscle performance, such as muscle relaxants, opioids, or sedatives.
  • A cardiovascular or systemic condition that makes participation unsafe, such as uncontrolled hypertension, dizziness, or syncope, or inability to stand independently for the duration of testing.

Opintosuunnitelma

Tässä osiossa on tietoja tutkimussuunnitelmasta, mukaan lukien kuinka tutkimus on suunniteltu ja mitä tutkimuksella mitataan.

Miten tutkimus on suunniteltu?

Suunnittelun yksityiskohdat

  • Ensisijainen käyttötarkoitus: Seulonta
  • Jako: Satunnaistettu
  • Inventiomalli: Crossover-tehtävä
  • Naamiointi: Kaksinkertainen

Aseet ja interventiot

Osallistujaryhmä / Arm
Interventio / Hoito
Kokeellinen: Normal Stance → Inward Anchoring → Outward Anchoring

Participants complete normal stance, then inward anchoring, then outward anchoring. The same force assessments are performed in each condition, with two minutes of rest between conditions.

Participants stand normally while the tester performs the protocol's pelvic force assessments. This condition provides the within-participant comparison for the two anchoring techniques

Participants stand upright with their feet wider than shoulder width and attempt to pull their legs toward each other without moving the feet. They maintain the position during the pelvic force assessments.

Participants stand upright with their feet wider than shoulder width and attempt to push their legs away from each other without moving the feet. They maintain the position during the pelvic force assessments.

Kokeellinen: Normal Stance → Outward Anchoring → Inward Anchoring

Participants complete normal stance, then outward anchoring, then inward anchoring. The same force assessments are performed in each condition, with two minutes of rest between conditions.

Participants stand normally while the tester performs the protocol's pelvic force assessments. This condition provides the within-participant comparison for the two anchoring techniques

Participants stand upright with their feet wider than shoulder width and attempt to pull their legs toward each other without moving the feet. They maintain the position during the pelvic force assessments.

Participants stand upright with their feet wider than shoulder width and attempt to push their legs away from each other without moving the feet. They maintain the position during the pelvic force assessments.

Kokeellinen: Outward Anchoring → Normal Stance → Inward Anchoring

Participants complete outward anchoring, then normal stance, then inward anchoring. The same force assessments are performed in each condition, with two minutes of rest between conditions.

Participants stand normally while the tester performs the protocol's pelvic force assessments. This condition provides the within-participant comparison for the two anchoring techniques

Participants stand upright with their feet wider than shoulder width and attempt to pull their legs toward each other without moving the feet. They maintain the position during the pelvic force assessments.

Participants stand upright with their feet wider than shoulder width and attempt to push their legs away from each other without moving the feet. They maintain the position during the pelvic force assessments.

Kokeellinen: Outward Anchoring → Inward Anchoring → Normal Stance

Participants complete outward anchoring, then inward anchoring, then normal stance. The same force assessments are performed in each condition, with two minutes of rest between conditions.

Participants stand normally while the tester performs the protocol's pelvic force assessments. This condition provides the within-participant comparison for the two anchoring techniques

Participants stand upright with their feet wider than shoulder width and attempt to pull their legs toward each other without moving the feet. They maintain the position during the pelvic force assessments.

Participants stand upright with their feet wider than shoulder width and attempt to push their legs away from each other without moving the feet. They maintain the position during the pelvic force assessments.

Kokeellinen: Inward Anchoring → Normal Stance → Outward Anchoring

Participants complete inward anchoring, then normal stance, then outward anchoring. The same force assessments are performed in each condition, with two minutes of rest between conditions.

Participants stand normally while the tester performs the protocol's pelvic force assessments. This condition provides the within-participant comparison for the two anchoring techniques

Participants stand upright with their feet wider than shoulder width and attempt to pull their legs toward each other without moving the feet. They maintain the position during the pelvic force assessments.

Participants stand upright with their feet wider than shoulder width and attempt to push their legs away from each other without moving the feet. They maintain the position during the pelvic force assessments.

Kokeellinen: Inward Anchoring → Outward Anchoring → Normal Stance

Participants complete inward anchoring, then outward anchoring, then normal stance. The same force assessments are performed in each condition, with two minutes of rest between conditions.

Participants stand normally while the tester performs the protocol's pelvic force assessments. This condition provides the within-participant comparison for the two anchoring techniques

Participants stand upright with their feet wider than shoulder width and attempt to pull their legs toward each other without moving the feet. They maintain the position during the pelvic force assessments.

Participants stand upright with their feet wider than shoulder width and attempt to push their legs away from each other without moving the feet. They maintain the position during the pelvic force assessments.

Mitä tutkimuksessa mitataan?

Ensisijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Mean Break-Point Force at the Right Anterior Superior Iliac Spine
Aikaikkuna: Day 1

A microFET2 handheld dynamometer is applied at the right anterior superior iliac spine during normal stance, inward anchoring, and outward anchoring. Force in newtons is recorded when the sole of the foot closest to the tester leaves the floor. Three readings are collected per stance

Day 1
Mean Break-Point Force at the Left Anterior Superior Iliac Spine
Aikaikkuna: Day 1

A microFET2 handheld dynamometer is applied at the left anterior superior iliac spine during normal stance, inward anchoring, and outward anchoring. Force in newtons is recorded when the sole of the foot closest to the tester leaves the floor. Three readings are collected per stance.

Day 1
Mean Break-Point Force at the Right Iliac Crest
Aikaikkuna: Day 1

A microFET2 handheld dynamometer is applied at the right iliac crest during normal stance, inward anchoring, and outward anchoring. Force in newtons is recorded when the sole of the foot closest to the tester leaves the floor. Three readings are collected per stance

Day 1
Mean Break-Point Force at the Left Iliac Crest
Aikaikkuna: Day 1

A microFET2 handheld dynamometer is applied at the left iliac crest during normal stance, inward anchoring, and outward anchoring. Force in newtons is recorded when the sole of the foot closest to the tester leaves the floor. Three readings are collected per stance.

Day 1
Mean Break-Point Force at the Right Posterior Superior Iliac Spine
Aikaikkuna: Day 1

A microFET2 handheld dynamometer is applied at the right posterior superior iliac spine during normal stance, inward anchoring, and outward anchoring. Force in newtons is recorded when the sole of the foot closest to the tester leaves the floor. Three readings are collected per stance.

Day 1
Mean Break-Point Force at the Left Posterior Superior Iliac Spine
Aikaikkuna: Day 1

A microFET2 handheld dynamometer is applied at the left posterior superior iliac spine during normal stance, inward anchoring, and outward anchoring. Force in newtons is recorded when the sole of the foot closest to the tester leaves the floor. Three readings are collected per stance.

Day 1
Perceived Stability Rating After Inward Anchoring
Aikaikkuna: Day 1

After inward anchoring, participants answer how stable they felt during that stance. Ratings range from 0 (not at all stable) to 10 (completely stable); 5 means neutral, or the same stability as normal standing. Higher scores indicate greater perceived stability.

Day 1
Perceived Stability Rating After Outward Anchoring
Aikaikkuna: Day 1

After outward anchoring, participants answer how stable they felt during that stance. Ratings range from 0 (not at all stable) to 10 (completely stable); 5 means neutral, or the same stability as normal standing. Higher scores indicate greater perceived stability

Day 1

Yhteistyökumppanit ja tutkijat

Täältä löydät tähän tutkimukseen osallistuvat ihmiset ja organisaatiot.

Sponsori

Tutkijat

  • Päätutkija: William J Hanney, PhD, University of Central Florida

Julkaisuja ja hyödyllisiä linkkejä

Tutkimusta koskevien tietojen syöttämisestä vastaava henkilö toimittaa nämä julkaisut vapaaehtoisesti. Nämä voivat koskea mitä tahansa tutkimukseen liittyvää.

Yleiset julkaisut

Opintojen ennätyspäivät

Nämä päivämäärät seuraavat ClinicalTrials.gov-sivustolle lähetettyjen tutkimustietueiden ja yhteenvetojen edistymistä. National Library of Medicine (NLM) tarkistaa tutkimustiedot ja raportoidut tulokset varmistaakseen, että ne täyttävät tietyt laadunvalvontastandardit, ennen kuin ne julkaistaan ​​julkisella verkkosivustolla.

Opi tärkeimmät päivämäärät

Opiskelun aloitus (Todellinen)

Sunnuntai 23. elokuuta 2026

Ensisijainen valmistuminen (Arvioitu)

Torstai 30. syyskuuta 2027

Opintojen valmistuminen (Arvioitu)

Tiistai 2. toukokuuta 2028

Opintoihin ilmoittautumispäivät

Ensimmäinen lähetetty

Keskiviikko 9. syyskuuta 2026

Ensimmäinen toimitettu, joka täytti QC-kriteerit

Torstai 17. syyskuuta 2026

Ensimmäinen Lähetetty (Todellinen)

Torstai 24. syyskuuta 2026

Tutkimustietojen päivitykset

Viimeisin päivitys julkaistu (Todellinen)

Torstai 24. syyskuuta 2026

Viimeisin lähetetty päivitys, joka täytti QC-kriteerit

Torstai 17. syyskuuta 2026

Viimeksi vahvistettu

Tiistai 1. syyskuuta 2026

Lisää tietoa

Tähän tutkimukseen liittyvät termit

Muut tutkimustunnusnumerot

  • 9152

Yksittäisten osallistujien tietojen suunnitelma (IPD)

Aiotko jakaa yksittäisten osallistujien tietoja (IPD)?

EI

Lääke- ja laitetiedot, tutkimusasiakirjat

Tutkii yhdysvaltalaista FDA sääntelemää lääkevalmistetta

Ei

Tutkii yhdysvaltalaista FDA sääntelemää laitetuotetta

Ei

Nämä tiedot haettiin suoraan verkkosivustolta clinicaltrials.gov ilman muutoksia. Jos sinulla on pyyntöjä muuttaa, poistaa tai päivittää tutkimustietojasi, ota yhteyttä register@clinicaltrials.gov. Heti kun muutos on otettu käyttöön osoitteessa clinicaltrials.gov, se päivitetään automaattisesti myös verkkosivustollemme .