NCT06410846

Brief Summary

Functional training focusing on dynamic, multiplanar eccentric loading of the neck's complex musculature may provide a unique training effect that may protect against neck injuries and mTBI. The purpose of this study is to test the efficacy and adherence of a 12-week TopSpin360 training regimen on important physiologic and performance outcome measures between an intervention group and a control group. The specific aims are 1) to compare differences in four physiologic neck measures and two TopSpin360 performance measures by group and gender, and 2) to evaluate program adherence.

Trial Health

55
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
60

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Mar 2024

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

March 5, 2024

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

April 15, 2024

Completed
28 days until next milestone

First Posted

Study publicly available on registry

May 13, 2024

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 23, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 23, 2026

Completed
Last Updated

March 5, 2026

Status Verified

March 1, 2026

Enrollment Period

2 years

First QC Date

April 15, 2024

Last Update Submit

March 2, 2026

Conditions

Outcome Measures

Primary Outcomes (5)

  • Change in neck circumference measurement over time

    Describe change in neck measurement (inches) between intervention and control groups and gender. Examiner will use Gulick tape measure at the midcervical spine level at mid-point between the suboccipital junction and the C7 spinous process.

    Day 1 and post 12 week exercise follow up visit day

  • Change in cervical spine range of motion (ROM) measurements over time

    ROM will be measured using smartphone inclinometer and compass measurements of cervical uniplanar (FL/EXT) and multiplanar (rotation) motion .These measurements have been found to be both reliable and 51 valid by Guidetti et.al. (2017) who demonstrated ICC \> .99 with minimally detectable change (MDC) of 4-8 degrees and percentage errors between 1-3%.The 52 overcomes the limitation of protractor measurement as a source of error in cervical spine measures as there is no reference to vertical or horizontal, relying on the visual perceptual skills of the examiner and a lack of a standard position.

    Day 1 and post 12 week exercise follow up visit day

  • Change in Maximum Voluntary Isometric Contraction Testing (MVIC) over time

    The hand-held strain gage dynamometer (Lafayette Instruments HHD) will be conducted by the examiner and record the average of 3 trials most representative of best effort. HHD has demonstrated ICCs of .95 between HHD and the gold standard of MVIC measurement using a Cybex isokinetic device in stroke patients and that the make test demonstrated break force ICCs of .981.53 Isokinetic devices (Kin Com and Cybex) and the strain-gage HHD demonstrate a high test-retest reliability (ICC = 0.998) against a known load. MVIC 54 testing using a HHD requires that the examiner elicit the subject's maximum force against the dynamometer and examiner who holds the dynamometer steady. The Lafayette handheld dynamometer utilizes a microprocessor control unit that measures peak force, time to reach peak force, and total test time with an audible tone to indicate the end of preset time. The unit also provides a built-in calibration routine with an internal accuracy of + 1%.

    Day 1 and post 12 week exercise follow up visit day

  • Change in speed for Peak Revolutions per minute (RPM) over time (TopSpin group only)

    An Inflatable pressure biofeedback device is used for the Craniocervical flexion test (CCFT). The CCFT of the deep cervical spine flexors (longus capitus and colli) assesses the activation and isometric endurance of the deep cervical flexors as well as their interaction with the superficial flexors (sternocleidomastoid and anterior scalenes) during five progressive stages of craniocervical flexion, demonstrated 56-58 SCM and AS muscle fatigue during sustained cervical flexion contractions at 25 and 50% of maximum voluntary isometric contraction. Testing will be conducted according to Jull et. al.'s (2008) progressive protocol using a pressure biofeedback device (Figure 5). The CCFT has demonstrated nearly perfect intra-rater (ICC =.98; CI = .99) and inter-rater reliability (ICC = .91). Changes in speed over exercise program will be described.

    Day 1 and post 12 week exercise follow up visit day

  • Change in speed for completion of 60 revolutions over time (TopSpin group only)

    Measure and describe completion of a total of 60 revolutions (30 clockwise and 30 counterclockwise) as quickly as possible. During the test, when the participant completes the first 30 revolutions, they will stop the lever arm in front of their face and then perform the remaining 30 revolutions counterclockwise. The total time is recorded in seconds and is downloaded from the TopSpin app.

    Day 1 and post 12 week exercise follow up visit day

Study Arms (2)

TopSpin device

EXPERIMENTAL

TopSpin360 device/neck strengthening exercises.

Device: TopSpin360

Control group

ACTIVE COMPARATOR

Neck Strengthening exercises.

Other: Neck Strengthening Exercise Plan

Interventions

Neck strength and conditioning device used during neck strengthening program.

TopSpin device

Physical therapist designed neck strengthening program.

Control group

Eligibility Criteria

Age18 Years - 35 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Healthy active-duty service members of any military rank assigned to LRMC
  • years old
  • assigned to Landstuhl Regional Medical Center
  • own a personal cellphone to download the TopSpin360 App (intervention group)
  • able to attend the two times per week training
  • have sufficient time on station to complete entire study including post-study measures.

You may not qualify if:

  • any medical profile that prevents full participation in the ACFT
  • any chronic inner ear abnormalities (e.g., Meniere's disease or benign positional vertigo)
  • history of invasive neck procedures (cortisone injections or neck surgery)
  • any known cervical spine disorders (e.g., degenerative changes of the cervical spine) or gross cervical spine abnormalities when examined by the staff physical therapist
  • non-US military personnel, i.e., German or Netherlands military personnel etc.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Landstuhl Regional Medical Center

Landstuhl, Rhineland-Palatinate, 66849, Germany

Location

Study Officials

  • William Brown, PhD

    Martin Army Community Hospital

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
FED
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 15, 2024

First Posted

May 13, 2024

Study Start

March 5, 2024

Primary Completion

February 23, 2026

Study Completion

February 23, 2026

Last Updated

March 5, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will not share

Locations