CClinicalTrials.gg
TerminatedNCT05531136STIFF3Updated Jun 6, 2025

Effect of a Foot Muscle Strengthening Program in Mobile Older Adults Adults

An interventional study of Foot strengthening training in Fall Risk, sponsored by Lydia Willemse. Terminated at 1 site in Netherlands. Open to participants aged 65 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-06-06.

Sponsored by Lydia Willemse · Not applicable, Interventional, and Prevention

Why this study was terminated
Reaching end of funding
Phase
Not applicable
Study type
Interventional
Enrollment
34
Allocation
Randomized
Ages
65 Years and older
Sex
All
01

Study summary

Background of the study:

Falling is highly prevalent among older adults and has serious societal impact. Falls occur mainly during walking as a result of altered gait and/or the inability to maintain balance. The plantar intrinsic foot muscles (PIFM) have a role in these dynamic functions. When these muscles atrophy, as happens with advancing age, strengthening these muscles may be beneficial in order to improve or retain gait performance.

Objective of the study:

To investigate the effect of adding PIFM strengthening exercises to fall prevention programs compared to fall prevention programs alone on maximum gait speed in mobile older adults. The secondary objective is to also investigate the effect on: foot muscles' size, foot function during gait, balance during gait, discomfort during or after the training, self-reported mobility limitations, physical activity level, fall incidents during the intervention, fear of falling, foot plantar pressure during gait, static balance, toe flexor strength, physical functioning, foot morphology, foot posture.

Study design:

An investigator-blinded parallel randomized controlled trial (RCT), with a 12-week PIFM strengthening intervention period and pre- and post-intervention laboratory measurements.

Study population:

Older adults (>65 years) who are free of any known condition or disease that interferes with the execution of the exercise program.

Intervention:

Both the control and the intervention group continue with the regular exercise therapy to prevent falling. On top of this, the intervention group is delivered a 12-weeks exercise program consisting of foot strengthening exercises prescribed for 5 daily sessions a week, of which 1 supervised, 20 minutes per session.

Primary study parameters/outcome of the study:

The post-intervention difference between the intervention and control group in maximum gait speed.

Secondary study parameters/outcome of the study:

The post-intervention difference between the intervention and control group in foot muscles' size, foot function during gait, balance during gait, discomfort during or after the training, self-reported mobility limitations, physical activity level, fall incidents during the intervention, fear of falling, foot plantar pressure during gait, static balance, toe flexor strength, physical functioning, foot morphology, foot posture.

Nature and extent of the burden and risks associated with participation, benefit and group relatedness:

The burden for the participant consists mainly of 1) the time spent and effort put in engaging in the exercise therapy, 2) any discomfort (e.g., fatigue) or pain (e.g., cramp, muscle soreness) during or after the exercises, 3) the time that is spent on the measurement occasions (home visits: 1 x 1 hour (+ 1 x 30 minutes for the intervention group); laboratory: 2 x 3 hours), 4) the necessity of travelling to the motion analysis laboratory, 5) the inconvenience of wearing the activity monitor attached to the skin of the thigh for 7 days, and 6) questionnaires may unintentionally make the subject aware of declined health conditions.

02

Conditions studied

  • Fall Risk

Keywords

  • falling
  • foot exercises
  • older adults
  • mobility
03

In context

Lead sponsor

This is the only study on the registry with Lydia Willemse as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
65 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Inclusion Criteria:

  • be 65 years of age or over;
  • be able to ambulate 10 meter without using a walking aid;
  • engage in a functional exercise program delivered to a group of older adults by an educated or certified physical therapist or trainer (e.g., fall preventive exercise program, senior fit programs);
  • report to have 1) fear of falling OR 2) experienced a fall in the previous 12 months OR 3) difficulties with mobility, gait, or balance;
  • be able to arrange their own transport to the movement analysis laboratory.

Exclusion Criteria::

  • The respondent is a minor or legally incompetent adult;
  • Self-reported presence of any disorder interfering with the execution of the exercises.
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Investigator, Outcomes assessor)
Enrollment
34 participants (actual)

Study arms

  • Experimental
    Foot strengthening training

    12-week foot strengthening training in addition to an already joined functional exercise program. The foot strengthening training is supervised and progressing and consists of isolated and functional exercises. Participants keep a training diary.

    Other: Foot strengthening training

  • No intervention
    Control

    The control group continues the functional exercise program as usual. The subjects in this group are asked to keep a diary in which the subjects weekly report other physical activities, fall incidents and mobility related discomfort. The trainer calls the participants in the control group every week to pay attention to these topics.

Interventions

  • OtherFoot strengthening training

    a 12-weeks exercise program consisting of foot strengthening exercises prescribed for 5 daily sessions a week, of which 1 supervised, 20 minutes per session on top of the regular exercise therapy to prevent falling

06

What researchers measure

Primary outcomes

  1. Maximum gait speed

    The post-intervention difference between the intervention and control group in maximum gait speed.

    Time frame: 12 weeks

Secondary outcomes

  1. Foot muscles' morphology derived from ultrasound imaging

    Time frame: 12 weeks

  2. Lower extremity biomechanics during gait assessed with 3D motion and ground reaction force capturing

    Time frame: 12 weeks

  3. Spatiotemporal gait parameters assessed with 3D motion and ground reaction force capturing

    Time frame: 12 weeks

  4. Balance during gait assessed with 3D motion and ground reaction force capturing

    Time frame: 12 weeks

  5. Self-reported mobility limitations

    Time frame: 12 weeks

  6. Weekly time spent in physical activities

    in bouts of at least 10 minutes duration that is experienced by the participant at least as moderate intense (≥5 on a 10-point scale of how hard one feel he or she is exercising). From this it is deduced whether the participant meets the WHO recommendation on aerobic physical activity for health

    Time frame: 12 weeks

  7. Fall incidents during the intervention

    Time frame: 12 weeks

  8. Fear of falling assessed by the (Falls Efficacy Scale-International) FES-I questionnaire

    Time frame: 12 weeks

  9. Foot plantar pressure during gait assessed by a 2-meter pressure plate

    Time frame: 12 weeks

  10. Static balance assessed by a force plate during single leg stance

    Time frame: 12 weeks

  11. Isometric toe flexor strength assessed by a pressure plate during maximal toe press

    Time frame: 12 weeks

  12. Physical functioning assessed by the Short Physical Performance Battery (SPPB)

    Time frame: 12 weeks

  13. Foot arch characteristics assessed by a 3D foot scanner

    Time frame: 12 weeks

  14. Health related quality of life assessed by SF-36

    Time frame: 12 weeks

07

Study locations

1 site
  • Fontys Hogeschool
    Eindhoven, Netherlands
08

References and documents

Individual participant data

Plan to share: Undecided — Re-use of the data will be on request and on condition that all Principle Investigators agree and provided the requirements of the ethical committee are met

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 6, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05531136
Lead sponsor
Lydia Willemse
Collaborators
Fontys University of Applied Sciences, KU Leuven, Tilburg University
Responsible party
Lydia Willemse (MSc., Fontys University of Applied Sciences) — Sponsor-investigator
First posted
Sep 7, 2022
Start date
Nov 8, 2022
Primary completion
Jul 18, 2024
Completion
Jul 18, 2024
Last update
Jun 6, 2025

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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