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February 6, 2025Open Access

Reactive balance training improves step reactions with no difference between fixed, low-to-high, and variable intensities.

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Why the study?

The relative contributions of perturbation intensity and predictability to the generalizability of reactive balance training remain unclear.

Does the intensity schedule of reactive balance training affect improvements in balance recovery in healthy young adults?

Population

36 healthy young adults (20-35 years)

Comparison

Fixed high intensity vs low-to-high intensity vs variable intensity RBT schedules

Design

Randomized study

Key result

Reactive balance training improved step reactions to untrained perturbations across all participants (p<0.0001), but these improvements did not differ significantly between fixed high, low-to-high, and variable intensity training schedules.

Authors

AMAvril MansfieldCMChristopher McCrum

Discussion

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Member takes

Overview

No intensity schedule superior for untrained perturbations in young adults; leaves open optimal RBT dosing for clinical fall prevention.

Study Design

Type

RCT (n=36)

Blinding

Open-label

Randomization

Randomly allocated using sealed envelopes

Multicenter

No

Structured PICO

Does the intensity schedule of reactive balance training affect improvements in balance recovery in healthy young adults?

P
Population
36 healthy young adults aged 20-35 years underwent a single session of reactive balance training to assess the impact of different perturbation intensity schedules on balance recovery.
I
Intervention
Reactive balance training (RBT) on a motion platform delivering perturbations in varying directions across five trial blocks, using one of three intensity schedules (fixed high intensity, low-to-high intensity, or variable intensity)
C
Comparator
Comparison between the three RBT intensity schedules (fixed high intensity, low-to-high intensity, and variable intensity)
O
Outcome
Balance reactions (number of recovery steps) pre- and post-training following untrained perturbationssurrogate

Main Result

p-value: p=0.29

Improvements in step reactions to untrained perturbations did not differ between training groups, highlighting the importance of multi-directional variability over specific intensity schedules.

Limitations

  • Training perturbations were not completely unpredictable as participants were notified before each trial started.
  • The study assessed young, healthy adults, making the results not directly applicable to older adults or those with balance impairments.

Cite This Study

Mansfield et al. (2025) conducted an RCT in Healthy young adults (n=36). Reactive balance training intensity schedules (fixed high, low-to-high, variable) vs. Between-group comparison of the three schedules was evaluated on Number of recovery steps and proportion of multi-step reactions following a perturbation in an untrained direction (p=0.29). Reactive balance training improved step reactions to untrained perturbations across all participants (p<0.0001), but these improvements did not differ significantly between fixed high, low-to-high, and variable intensity training schedules.

synapsesocial.com/papers/6aa8f53ff1edd38da570f30fhttps://doi.org/10.1101/2025.02.05.636697
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