The effect of hippotherapy on functional outcomes for children with disabilities: a pilot study.

This small pilot study followed four children with physical disabilities over a year to see whether hippotherapy (therapy using horse movement) helped them reach individualized functional goals. Most children improved on a standardized goal scale, and some gains were statistically significant after six months.

What is hippotherapy and why study it?

• Hippotherapy uses the movement of a horse, guided by trained therapists, to provide rhythmic, multidimensional sensory-motor input that can target balance, postural control, coordination, and functional skills.
• It is commonly incorporated by physical, occupational, or speech-language therapists as part of a broader plan of care, but high-quality evidence in pediatric populations is limited.
• This study asks whether hippotherapy contributes to meaningful, real-life functional improvements for children with physical disabilities, measured by individualized goals.

Study purpose

• To evaluate the effect of hippotherapy on functional outcomes in children with physical disabilities using the Goal Attainment Scale (GAS), an individualized, standardized method of scoring progress toward patient-specific goals.
• To explore the feasibility of using GAS within a single-case experimental framework across varied pediatric diagnoses.

Participants

• Four children aged 5–9 years.
• All had physical impairments and/or documented motor delays; diagnoses were varied (specific diagnoses not detailed in the abstract).

Design and procedures

• Multiple single-case experimental A–B design:
  • A = Baseline phase (no hippotherapy), B = Intervention phase (with hippotherapy).
  • Each child served as their own control, allowing within-child comparison of baseline versus intervention performance.
• Duration and assessment schedule:
  • Data were collected approximately every other week over one year, spanning both baseline and intervention phases.
  • This repeated-measures approach supports visual and statistical analysis of change over time.
• Intervention:
  • Hippotherapy was introduced in the B phase; session frequency/intensity details are not specified in the abstract.
  • Children may have continued other therapies as usual (not specified), which is a common real-world context.

Outcome measure: Goal Attainment Scaling (GAS)

• GAS is an individualized, criterion-referenced method where specific, measurable goals are set for each child.
• Each goal is scored on a 5-point scale (typically from much less than expected to much more than expected outcome).
• Individual goal scores are aggregated and converted to a standardized T-score:
  • T-scores are commonly scaled with a mean of 50 and SD of 10 when goals are set to have “as expected” difficulty.
  • Scores above 50 generally indicate better-than-expected attainment; below 50 indicates less-than-expected progress.

Statistical approach

• Primary analysis:
  • Standardized GAS T-scores were used to judge overall functional improvement for each child across the study period.
• Secondary analysis:
  • A nonparametric binomial test was applied after six months of intervention to test whether observed improvements exceeded what might be expected by chance given baseline variability.
  • The binomial test is suitable for small-sample, single-case data where distributional assumptions are uncertain.

Key results

• Three of the four children showed significant improvement in functional outcomes based on standardized GAS T-scores across the study.
• Two of the four children demonstrated statistically significant improvement on the binomial test after six months of hippotherapy.
• Taken together, results suggest positive functional change for most participants, with some achieving statistically verified gains in the medium term.

How to interpret these findings

• Clinical meaning:
  • Improvements on GAS indicate that children were meeting or exceeding their individualized functional goals—changes that are directly relevant to daily activities and participation.
• Consistency of evidence:
  • Converging evidence from GAS T-scores (year-long trajectory) and the binomial test (six-month snapshot) supports real improvement for at least half of the sample.
• Variability of response:
  • Not all children improved to a statistically significant degree, underscoring heterogeneity in baseline status, goals, responsiveness to hippotherapy, and co-occurring factors.

Strengths of the study

• Individualized, function-focused outcomes:
  • GAS aligns with family and child priorities, capturing meaningful change that standardized motor tests might miss.
• Repeated measurement over a long period:
  • Biweekly data across a year enhance reliability of trend detection and reduce the impact of short-term fluctuations.
• Feasibility demonstration:
  • Shows that GAS can be implemented within single-case designs across varied pediatric diagnoses.

Limitations and threats to validity

• Small sample size:
  • Only four participants limit generalizability and the precision of effect estimates.
• A–B design without withdrawal or randomization:
  • Improvements could be influenced by maturation, concurrent therapies, seasonal effects, or expectation/placebo effects.
• Potential measurement bias:
  • GAS relies on goal setting and scoring by clinicians/families; without blinding, expectancy may inflate scores.
• Incomplete intervention details:
  • Lack of dosing and fidelity data makes replication and dose–response interpretation difficult.
• Statistical constraints:
  • Binomial tests in single-case contexts are conservative and sensitive to how improvement is defined; mixed results at six months temper conclusions.

Clinical implications

• Hippotherapy may help some children with physical disabilities achieve functional goals related to mobility, balance, postural control, or participation.
• Use of GAS can align therapy with family-centered goals and make progress tracking transparent and sensitive to meaningful change.
• Clinicians should set well-defined, measurable GAS goals and monitor progress regularly to adjust interventions responsively.
• Expect heterogeneous responses; consider individual profiles, co-interventions, and feasibility when planning hippotherapy.

Recommendations for future research

• Stronger designs:
  • Randomized or multiple-baseline across participants with staggered intervention starts to better control for maturation and history effects.
• Larger and more diverse samples:
  • To identify moderators of response (age, diagnosis, baseline function, sensory profiles).
• Dose–response and fidelity:
  • Specify session frequency, duration, and standardized intervention elements; assess adherence and therapist training.
• Multimodal outcomes:
  • Combine GAS with standardized motor measures, participation scales, caregiver-reported outcomes, and cost-effectiveness analyses.
• Long-term follow-up:
  • Evaluate maintenance and generalization of gains after discontinuation of hippotherapy.

Bottom line

• In this small, year-long pilot, hippotherapy was associated with meaningful functional gains for most participating children, with some statistically significant improvements evident by six months.
• Findings are promising but preliminary; more rigorous, larger-scale studies are needed to establish efficacy, optimal dosing, and which children are most likely to benefit.