Effects of Stretch-shortening Cycle Exercises Postural Control in Down Syndrome

Distinct Effects of Trampoline-based Stretch-shortening Cycle Exercises on Muscle Strength and Postural Control in Children With Down Syndrome: A Randomized Controlled Study

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04966403

Enrollment

Registered

2021-07-19

Start date

2018-12-01

Completion date

2020-06-05

Last updated

2021-09-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Down Syndrome

Brief summary

To investigate the effect of a 3-month, trampoline-based stretch-shortening cycle (SSC) exercises on muscle strength and postural control in children with Down syndrome.

Detailed description

a variety of physical therapy techniques are being used to improve lower limb muscle strength and postural control in children with Down syndrome including, but not limited to, progressive resistance training, hippotherapy, aquatic therapy, and isokinetic strength training. Stretch-shortening (SSC) exercises-also referred to as plyometric exercises, is a traditional form of resistance training that involves three-phase muscle contraction during dynamic movements (like jumping and hopping), where the muscle moves rapidly through the eccentric, isometric, and concentric phases.

Interventions

OTHERStandard physical therapy

building strength, enhancing developmental skills, boosting balance, coordination, and postural control

OTHERtrampoline-based stretch-shortening cycle exercises

muscle strength

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

7 Years to 9 Years

Healthy volunteers

Inclusion criteria

* age between 7 and 9 years. * able to follow one step motor commands. * independent ambulators. * not suffering from atlantoaxial joint instability as reported from their medical files.

Exclusion criteria

* Children with un-corrected cardiac anomalies. * Children with un-corrected vision or hearing loss. * Children with un-corrected pulmonary disorders. * Children with un-corrected neurological signs as epilepsy. * Children who had a history of musculoskeletal surgery in the lower extremities through the past year.

Design outcomes

Primary

Measure	Time frame	Description
Grade of Muscle strength by hand-held dynamometer	at baseline	A calibrated hand-held dynamometer (Micro FET2, Hoggan Health Technologies Inc., UT, USA) was used

Secondary

Measure	Time frame	Description
Postural control index by Balance Biodex System	at baseline	Postural stability indices were assessed through the Balance Biodex System (Biodex Medical Systems, Shirley, NY),

Countries

Saudi Arabia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026