How 12 Weeks of Balance-Based Resistance Training Affects Muscle and Balance in Older Adults

Effect of 12-Week Unstable Surfaces Resistance Training on Muscle Stiffness, Muscle Co-Activation, and Balance in Older Individuals - Effect of 12-Week Unstable Surfaces Resistance Training on Muscle Stiffness, Muscle Co-Activation, and Balance in Older Individuals (URT-Balance)

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000060187

Enrollment

Registered

2025-12-23

Start date

2024-06-01

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Age-related balance impairment and muscle dysfunction in older adults

Interventions

Unstable Resistance Training (URT): Participants performed lower-limb instability resistance training for 12 weeks (3 sessions per week). Each session included warm-up, main training, and cool-down. T

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Aged between 65 and 75 years. Able to walk independently on level ground and up/down stairs with normal joint function (flexion and extension). No history of hip, knee, or ankle pain, surgery, or trauma in the last six months. Willing to voluntarily participate and sign the informed consent form.

Exclusion criteria

Exclusion criteria: Presence of any severe neuromusculoskeletal injuries or diseases. Diagnosed with serious cardiovascular, cerebrovascular diseases, or mental disorders. Inability to perform or cooperate with the required physical tasks. Known allergy to surface electrodes. Any other severe medical conditions or reasons that may prevent completion of the study.

Design outcomes

Primary

Measure	Time frame
1. Change in static balance assessed by Balance Error Scoring System (BESS) at baseline and after 12 weeks. 2. Change in dynamic balance assessed by Y-Balance Test (YBT) at baseline and after 12 weeks.	—

Secondary

Measure	Time frame
1. Change in muscle stiffness (quadriceps and hamstrings), measured by shear wave elastography (SWE) at baseline and after 12 weeks. 2. Change in knee pain intensity, measured using Visual Analogue Scale (VAS) at baseline and after 12 weeks. 3.Change in lower-limb muscle co-activation during squat movements (squat-down, stand-up, and transition phases), measured by surface EMG at baseline and after 12 weeks of intervention.	—

Measure

Time frame

1. Change in muscle stiffness (quadriceps and hamstrings), measured by shear wave elastography (SWE) at baseline and after 12 weeks. 2. Change in knee pain intensity, measured using Visual Analogue Scale (VAS) at baseline and after 12 weeks. 3.Change in lower-limb muscle co-activation during squat movements (squat-down, stand-up, and transition phases), measured by surface EMG at baseline and after 12 weeks of intervention.

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Countries

Asia(except Japan)

Contacts

Public ContactPing Liu

Universiti Malaya Faculty of Sports and Exercise Science

liu2578794@gmail.com+8613639443653

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026