None listed
Conditions
Interventions
In the Dynamic Steadiness Squat Training group, a small wireless accelerometer connected to a tablet will be attached to the lateral surface of the participant'
s thigh. The angular velocity of the thigh will be displayed on the tablet in real time. Participants will perform bodyweight squats while viewing the real-time angular velocity displacement of their
s angular velocity within a specified range. At home, participants will perform the same squat training as smoothly as possible, with an emphasis on minimizing unnecessary fluctuations.
In the Convent
Sponsors
Osaka University of Health and Sport Sciences
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: Participants The study will target community-dwelling older adults (both men and women) who are able to walk independently for at least 10 meters. Control3 This study targets males and females in their 20s and 30s who are not habitually performing strength training.
Exclusion criteria
Exclusion criteria: Participants will be excluded from the study if they meet any of the following conditions: 1. Engaged in resistance training or high-intensity exercise within the past year. 2. Unable to commit to a training schedule of three sessions per week for eight weeks. 3. Diagnosed by a physician with a neurological or cardiovascular disease. 4. Advised by a physician to restrict physical activity for any reason. 5. Deemed by the investigators to be unsuitable for participation in the study. Control3 1. Individuals who have been medically advised to avoid exercise, or who have injuries/disabilities that hinder exercise. 2. Individuals who habitually engage in strength training.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1. Assessment of Force Steadiness During Squatting Force steadiness during squatting will be assessed by measuring thigh angular velocity using an inertial sensor on the thigh. Variability in angular velocity will quantify force steadiness. Lower-limb muscle activity will also be assessed using surface electromyography (EMG). | — |
Secondary
| Measure | Time frame |
|---|---|
| 2. Isometric Knee Extension and Flexion Strength Testing Isometric knee extension and flexion strength will be measured with an isokinetic dynamometer. Muscle activity during testing will also be recorded via surface EMG. 3. Assessment of Lower-Limb Proprioception Knee joint proprioception will be assessed by quantifying the difference between perceived and actual knee joint angles using an isokinetic dynamometer. This will evaluate changes in joint position sense. 4. Chair Rise Test Participants will perform 10 repetitions of a sit-to-stand movement from a chair with a backrest, standing completely and sitting back down. The total time will be measured. 5. Stair Climb Test Participants will ascend and descend a four-step flight of stairs as quickly and safely as possible, without handrails. The time from start to end will be recorded. 6. Single-Leg Stance with Eyes Open Participants will stand barefoot on a force plate with hands on hips. While lifting the non-tested leg approximately 5 cm, the duration of balance maintained on the tested leg will be measured. 7. Timed Up and Go (TUG) Test Participants will sit in a chair with armrests, then stand, walk 3 meters at a comfortable fast pace, turn, return, and sit down. The total time from standing up to re-seating will be recorded. 8. Force Steadiness During Isometric Contraction Force steadiness will be measured during 12-second isometric contractions at 10% and 2.5% of maximal voluntary contraction (MVC). Lower limb muscle activity will also be assessed using surface EMG. 9. Force Steadiness During Concentric and Eccentric Contraction Seated participants will have an inertial sensor on the lower leg to measure angular velocity during knee extension and flexion. Variability in angular velocity will quantify force steadiness. Lower limb muscle activity will also be evaluated using surface EMG. | — |
Countries
Japan
Contacts
Public ContactYohei Shimokochi
Osaka University of Health and Sport Sciences School of Sport Sciences
Outcome results
None listed