young healthy adults
Conditions
Interventions
Maximal load group: One-leg standing posture, weight-bearing, one-leg standing posture with the front of the foot on a 5-cm platform and the upper limb resting on a wall or other support to maintain b
Sponsors
International University of Health and Welfare
Eligibility
Sex/Gender
Male
Inclusion criteria
Inclusion criteria: Young healthy adult males between the ages of 18 and 30 at the time of consent, who are able to obtain written consent from the individual to participate in the research of their own free will.
Exclusion criteria
Exclusion criteria: Exclude those who routinely perform resistance training, those with ankle joint movement disorders, and those with cardiovascular disease, including venous disease.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| LgEF (lower leg ejection fraction) Measure using an air plethysmograph (APG-1000). At first, the subject's leg is elevated about 45 to empty venous blood in the lower leg. Then, the subject is placed in a standing position, and venous capacity is measured by arterial inflow and venous regurgitation at rest, and the venous filling index is calculated. Next, LgEF is evaluated by performing a single toe-up exercise and measuring ejection fraction. The evaluation periods will be pre-intervention, mid-intervention (week 4), and 8 weeks post-intervention. | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Ankle joint plantar flexion maximum torque Ankle plantar flexion muscle force (Nm) and ankle plantar flexion muscle force/body weight ratio (%) by isometric contraction of the triceps femoris muscle are measured using a multi-purpose muscle function evaluation exercise device (BIODEX System 4). 2. Lower limb skeletal muscle mass Measurements will be taken using a high-precision body component analyzer (Inbody). Subjects will be barefoot and will assume a static standing position on the device for about 1 minute. The bioelectrical impedance method measures the skeletal muscle mass of the left and right limbs and trunk, and the lower limb muscle mass is employed in the measurement. 3. Lower leg circumference The Calf Ankle Index, which is considered to be an indicator of general condition and is not influenced by individual differences, is measured. 4. Lower leg capacity Lower leg volume is measured using the water displacement method, one of the quantitative assessments of volumetric measurements. The subject immerses the lower leg in a tank full of water. The volume of the overflowing water is used to measure the leg volume. All secondary outcomes will be assessed at the same time as the primary outcome. | — |
Countries
Japan
Contacts
Public ContactShinta Takeuchi
International University of Health and Welfare School of Health Sciences at Narita, Department of Physical Therapy
Outcome results
None listed