An interventional study of Whole-body vibration and Jumping in Healthy, sponsored by Eser Kalaoglu. Completed at 1 site in Turkey. Open to participants aged 20 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-04-16.
Sponsored by Eser Kalaoglu · Not applicable, Interventional, and Basic science
Load-bearing exercises are well-established as beneficial for bone health. Their role in promoting healthy bone development and managing osteoporosis is widely recognized. However, the neural mechanisms underlying the positive biomechanical effects of jumping-based load-bearing exercises, such as running, volleyball, basketball, tennis, and skipping rope, remain unclear. The aim of this study is to investigate whether jumping-based load-bearing exercises activate bone myoregulation reflex activity.
Background and Objectives: Wolff was the first to propose that the microarchitectural structure and mechanical resistance of bone are remodeled in response to mechanical loads it experiences. Frost further expanded on this concept with the mechanostat theory, suggesting that bone formation and resorption remain in balance during routine daily activities. Decreased activity leads to increased bone resorption, while increased activity stimulates bone formation. Consequently, the microarchitectural structure and strength of bone weaken or strengthen accordingly. Recently, the bone reflex has been defined, suggesting that the central nervous system controls the local regulatory mechanisms described by Wolff and Frost. The bone reflex describes how osteocytes are stimulated by mechanical loading, leading to the neural regulation of bone formation and resorption according to mechanical needs (bone osteoregulation reflex). Additionally, it describes a mechanism by which the nervous system reflexively regulates the activity of surrounding muscles to optimally position the bone to resist applied mechanical load (bone myoregulation reflex).
Load-bearing exercises are well-established as beneficial for bone health, with their role in promoting healthy bone development and managing osteoporosis being widely recognized. However, the neural mechanisms underlying the positive biomechanical effects of jumping-based load-bearing exercises, such as running, volleyball, basketball, tennis, and rope skipping, remain unclear. The aim of this study is to investigate whether jumping-based load-bearing exercises activate bone myoregulation reflex activity.
Methods: The study will be conducted with a total of 40 healthy volunteers aged 20-50, comprising both women and men. Participants will be recruited from individuals who either regularly engage in jumping-based sports activities (e.g., volleyball, marathon running, and tennis) or those who perform typical daily living activities without regular sports engagement. Participants will be divided into two groups based on their activity levels: Group 1 (Normally Active Individuals) and Group 2 (Athletic Individuals).
Procedures:
Bone myoregulation reflex activity of the soleus and tibialis anterior muscles will be assessed in both groups during whole-body vibration and jumping using surface electromyography.
This is the only study on the registry with Eser Kalaoglu as lead sponsor.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Individuals with Normal Daily Activities
Other: Whole-body vibration and Jumping
Participants who regularly engage in sports activities such as marathon running, basketball, or volleyball
Other: Whole-body vibration and Jumping
The subjects were first asked to jump in place 20 times, as if they were jumping rope. Then, whole-body vibration was applied. While the participants stood upright on the whole-body vibration device, low-amplitude (1.2 mm) vibrations were applied at eight different frequencies (25, 27, 29, 31, 33, 35, 37, 39 Hz), each lasting for 10 seconds, with a 5-second rest period in between.
Also known as: Loading exercise
Bone myoregulation reflex latency
The measurement will be taken as the time difference between the moment of mechanical stimulation and the onset of the reflex response in the EMG. The unit of measurement for latency is milliseconds.
Time frame: Through study completion, an average of 8 weeks
Bereitschafts (Readiness) Potential
It refers to the myoelectric activity in the tibialis anterior and soleus muscles just before jumping. The onset time of this myoelectric activity will be evaluated in milliseconds, and the amplitude of this activity will be measured in millivolts.
Time frame: Through study completion, an average of 8 weeks
Plan to share: No
This study is completed, as verified in Nov 2024. You cannot join it, but the record below documents what was studied.
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