Acute Effects of Vibration Versus High-Intensity Resistance Conditioning on Neuromuscular Performance

NCT07789470 | Completed

• 1 other identifier: TNKU-2024.315.11.22
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this randomized crossover study was to compare the immediate effects of high-intensity resistance conditioning and whole-body vibration conditioning on lower- and upper-body neuromuscular performance in recreationally resistance-trained young adults. Twenty participants were enrolled, and 19 completed both experimental conditions. After a preliminary assessment and familiarization session, participants completed the resistance-conditioning and vibration-conditioning protocols in a randomized order during two experimental sessions separated by 24 hours. The resistance-conditioning protocol included three squat repetitions at 90% of estimated one-repetition maximum before countermovement jump testing and three bench-press repetitions at 90% of estimated one-repetition maximum before an isometric push-up assessment. The vibration-conditioning protocol included lower- and upper-body vibration exercises performed on a vibration platform before the corresponding performance assessments. Lower-body performance was assessed using countermovement jump height, flight time-to-contraction time ratio, and relative peak power. Upper-body performance was assessed using peak force during an isometric push-up. All performance outcomes were measured using dual force desks.

Conditions

Neuromuscular Performance

Keywords

Whole-Body Vibration; High-Intensity Resistance Conditioning; Post-Activation Performance Enhancement; Countermovement Jump; Isometric Push-Up; Acute Conditioning

Outcome Measures

Primary Outcomes (4)

• Countermovement Jump Height

  Countermovement jump height was measured in centimeters using a dual force-plate system (ForceDecks, VALD Performance). Participants completed at least three valid trials, and the highest valid jump was retained for analysis. Higher values indicate greater jump height.

  At each experimental period: 9 minutes after squat resistance conditioning and 5 minutes after lower-body vibration conditioning

• Countermovement Jump Flight Time-to-Contraction Time Ratio

  The flight time-to-contraction time ratio was obtained from the countermovement jump force-time data using ForceDecks software. Participants completed at least three valid trials, and the value from the highest valid jump was retained for analysis. The ratio is dimensionless.

  At each experimental period: 9 minutes after squat resistance conditioning and 5 minutes after lower-body vibration conditioning

• Countermovement Jump Relative Peak Power

  Relative peak power during the countermovement jump was measured in watts per kilogram using a dual force-plate system and calculated by ForceDecks software. Participants completed at least three valid trials, and the value from the highest valid jump was retained for analysis.

  At each experimental period: 9 minutes after squat resistance conditioning and 5 minutes after lower-body vibration conditioning

• Isometric Push-Up Peak Force

  Peak vertical ground-reaction force during an isometric push-up was measured in newtons using a dual force-plate system (ForceDecks, VALD Performance). Participants completed two to three maximal attempts, and the highest valid force value was retained for analysis.

  At each experimental period: 9 minutes after bench-press resistance conditioning and 9 minutes after upper-body vibration conditioning

Study Arms (2)

Resistance Conditioning Followed by Vibration Conditioning

EXPERIMENTAL

Participants completed the high-intensity resistance-conditioning protocol during Period 1 and the vibration-conditioning protocol during Period 2. The two experimental periods were separated by 24 hours.

Other: High-Intensity Resistance Conditioning; Other: Vibration Conditioning

Vibration Conditioning Followed by Resistance Conditioning

EXPERIMENTAL

Participants completed the vibration-conditioning protocol during Period 1 and the high-intensity resistance-conditioning protocol during Period 2. The two experimental periods were separated by 24 hours.

Other: High-Intensity Resistance Conditioning; Other: Vibration Conditioning

Interventions

High-Intensity Resistance Conditioning OTHER

Participants performed three squat repetitions at 90% of estimated one-repetition maximum. Countermovement jump performance was assessed after 9 minutes of passive recovery. Following the jump assessment and 15 minutes of passive recovery, participants performed three bench-press repetitions at 90% of estimated one-repetition maximum. Isometric push-up performance was assessed 9 minutes after the bench-press conditioning activity.

Resistance Conditioning Followed by Vibration Conditioning; Vibration Conditioning Followed by Resistance Conditioning

Vibration Conditioning OTHER

Participants completed four 30-second lower-body vibration bouts at 28 Hz and 4 mm displacement, with 30 seconds of passive recovery between bouts. Countermovement jump performance was assessed after 5 minutes of recovery. Following the jump assessment and 7 minutes of passive recovery, participants completed two 30-second upper-body vibration bouts using extended- and flexed-elbow push-up positions. Isometric push-up performance was assessed 9 minutes after completion of the upper-body vibration protocol.

Resistance Conditioning Followed by Vibration Conditioning; Vibration Conditioning Followed by Resistance Conditioning

Eligibility Criteria

• Age: 17 Years - 25 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Aged 17 to 25 years
• Enrolled as a student in the Faculty of Sport Sciences at Tekirdag Namik Kemal University
• Recreational participation in resistance training
• Previous sporting experience
• Provision of written informed consent
• For participants younger than 18 years, provision of additional written consent from a parent

You may not qualify if:

• An orthopedic condition that could interfere with the exercise or testing procedures
• A cardiovascular condition that could interfere with the exercise or testing procedures
• A neurological condition that could interfere with the exercise or testing procedures

Sponsors & Collaborators

• Namik Kemal University: lead

Study Sites (1)

Tekirdag Namik Kemal University, Sports Sciences Research and Development Centre, Tekirdag, Suleymanpasa 59030

Tekirdağ, Suleymanpasa, 59030, Turkey (Türkiye)

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Prof. Dr.

Model Details: This study used a randomized, two-treatment, two-period, two-sequence crossover design. Participants were randomized to either a resistance-conditioning followed by vibration-conditioning sequence or a vibration-conditioning followed by resistance-conditioning sequence. Each participant completing the crossover phase received both conditioning protocols. The two experimental periods were separated by 24 hours.

Study Record Dates

• First Submitted: August 23, 2026
• First Posted: August 27, 2026
• Study Start: November 10, 2025
• Primary Completion: November 20, 2025
• Study Completion: November 20, 2025
• Last Updated: August 27, 2026

Record last verified: 2026-08

Data Sharing

• IPD Sharing: Will share
• Time Frame: Beginning 3 months after publication and ending 5 years after publication.
• Access Criteria: Data will be available to qualified researchers who submit a methodologically sound proposal for non-commercial scientific purposes. Requests will be reviewed by the principal investigator and will be subject to institutional and ethical requirements. A data-use agreement may be required.

Locations

TU (1)