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Acute Effects of Inspiratory Muscle Warm-up on Muscular Performance and Pulmonary Function in Natural Bodybuilders

NCT07390149 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 27

Last updated 2026-05-07

No results posted yet for this study

Summary

The present study aims to investigate the acute effects of inspiratory muscle warm-up (IWU) on 1RM performance in professional natural bodybuilders. The hypothesis is that IWU will lead to an increase in the pressure-generating capacity of the inspiratory muscles, thereby resulting in improved 1RM strength performance. The anticipated findings are expected to contribute not only to the enhancement of maximal strength performance but also to the improvement of exercise efficiency through increased respiratory muscle endurance. It is submitted that these outcomes may ultimately provide insights into the long-term sustainability of professional athletes' performance.

Twenty male athletes who had competed in national and international professional natural bodybuilding competitions were recruited for this study. The participants had an average experience in natural bodybuilding of 3.21 years, with a standard deviation of ± 1.44 years, and trained for more than five hours per week. The data collection period commenced in July 2025. The study was designed as a randomized controlled experimental trial. Participants were randomly assigned to two groups by a computerized program at three visits after the trial, based on their first measurement: inspiratory warm-up (IWU) group or control (CON) group.

Conditions

  • Exercise Physiology
  • Sports Performance

Interventions

OTHER

IWU

The IWU group performed both inspiratory muscle warm-up and standard exercise warm-up.

OTHER

Control

The CON group performed only the standard warm-up.

Sponsors & Collaborators

  • Çankırı Karatekin University

    collaborator OTHER

  • Gümüşhane Universıty

    lead OTHER

Principal Investigators

  • Coşkun YILMAZ, associate professor · Gümüşhane Üniversity

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
35 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-01-05
Primary Completion
2025-04-15
Completion
2026-01-05

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07390149 on ClinicalTrials.gov