Interference of Endurance Training on Strength Development and Neuromuscular Adaptations

NCT ID: NCT06378762

Last Updated: 2024-12-03

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 30 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-04-01
• Study Completion Date: 2025-07-30

Brief Summary

This study aims to find out if performing combined strength and endurance exercise in the same program (called concurrent training-CT) leads to similar long-term improvements in neuromuscular function as doing each type of exercise separately. The main questions it seeks to answer are:

Does performing CT result in similar improvements in strength and power as doing just strength training? Does performing CT result in similar improvements in cardiorespiratory fitness as doing just endurance training? Are neuromuscular adaptations similar between CT and just strength training? Researchers will compare the results between three groups: the CT group, the endurance training group (E), and the strength training group (S) to answer these questions.

Detailed Description

This study looks at how different types of exercise affect neuromuscular and cardiorespiratory improvements over time. It aims to see how combining strength and endurance training (concurrent training - CT) affects neuromuscular and cardiorespiratory adaptations compared to doing just strength or endurance training. Participants who regularly do both types of exercise will be split into three groups: Concurrent training (CT), endurance training (E), or strength training (S) and will be involved in 11 weeks of supervised training, three days a week:

Endurance training involves 30 minutes of continuous running, three days a week, at an intensity corresponding to the heavy domain (between the first and second ventilatory threshold) Strength training includes weightlifting three days a week, focusing on building both strength and power.

Concurrent training incorporates both strength and endurance exercises in the same session, three days a week, with strength training being executed prior to endurance training.

Researchers will collect data at three time-points during the 11 weeks: before starting the program (Baseline), at the end of week 5 (Week 5), and at the end of the program (Week 11). Measurements include lower-body strength and power, aerobic capacity, nerve evoked responses, and muscle structure if the quadriceps femoris.

Researchers will then compare the CT, E, and S groups at each measurement point to see which type of training elicited the best adaptations for the different neuromuscular and cardiorespiratory outcomes.

Conditions

Exercise

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: OTHER
• Blinding Strategy: NONE

Study Groups

Endurance

Group Type: EXPERIMENTAL

Endurance Exercise

Intervention Type: BEHAVIORAL

30 minutes of running at an intensity corresponding to the heavy-domain (between the first and second ventilatory thresholds)

Strength

Group Type: EXPERIMENTAL

Strength Exercise

Intervention Type: BEHAVIORAL

Combination of strength and power exercises Weeks 1-5 focus on building maximal strength Weeks 6-11 focus on maintaining maximal strength and improve muscle power

Concurrent

Group Type: EXPERIMENTAL

Concurrent Exercise

Intervention Type: BEHAVIORAL

Combining both strength and endurance training programs, with strength preceding endurance, incorporating a 20-min rest period between each modality

Interventions

Endurance Exercise

30 minutes of running at an intensity corresponding to the heavy-domain (between the first and second ventilatory thresholds)

Intervention Type: BEHAVIORAL

Strength Exercise

Combination of strength and power exercises Weeks 1-5 focus on building maximal strength Weeks 6-11 focus on maintaining maximal strength and improve muscle power

Intervention Type: BEHAVIORAL

Concurrent Exercise

Combining both strength and endurance training programs, with strength preceding endurance, incorporating a 20-min rest period between each modality

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Active training status (strength and endurance (running) exercise at least 2 times per week over the last three months prior to inclusion in the study)

Exclusion Criteria

• Active smoking status
• Orthopedic injuries
• On medication
• Known cardiovascular or respiratory disease

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Fundação para a Ciência e a Tecnologia

OTHER

Sponsor Role: collaborator

University of Lisbon

OTHER

Sponsor Role: lead

Responsible Party

Miguel Gomes

Invited Assistant Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Faculdade de Motricidade Humana - Universidade de Lisboa

Lisbon, Cruz Quebrada - Dafundo, Portugal

Countries

Portugal

Other Identifiers

6/2021

Identifier Type: -

Identifier Source: org_study_id