Endurance Exercise: 30 minutes of running at an intensity corresponding to the heavy-domain (between the first and second ventilatory thresholds)
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
Concurrent Exercise: Combining both strength and endurance training programs, with strength preceding endurance, incorporating a 20-min rest period between each modality
Study 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.
Eligibility
Sex
MALE
Min age
18 Years
Max age
30 Years
Healthy volunteers
Accepted
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
Primary outcome measure(s)
Maximal Isometric Strength — Baseline, Week 5, Week 11 Maximal voluntary isometric strength of the plantarflexors and leg press exercise in Newtons
Maximal Dynamic Strength — Baseline, Week 5, Week 11 Maximal dynamic strength on the back squat exercise in kilograms lifted
Surface EMG — Baseline, Week 5, Week 11 Using surface electromyography (EMG), the muscle activation of the plantarflexors muscles will me assessed, as well as the quadriceps femoris during the leg press and back squat exercise
H-reflex excitability — Baseline, Week 5, Week 11 Using percutaneous electrostimulation of the tibial nerve, spinal reflex excitability will be explored by assessing H-reflex evoked responses
V-wave — Baseline, Week 5, Week 11 Using percutaneous electrostimulation of the tibial nerve, neural drive to the active muscle will be assessed by measuring V-wave amplitudes
Lower Body Muscle Power — Baseline, Week 5, Week 11 Lower body muscle power in watts will be assessed during countermovement jumps
Muscle fascicle length — Baseline, Week 5, Week 11 Fascicle length of the vastus lateralis muscles in centimeters
Muscle fascicle pennation angle — Baseline, Week 5, Week 11 Pennation angle of the vastus laterais fascicles, in degrees
Muscle thickenss — Baseline, Week 5, Week 11 Muscle thickenss of the vastus lateralis, in centimeters
Trial sites (1)
Facility
City
Region
Status
Faculdade de Motricidade Humana - Universidade de Lisboa
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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