Fatigue
Conditions
Brief summary
The purpose of this study is to identify an exercise-induced fatigue protocol to mimic central and peripheral acute fatigue effects associated with participation in vigorous dynamic sports activities and to understand the expected central (cardiovascular) and peripheral (muscular) impact of this protocol.
Detailed description
Fatigue-related parameters (BORG, heart rate, blood lactate level, concentric/eccentric force of the quadriceps muscle) will be measured before and after different short-term high-intensity, intermittent exercise protocols.
Interventions
OTHERFatigue protocol
During the fatigue protocol, participants will sprint forward 5 m, cut at a 90° angle, sprint forward another 5 m, and backpedal 5 m. This activity will be repeated 4 times before participants will complete a series of hurdle activities. First, they will perform 2-legged jumps over 5 hurdles that are 30 cm high, turn, and repeat the jumps. Second, they will perform side-stepping exercises over the 5 hurdles. Third, they will complete four 5-m lateral shuffles.
Sponsors
University Ghent
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
SCREENING
Masking
DOUBLE (Subject, Outcomes Assessor)
Intervention model description
Each participant will randomly be assigned to two different fatigue protocols, on separate days. The first protocol is a high-intensity, intermittent exercise protocol and will be performed until complete exhaustion. The second protocol is a time-based variant of the previous protocol and will be performed during 5 minutes.
Eligibility
Sex/Gender
MALE
Age
18 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
* Men * ≥ 18 years * Volley- and basketball, non-elite * ≥ 3 times per week sports participation * No acute or overuse low back/lower extremity injuries in the past 6 months
Exclusion criteria
* Women * \<18 years * \>45 years * other sports than volley- and basketball * elite players * \<3 times per week sports participation * acute or overuse low back/lower extremity injuries in the past 6 months
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Heart rate | This parameters will be continuously monitored 10 minutes before the start of the fatigue protocol until 30 minutes after completion of the protocol | Heart rate, expressed in beats per minute |
| Isokinetic dynamometry | This parameter will be monitored 10 minutes before the start of the fatigue protocol | Isokinetic dynamometry of the quadriceps muscle |
| Blood lactate level | This parameters will be monitored 10 minutes before the start of the fatigue protocol | Blood lactate level, expressed in millimol per liter |
| BORG | This parameters will be continuously monitored 10 minutes before the start of the fatigue protocol until 30 minutes after completion of the protocol | BORG-score, indicating the rate of perceived exertion for legs and breathlessness |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Circuit time | Time will be recorded immediately after completion of the fatigue protocol | Time to perform the fatigue protocol |
Countries
Belgium
Outcome results
None listed