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ID
Source
Brief title
Health condition
n.a.
Sponsors and support
Intervention
Outcome measures
Primary outcome
fascicle lengths as determined by B-mode ultrasound
Secondary outcome
Muscle activity as determined by surface electrodes and muscle forces as determined by static inverse dynamics from external force measurements and 3D motion analysis.
Background summary
Objective: The aim of this study is to determine muscle fascicle behavior during three hamstring exercises. These exercises will also be compared on their required hamstring muscle force and muscle activity.
Study design: Cross-sectional study
Study population: Male athletes between 18-30 years old that participate in running-based sports.
Main study parameters/endpoints: 1) Muscle force of the biceps femoris long head, short head, semitendinosus and semimembranosus, 2) surface electromyographic activity of the biceps femoris long head and medial hamstrings, 3) fascicle length changes of the biceps femoris long head.
Study objective
Fascicle length changes will be larger in the Nordic curl and single-leg deadlift compared to the Roman chair
Study design
One time point (cross-sectional study) during which muscle activity is determined by surface electrodes, muscle forces are determined by static optimization and inverse dynamics from external force measurements and 3D motion analysis and fascicle lengths are determined from b-mode ultrasound.
Intervention
n.a.
Inclusion criteria
- Between 18-30 years old
- Participating in a sport that involves a considerable amount of high-speed running (i.e., > ~18 km/h) for at least three times a week. Sports that meet this criterion are football (soccer) rugby, hockey, running (when performing high-intensity interval training for at least three times a week);
- Male
- >1.65 m of height because long individuals are needed for a simultaneous measurement of ultrasound and surface electromyographic activity.
Exclusion criteria
Severe visual or hearing impairment since this makes explanation of the correct exercise technique more difficult;
- History of a previous injury to the leg or back within the previous 24 months;
Design
Recruitment
IPD sharing statement
Plan description
Followed up by the following (possibly more current) registration
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| NTR-new | NL8438 |
| CCMO | NL63290.068.17 |
| OMON | NL-OMON48674 |