Muscle Tightness, Stretch
Conditions
Brief summary
The crossover-effect within resistance- and strength training is more or less confirmed with multiple studies showing similar results. The studies shows an increase in muscle strength within the contralateral extremity being exercised. Regarding muscle length or mobility (flexibility) the crossover-effect have not been studied. For a person to gain an increase in muscle strength mobility training in the form of stretching and flexibility training of our skeletal muscle is a common exercise. However, the evidence are scare and there are only a few studies comparing the effect of prolonged static stretching (\> 90 sec) and dynamic flexibility training as to which of these methods has the best length-enhancing effect over time. The purpose of this study is to compare the crossover-effect of eight weeks of oneleg dynamic flexibility training versus oneleg prolonged static stretching versus a nonstretching controlgroup on mobility in the hamstring muscles in adults with reduced mobility of the hamstring muscle. The aim is also to compare the sustained effect of flexibility training between the two groups, eight weeks after completion of the intervention.
Interventions
OTHERStrecthing
Comparing the crossover-effect of dynamic versus static stretching
Sponsors
Luleå Tekniska Universitet
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Masking description
The outcome assessor are not aware of the participants group allocation at time of measurement of outcome measures
Eligibility
Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
* Passiv straigth leg raise \< 70 degrees * Read and understand swedish
Exclusion criteria
* Injuries within the hamstrings muscle past 3 month * Disabilities within the muscloskeletal system (i.e. lower back, thoracic spine, cervikal spine, hip, knee, ankle, fot) affecting the participants life * Neurological, inflammatoric or heart-diseases * Nociplasic pain disorders * Medication with possibility affecting muscle strength of flexibility * Positive neurodynamic test of the lower extremity
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Passiv straigth leg raising | 5 minutes | Muscle length of the hamstrings muscle will be measured via degress of hip flexion at a passive straigth leg raise of the lower extremity. One leg at a time. |
| Active knee extension | 5 minutes | The person will lay supine with a 90 degress of hip flexion towards a bar against the thigh. Thereafter the person will perform an active knee extensor as far as possible and the degrees of kneeflexion will be measured. |
Countries
Sweden
Outcome results
None listed