Award Date


Degree Type


Degree Name

Doctor of Physical Therapy (DPT)


Physical Therapy

Number of Pages



Purpose. The purpose of this study was to determine the stretching duration (15, 30, 60 seconds) with or without a dynamic warm-up that resulted in the longest lasting acute effects in hamstring flexibility.

Subjects. Forty subjects (17 male, 23 female) (age: 20-35 years) were selected to participate in this study using a sample of convenience from university graduate students.

Methods. This study contained 7 treatment conditions in which each subject completed in random order. Three groups consisted of a 5-minute treadmill warm-up at a self-selected velocity (SSV) followed by one of three stretching durations (15, 30, or 60 sec). Three other groups consisted of only one of the three stretching conditions without the treadmill warm-up. The final group consisted of only walking for 5 min on the treadmill at SSV without receiving a static stretch. A baseline passive knee extension range of motion (ROM) was taken in supine followed by the stretching/treadmill intervention. Subsequent knee ROM measurements were taken each minute until knee ROM returned to baseline.

Results. The presence of treadmill warm-up resulted in significantly greater duration of increased hamstring ROM (p≤0.0005). Within the four treadmill conditions, there was no significant difference in duration of increased hamstring ROM. There was no observed statistically significant difference among the three static stretch groups with no treadmill warm-up as well.

Conclusion. The results suggest that a dynamic warm-up with or without a static stretch led to the longest duration of acute increase in hamstring ROM.


Exercise; Hamstring muscle; Sports physical therapy; Stretching exercises


Kinesiotherapy | Physical Therapy | Physiotherapy | Sports Sciences

File Format


File Size

560 Kb

Degree Grantor

University of Nevada, Las Vegas




Incomplete paper data


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