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Clinical Journal of Sport Medicine:
doi: 10.1097/JSM.0b013e3181c96722
Original Research

Comparison of Active Stretching Technique and Static Stretching Technique on Hamstring Flexibility

Meroni, Roberto PT*; Cerri, Cesare Giuseppe MD, PhD*; Lanzarini, Carlo PT‡ ; Barindelli, Guido PT; Morte, Giancesare Della PT; Gessaga, Viviana PT† ; Cesana, Gian Carlo MD, MSc†; De Vito, Giovanni MD, MSc†

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Objectives: To compare a passive and an active stretching technique to determine which one would produce and maintain the greatest gain in hamstring flexibility. To determine whether a passive or an active stretching technique results in a greater increase in hamstring flexibility and to compare whether the gains are maintained.

Design: Randomized controlled trial.

Setting: Institutional.

Participants: Sixty-five volunteer healthy subjects completed the enrollment questionnaire, 33 completed the required 75% of the treatment after 6 weeks, and 22 were assessed 4 weeks after the training interruption.

Intervention: A 6-week stretching program with subjects divided into 2 groups with group 1 performing active stretching exercises and group 2 performing passive stretching exercises.

Main Outcome Measures: Range of motion (ROM) was measured after 3 and 6 weeks of training and again 4 weeks after the cessation of training and compared with the initial measurement.

Results: After 3 weeks of training, the mean gain in group 1 (active stretching) on performing the active knee extension range of motion (AKER) test was 5.7°, whereas the mean gain in group 2 (passive stretching) was 3° (P = .015). After 6 weeks of training, the mean gain in group 1 was 8.7°, whereas the mean gain in group 2 was 5.3° (P = .006). Twenty-two subjects were reassessed 4 weeks after the cessation of the training with the maintained gain of ROM in group 1 being 6.3°, whereas the maintained gain in group 2 was 0.1° (P = .003).

Conclusions: Active stretching produced the greater gain in the AKER test, and the gain was almost completely maintained 4 weeks after the end of the training, which was not seen with the passive stretching group. Active stretching was more time efficient compared with the static stretching and needed a lower compliance to produce effects on flexibility.

© 2010 Lippincott Williams & Wilkins, Inc.

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