The Effect of Different Verbal Instruction Phrases on Landing Mechanics during a Drop Landing among Female College Students

Sim, Xin Ern (2020) The Effect of Different Verbal Instruction Phrases on Landing Mechanics during a Drop Landing among Female College Students. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

The purpose of this study was to investigate effect of different verbal instructions phrases on landing mechanics during a drop landing among female college students. A total of 21 recreational lifestyle female college students were recruited (age: 20.04 ± 0.99 years old; weight: 55.65 ± 6.08 kg; height: 162.03 ± 5.69 cm; LESS score: 6.33 ± 1.08) in this study. Subject were required to randomized across three different verbal instruction conditions soft landing (SL), flex more (FM), small landing sound (SLS) by using fishbowls method. Trials for each conditions had 1 week of washout period between each conditions. Subjects did not know the next instruction phrase until the time they perform. The simple instructions had a modification of instruction to elaborate the landing: Land as soft as possible; bends more on knees and hips joints; landing sound as small as possible. On the variable of Ground Reaction Force (GRF), results showed no significance between all instruction phrases (p > 0.05) except the group between the SLS and no instruction (NI) with the value of p = .026. On the variable of Knee Flexion Angle (KFA), there was significance different between the SLS and NI with the value of p = .012. Similarly, there was significance difference between SL and NI with the value of p = .029. Furthermore, there were significance different between FM and NI with the value of p < .001. In conclusion, SLS instruction phrase was able to lower the GRF. However, the KFA was the lowest in FM instruction phrase.