Progressive resistance, whole body long-axis rotational training improves kicking motion motor performance

摘要

Objectives: To evaluate lower extremity muscle activation, peak resultant ground reaction force (GRF) production and quickness during performance of a kicking motion following progressive resistance, whole body long-axis rotational training. Design: Randomized, controlled study. Setting: Kinesiological research laboratory. Participants: Thirty-six healthy subjects were assigned to a training (Group 1) or to a control (Group 2) group. Main outcome measures: Time-synchronized EMG (1000Hz), peak resultant GRF (1000Hz) and two-dimensional kinematic (60Hz) data were collected as subjects responded to an audio cue by kicking a cone. Group mean change differences (MCD) were compared using independent sample t-tests. Fisher's exact tests were used to determine group differences in the proportion of subjects that displayed earlier activation responses post-training. Results: Group 1 MCD revealed earlier gluteus maximus, gluteus medius, rectus femoris, medial hamstrings, and biceps femoris activation timing than Group 2 (P≤0.006) and more Group 1 subjects displayed earlier activation of these muscles post-training (P≤0.041). Group 1 MCD also revealed earlier peak resultant GRF timing and improved "kick quickness" than Group 2 (P≤0.014) and more Group 1 subjects displayed earlier response timing for these variables post-training (P=0.035). Conclusion: Progressive resistance, whole body long-axis rotational training may improve performance during sports movements that require quick, integrated trunk-lower extremity function.