(4) ACUTE BIOMECHANICAL EFFECTS OF STATIC STRETCHING VERSUS DYNAMIC STRETCHING VERSUS FOAM ROLLING ROUTINES USING MARKERLESS MOTION CAPTURE SYSTEM

Advancing technology and screening assessments are capable of monitoring biomechanics alterations. More specifically, warm-up routines have been shown to influence athletic performance.

Purpose: This study compared the effects of various warm-up routines [i.e. dynamic stretching (DS), static stretching (SS), foam rolling (FR), and control (CON)] using the functional motion analysis (FMA).

Methods: Five women (Mean±SD; age=21.8±1.6 yrs., hgt.=169.2±5.6 cm, wgt.=68.3±4.0 kg) and seven men (age=21.4±1.3 yrs., hgt.=181.4±6.7 cm, wgt.=84.1±12.2 kg) volunteered for this investigation. Subjects were screened using the FMA, consisting of 19 movements. Including shoulder ranges mobility (i.e., shoulder abduction and adduction, horizonal abduction and adduction, internal and external rotation, flexion and extension), trunk rotation, overhead squat, unilateral squats, forward lunges, single leg balance, vertical jump (VJ), unilateral VJs, static VJ, multiple unilateral VJs, and depth VJ. The 3-D MCS (DARI Motion, Scientific Analytics, Lincoln, NE) was used to analyze the kinetic and kinematic data, from which 192 variables were calculated and reported in FMA scores (i.e. composite, power, functional strength, dysfunction, vulnerability). Each subject completed four randomized experimental warm-up routines (CON, DS, SS, FR) lasting 30 minutes in duration. Focusing on total-body and primary large muscle groups. The FMA scores were collected for each pre- and post- warm-up routine. Statistical analyses were conducted using the FMA scores x warm-up routines x time (pre-test, post-test) repeated measures MANOVA.

Results: The MANOVA indicated no significant interactions (condition x time x score) (p< 0.05) (Table 01).

Discussion: The current investigation was not able to statistically demonstrate the influences of the warm-up routines. Further examination of the FMA scores during each of the warm-up routines speculates the mechanical influences following each warm-up task. Further investigations are needed to examine the effects of warm-up routines on total-body biomechanics. PRACTICAL APPLICATION: Various warm-up routines have been reported to influence exercising performances, however, movement analysis on total-body mechanics following warm-up routines has not been examined. As a coach, trainer, or athlete it is critical to understand influences and mechanical alterations on each warm-up routine.

Acknowledgements: None