Publications by authors named "Kiara B Barrett"
Article Synopsis
- Calculating shoulder kinematics during overhead movements in volleyball is challenging due to issues like gimbal lock and angle coherence caused by a large range of motion.
- In a study with 15 experienced female volleyball players, various rotation sequences (YXY, ZXY, XZY, YXZ, ZYX, and XYZ) were tested using 3D motion capture to compare accuracy in measuring joint angles while attacking.
- The YXY rotation sequence had the least errors and no instances of gimbal lock, making it the recommended choice for kinematic analysis, while the XYZ sequence may be useful for specific anatomical insights.
Article Synopsis
- The study investigates how sex and squat depth influence muscle activation and movement patterns in the lower body during squats.
- Twenty active participants (10 males and 10 females) performed squats at two depths (90 deg and 120 deg knee flexion), with muscle activity measured using reflective markers and motion capture.
- Results showed that deep squats led to greater hip activation for females and differences in muscle coactivation between sexes, suggesting that incorporating deep squats could help improve strength and reduce injury risk in females.
