4 Bodyweight Moves That Flatten Lower Belly After 40

Ditch endless crunches. Try 4 bodyweight moves that target lower abs, improve posture, and strengthen your core after 40.

5 Seated Exercises That Flatten Belly Overhang Faster Than Gym Workouts After 50

Five joint friendly seated ab moves to flatten belly overhang after 50. Build strength and posture in minutes a day.

6 Core Exercises That Flatten Lower Belly in 30 Days After 50

Target your lower abs with six expert moves that pull your waist in, support your spine, and flatten your belly after 50.
IEEE

On the Design of an Assistive Knee Exoskeleton for Flutter Kick of Diving

Abstract: During the flutter kick of diving, the thigh exerts force to drive the calf, then the calf drives the fins, and two legs alternately kick downward to provide propulsion. According to the ...