Then, the product was tested on prospective early childhood teachers in Langsa. Media experts and product material experts validated the product's feasibility. This research and development use Alessi and Trollip model with three steps planning, design and development. This study aims to develop a digital-based practical Qur'an learning book for prospective early childhood teachers. (2) The 0.5 kg dumbbell wrist exercise method andthe 1 kg dumbbell wrist exercise differ in how well they increase the ability of the backhandoverhead lob, but the 0.5 kg dumbbell wrist exercise has a more noticeable impact than the 1kg dumbbell wrist exercise. The outcomes of thehypothesis analysis were t-count group A 4.029 and group B t-count 5.838 while the t-tablefrom degrees of freedom n-1 + n2 - 2 is 6 + 6 - 2 = 10 and the level of confidence = 5% is 2.28.The study's main finding is that (1) beginners' backhand overhead lobs are affected by wristexercises using 0.5kg and 1kg dumbbells. Backhand overhead lob test: a tool for gathering data. A sample of 12players from PB Sehat Semarang was split into two groups of six each, representing thepopulation. (2) contrasting the efficiency of 0.5 kg and 1 kg dumbbellwrist exercises with a novice badminton player's backhand overhead lob? The research methodemployed is an experimental approach, and the treatment consists of 0.5 kg and 1 kg dumbbellwrist exercises, performed three times per week for a period of six weeks. To ascertain the impact of 0.5 kg and 1 kg dumbbell wrist exercises on beginning badmintonplayers' backhand overhead lobs.
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