The purpose of the present study was to kinematics analysis with selected Kinematic variables among three group G1 short height, G2 medium height and G3 tall players in basketball. Thirty (N=30) Basketball player of Basketball academy from NBA Academy Indore are purposively selected as a subject for present study. Further it was divided into three different heights groups of Ten (N=10), subjects each, the first group was heighted from 155 to 165 cm, second group was heighted from 166 to 175 cm  and third group was heighted from 176cm and above respectively. The entire subject ranged between ages 15 to 21 years. Videography method was used to biomechanically analysis the selected moments i.e. execution of Jump shot in Basketball. The selected kinematic variables such as Displacement of CG, player’s CG height during ball release and velocity of the ball during ball release were selected for the present study. Kinovea software was used in order to obtain the values of selected kinematic from developed stick figure. For the purpose of this study ANOVA test was used. The level of significance was set at 0.05. The result reveled significant difference in player’s cg height during ball release but the researcher failed to get the significant result in displacement of cg and velocity of the ball during ball release.

<p><strong>Background:</strong> Chronic otitis media (COM) is a recurrent infection of the middle ear and/or mastoid air cells affecting 2-3% of global population. Mastoidectomy is the mainstay of the treatment of COM. Bone drilling during mastoidectomy procedure exposes both the ears to acoustic trauma leading to sensorineural hearing loss. The present study was conducted to assess the possible deleterious effect of drilling on hearing of contralateral normal ear by monitoring pre-operative and post-operative pure tone audibility (PTA) and otoacoustic emissions (OAE). Aims and objectives were to evaluate the effect of drill- generated noise on hearing in non-operated ear during mastoidectomy in terms of hearing loss, its nature and duration and recovery of hearing loss.</p><p><strong>Methods:</strong> An observational study was carried out in ENT department at SMS medical college and hospital, Jaipur. Total 40 patients were studied. Pre-operative and post-operative PTA and OAE were studied and compared. Mean drilling time during mastoid surgery was also studied.</p><p><strong>Results:</strong> Out of 40 subjects, maximum patients were 11-20 years of age group (37.5%) with female preponderance (57.5%). All had undergone mastiodectomy. Only 6 (15%) subjects had transient sensorineural hearing loss of contralateral normal ear as determined by comparing pre-operative and post-operative PTA and OAE. The mean recovery time was 2-3 days. The study had shown significant effect of drill generated noise on hearing of contralateral healthy ear following mastoidectomy.</p><p><strong>Conclusions</strong>: Drill-generated noise can’t be lowered to a great extent therefore drilling time should be minimized during mastoid surgeries.</p>

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