Athlete Knee Valgus Max During OH SquatGlute Med MVIC During SL HopStop Hop Distance (cm)StrengthDeadlift Speed (Post-season)Speed Pre-season BW (kg)LRLRLR Squat (lbs)PostseasonPreseasonTrial 1Trial 2Trial 3Best timeAthlete #1G836.23.541%55%1891912602802901.010.990.980.98Athlete #2G896.4639%44%1861992803053150.990.990.980.97Athlete #3G82.56.45.544%47%1791802752602901.141.121.161.13Athlete #4C1305.72.248%81%1951963503253451.031.091.111.08Athlete #5F1006.34.742%70%1911843002402501.111.051.02Athlete #6F1005.83.544%74%1941973003153200.960.950.940.92Athlete #7G82.56.35.538%48%2102063103503650.9911.031.02Athlete #8F94.56.25.138%50%1821902953003601.11.121.051.04Athlete #9F905.44.847%63%1851852353003501.081.071.051.05Athlete #10F927.56.129%39%2052033453353651.071.091.111.08Athlete #11F10053.252%54%2001983503203701.091.051.081.07Athlete #12G834.63.252%62%1981982753103301.11.121.21.09Athlete #13G805.43.851%61%1771802852852800.980.991.050.97Athlete #14C1203.33.368%70%1751803402702751.021.010.990.98Athlete #15G8512.385%80%1931912752903051.091.041.061.07Athlete #16G907.46.625%28%1781802702603101.111.061.061.06Athlete #17F9660.240%92%1901893302803401.081.071.051.06Athlete #18G886.95.933%43%2011993103053100.9711.20.96Athlete #19C1158.17.317%27%2092033503303451.161.131.11.09Athlete #20C1175.65.644%44%2032003403403801.21.161.131.1Athlete #21G785.83.650%61%2051992853203301.131.111.091.08Athlete #22F826.32.439%78%1841882152502701.051.031.041.05Calculate Cohen’s D effect size and determine if a strength training intervention comparing postseason to pre-season was successful as measured by a one repetition deadlift.

1. From the given information, Postseason Preseason 280 290 305 315 260 290 325 345 240 250 315 320 350 365 300 360 300 350 335 365 320 370 310 330 285 280 270 275 290 305 260 310 280 340 305 310 330 345 340 380 320 330 250 270 Let us denote Postseason data as sample 2 and Preseason data as sample 1. Here, n1=22, n2=22Consider, x¯2=280+305+260+....+320+25022 =298.6364 s2=280-298.63642+305-298.63642+.....+250-298.6364222-1 =30.3229 x¯1=290+315+290+...+330+27022 =322.5 s1=290-322.52+315-322.52+....+270-322.5222-1 =36.2777 Consider, the pooled standard deviation, s=n1-1s12+n2-1s22n1+n2-2 =22-136.27772+22-130.3229222+22-2=33.4331 Cohen's D: d=x¯1-x¯2s=322.5-298.636433.4331=0.714 Conditions of effect size: d size of effect 0.2 Small 0.5 Medium 0.8 Large Here, the effect size is 0.714, which is nearer to 0.8. Hence, the size of the effect is large.

Answered: Calculate Cohen’s D effect size and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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Athlete			Knee Valgus Max During OH Squat	Glute Med MVIC During SL Hop	Stop Hop Distance (cm)	Strength	Deadlift		Speed (Post-season)	Speed Pre-season
		BW (kg)	L	R	L	R	L	R	Squat (lbs)	Postseason	Preseason	Trial 1	Trial 2	Trial 3	Best time
Athlete #1	G	83	6.2	3.5	41%	55%	189	191	260	280	290	1.01	0.99	0.98	0.98
Athlete #2	G	89	6.4	6	39%	44%	186	199	280	305	315	0.99	0.99	0.98	0.97
Athlete #3	G	82.5	6.4	5.5	44%	47%	179	180	275	260	290	1.14	1.12	1.16	1.13
Athlete #4	C	130	5.7	2.2	48%	81%	195	196	350	325	345	1.03	1.09	1.11	1.08
Athlete #5	F	100	6.3	4.7	42%	70%	191	184	300	240	250	1.1	1	1.05	1.02
Athlete #6	F	100	5.8	3.5	44%	74%	194	197	300	315	320	0.96	0.95	0.94	0.92
Athlete #7	G	82.5	6.3	5.5	38%	48%	210	206	310	350	365	0.99	1	1.03	1.02
Athlete #8	F	94.5	6.2	5.1	38%	50%	182	190	295	300	360	1.1	1.12	1.05	1.04
Athlete #9	F	90	5.4	4.8	47%	63%	185	185	235	300	350	1.08	1.07	1.05	1.05
Athlete #10	F	92	7.5	6.1	29%	39%	205	203	345	335	365	1.07	1.09	1.11	1.08
Athlete #11	F	100	5	3.2	52%	54%	200	198	350	320	370	1.09	1.05	1.08	1.07
Athlete #12	G	83	4.6	3.2	52%	62%	198	198	275	310	330	1.1	1.12	1.2	1.09
Athlete #13	G	80	5.4	3.8	51%	61%	177	180	285	285	280	0.98	0.99	1.05	0.97
Athlete #14	C	120	3.3	3.3	68%	70%	175	180	340	270	275	1.02	1.01	0.99	0.98
Athlete #15	G	85	1	2.3	85%	80%	193	191	275	290	305	1.09	1.04	1.06	1.07
Athlete #16	G	90	7.4	6.6	25%	28%	178	180	270	260	310	1.11	1.06	1.06	1.06
Athlete #17	F	96	6	0.2	40%	92%	190	189	330	280	340	1.08	1.07	1.05	1.06
Athlete #18	G	88	6.9	5.9	33%	43%	201	199	310	305	310	0.97	1	1.2	0.96
Athlete #19	C	115	8.1	7.3	17%	27%	209	203	350	330	345	1.16	1.13	1.1	1.09
Athlete #20	C	117	5.6	5.6	44%	44%	203	200	340	340	380	1.2	1.16	1.13	1.1
Athlete #21	G	78	5.8	3.6	50%	61%	205	199	285	320	330	1.13	1.11	1.09	1.08
Athlete #22	F	82	6.3	2.4	39%	78%	184	188	215	250	270	1.05	1.03	1.04	1.05

Calculate Cohen’s D effect size and determine if a strength training intervention comparing postseason to pre-season was successful as measured by a one repetition deadlift.

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