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Table 2 A summary of the sample sizes

From: The what and how of video analysis research in rugby union: a critical review

Sample size

Physical demands

Performance

Injury related

What

How

What

How

What

How

Yes (n)

Studies

Yes (n)

Studies

Yes (n)

Studies

Yes (n)

Studies

Yes (n)

Studies

Yes (n)

Studies

Number of matches

 < 10

8

[1, 49, 50, 78,79,80,81,82]

3

[83,84,85]

4

[56, 57, 86, 87]

5

[11, 12, 72, 76, 88]

1

[89]

0

 

 10–35

2

[90,91,92]

3

[71, 93, 94]

8

[20, 58]

8

[16, 17, 19, 65, 101,102,103,104]

1

[105]

1

[61]

 36–100

2

[106, 107]

0

 

6

[15, 18, 21, 55, 75, 108]

2

[62, 109]

1

[110]

1

[63]

 101–200

0

 

0

 

0

 

2

[53, 54]

0

 

0

 

 201–300

0

 

0

 

1

[13]

0

 

1

[111]

0

 

 300+

0

 

0

 

2

[14, 51]

0

 

2

[5, 52]

0

 

 Not published

0

 

1

[68]

0

 

0

     

Number of players

 < 10

0

 

0

 

0

 

0

 

0

 

0

 

 11–20

2

[78, 79]

0

 

0

 

0

 

0

 

0

 

 21–30

5

[3, 4, 7, 22, 24]

2

[68, 83]

0

 

0

 

1

[89]

0

 

 31–40

1

[91]

1

[85]

0

 

0

 

0

 

0

 

 41–50

0

 

1

[93]

0

 

0

 

0

 

0

 

 51–100

0

 

1

[94]

0

 

0

 

0

 

0

 

 101–200

0

 

0

 

0

 

0

 

0

 

0

 

 201–300

0

 

1

[71]

0

 

0

 

0

 

0

 

 300+

2

[106, 107]

0

 

1

[13]

0

 

0

 

0

 

 Not published

1

[82]

0

 

0

 

0

 

0

 

0

 

Number of events

  < 20

0

   

0

 

0

 

0

 

2

[10, 70]

 21–30

0

   

0

 

2

[11, 12]

0

 

1

[60]

 31–40

0

   

1

[57]

0

 

0

 

0

 

 41–50

0

   

0

 

1

[19]

0

 

1

[112]

 51–100

2

[50, 81]

1

[84]

0

 

0

 

0

 

4

[69, 73, 74, 113]

 101–200

0

   

1

[20]

0

 

0

 

0

 

 201–300

0

   

0

 

0

 

0

 

0

 

 301–400

0

   

0

 

3

[54, 88, 104]

1

[105]

1

[114]

 401–500

0

   

1

[58]

0

 

0

 

0

 

 501–1000

0

   

1

[96]

2

[103, 109]

0

 

0

 

 1001–2500

0

   

0

 

5

[16, 20, 36, 40, 41]

0

 

0

 

 2501–5000

0

   

0

 

0

 

0

 

0

 

 5000+

0

   

2

[15, 21]

1

[62]

3

[57, 76, 84]

2

[61, 63]