Search terms (including MeSH terms) | Reference database | Number of identified studies | |
Date of database search | 1 January 1990 to 4 October 2018 | 4 October 2018 to 31 December 2018* | |
1. Young OR youth OR paediatric OR immature OR high school OR child or adolescent | PubMed | 3 189 034 | 78 830 |
EMBASE | 3 336 042 | 264 900 | |
Cochrane | 287 477 | 5 647 | |
EBSCO-CINAHL | 855 936 | 30 758 | |
EBSCO-SPORTDiscus | 90 420 | 1 527 | |
2. #1 AND (athlete OR sports OR athletes) | PubMed | 80 238 | 2 588 |
EMBASE | 52 692 | 5 835 | |
Cochrane | 6 284 | 322 | |
EBSCO-CINAHL | 19 493 | 1 479 | |
EBSCO-SPORTDiscus | 31 305 | 629 | |
3. #2 AND (specialization OR specialisation OR free play OR single-sport OR year-round OR deliberate practice) | PubMed | 469 | 18 |
EMBASE | 282 | 13 | |
Cochrane | 116 | 35 | |
EBSCO-CINAHL | 171 | 42 | |
EBSCO-SPORTDiscus | 326 | 13 | |
4. #3 AND (performance OR talent OR elite OR expert OR expertise OR skill-acquisition OR scholarship OR attrition OR persistence OR longevity) | PubMed | 194 | 13 |
EMBASE | 122 | 10 | |
Cochrane | 93 | 28 | |
EBSCO-CINAHL | 71 | 25 | |
EBSCO-SPORTDiscus | 176 | 11 |
*There may be slight overlap in counts between the initial and secondary searches due to inability to refine search engine to precise date in EMBASE, Cochrane, CINAHL and SPORTDiscus databases.