PMID- 28768344 OWN - NLM STAT- MEDLINE DCOM- 20170918 LR - 20170918 IS - 1439-3964 (Electronic) IS - 0172-4622 (Linking) VI - 38 IP - 9 DP - 2017 Sep TI - Determining Bilateral Strength Imbalances in Youth Basketball Athletes. PG - 683-690 LID - 10.1055/s-0043-112340 [doi] AB - The aims of this study were: 1) to compare the strongest (D) and weakest (ND) limbs in determining muscle strength asymmetry (MSA) ratios among various muscle strength qualities and 2) to determine the relationships among various muscle strength qualities. 17 youth male basketball athletes (age=17.5+/-0.8 years; height=187.1+/-9.4 cm; body mass=81.4+/-10.1 kg) participated in this study. Knee flexor and extensor strength at 60 degrees .s(-1) was assessed for both limbs with the use of isokinetic dynamometry. Other tests involved single-leg hop (SLH), countermovement jump (CMJ) and isometric mid-thigh pull (IMTP). Statistically significant differences (p<0.05; d=0.40-0.98) were found between D and ND limbs for all strength measures. Imbalance ratio of the IMTP was significantly related to those of SLH (r=0.75, p=0.01) whereas no significant relationships between D:ND ratios were found from all other tests. Percentage agreements of MSA ranged from 64.7-88.2% between muscle strength qualities. The findings provide support for the use of field tests to detect lower-limb strength imbalances. Future research should examine the effect of different asymmetry thresholds on percentage agreements to diagnose MSA and determine its relationship to athletic performance. CI - (c) Georg Thieme Verlag KG Stuttgart . New York. FAU - Thomas, Christopher AU - Thomas C AD - Directorate of Sport, Exercise and Physiotherapy, University of Salford, Manchester, United Kingdom of Great Britain and Northern Ireland. FAU - Comfort, Paul AU - Comfort P AD - Directorate of Sport, Exercise and Physiotherapy, University of Salford, Manchester, United Kingdom of Great Britain and Northern Ireland. FAU - Dos'Santos, Thomas AU - Dos'Santos T AD - Directorate of Sport, Exercise and Physiotherapy, University of Salford, Manchester, United Kingdom of Great Britain and Northern Ireland. FAU - Jones, Paul A AU - Jones PA AD - Directorate of Sport, Exercise and Physiotherapy, University of Salford, Manchester, United Kingdom of Great Britain and Northern Ireland. LA - eng PT - Journal Article DEP - 20170802 PL - Germany TA - Int J Sports Med JT - International journal of sports medicine JID - 8008349 SB - IM MH - Adolescent MH - Basketball/*physiology MH - Biomechanical Phenomena MH - Humans MH - Isometric Contraction MH - Knee/physiology MH - Leg MH - Male MH - Muscle Strength/*physiology MH - Muscle, Skeletal/*physiology COIS- Conflict of Interest: The Authors have no conflict of interest to declare. EDAT- 2017/08/03 06:00 MHDA- 2017/09/19 06:00 CRDT- 2017/08/03 06:00 PHST- 2017/08/03 06:00 [entrez] PHST- 2017/08/03 06:00 [pubmed] PHST- 2017/09/19 06:00 [medline] AID - 10.1055/s-0043-112340 [doi] PST - ppublish SO - Int J Sports Med. 2017 Sep;38(9):683-690. doi: 10.1055/s-0043-112340. Epub 2017 Aug 2.