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Table 10 Summary conclusions and level of certainty from studies examining associations between physical fitness components and thigh/knee injuries in female, team ball sport players

From: The relationship between physical fitness attributes and sports injury in female, team ball sport players: a systematic review

Physical fitness components Relationships assessed from each study Summary conclusion Level of certainty
  # relationships demonstrating significant association with injury # relationships demonstrating no significant association with injury n/N relationship outcome (%) Practical interpretation High, moderate, low, insufficient
Univariate analyses
 Balance measures 0 2 [75] 0/2 (0%) Unknown Insufficient
 Body composition measures 1 [69] 1 [69], 2 [75], 3 [90] 1/7 (14%) No association Moderate
 Flexibility measures 0 1 [77], 1 [90], 2 [75], 4 [73] 0/8 (0%) No association Moderate
 Muscular strength measures 4 [77] 3 [77], 8 [75] 4/15 (27%) No association Moderate
 Power measures 0 4 [94] 0/4 (0%) Unknown Insufficient
Multivariate analyses
 Body composition measures 1 [75], 1 [90] 2 [69], 2 [89] 2/6 (33%) No association Moderate
 Flexibility measures 1 [73], 1 [78] 1 [63], 2 [73], 7 [62] 2/12 (17%) No association Moderate
 Muscular strength measures 0 1 [75], 5 [81] 0/6 (0%) No association Moderate
  1. Coding: n/N = number of significant associated relationships divided by total number of relationships investigated. The number of relationships is reported with the study reference number in brackets
  2. Data removed from univariate analyses’ data synthesis due to poor methodological quality and/or high risk of bias included the following: body composition measures (3 relationships [85]), muscular strength (2 relationships [65]), muscular endurance measures (2 relationships, [65]), and coordination measures (1 relationship [71]). Data removed from multivariate analyses’ data synthesis due to poor methodological quality and/or high risk of bias included the following: balance measures (1 relationship [71], 1 relationship [88]), body composition measures (1 relationship [88], 2 relationships [71]), coordination measures (5 relationships [71]), flexibility (1 relationship [88], 2 relationships [71]), and muscular strength measures (3 relationships [88])