Conclusions Our results demonstrate that the existence of a relationship between training load and injury continues to be well supported in the literature and is strongest for subjective internal training load .
The directionality of this relationship appears to depend on the type and timeframe of load measured
Background The relationship between training load and musculoskeletal injury is a rapidly advancing area of research in need of an up date d systematic review .
The prevalence, incidence and severity of low back pain among international-level rowers
Background / aims There is a paucity of prospect i ve cohort studies investigating the incidence of  low back pain ( LBP ) in rowing . We investigated ( 1 ) the prevalence and incidence of LBP among international-level rowers in New Zeal and , ( 2 ) the relationship between training volume and LBP and ( 3 ) the effect of LBP on rowers ’ ability to train and compete . Methods This was a prospect i ve cohort study of 76 New Zeal and representative rowers , including 46 men ( mean age 22 , SD=4 ) and 30 women ( mean age 21 , SD=4 ) . Data were collected using an online question naire repeated monthly for 12 months . Results The prevalence of LBP ranged from 6 % to 25 % throughout the year . The incidence of episodes of LBP was 1.67 per 1000 exposure-hours . A total of 72 episodes of LBP were reported by 40 rowers ( 53 % ) during 12 months . Of these , 45 % had an incidental effect on training . 29 % minor , 18 % moderate and 9 % had a major effect as determined by the length of time the training was interrupted . There was a high correlation between new LBP and total training hours per month ( r=0.83 , p<0.01 ) . A previous history of LBP was a risk factor in developing new LBP ( OR 2.06 , 95 % CI 1.22 to 3.48 , p=0.01 ) . Age was also a risk factor , with the likelihood of developing LBP increasing for every year ( OR 1.08 , 95 % CI 1.01 to 1.15 , p=0.02 ) . Conclusions LBP is common among New Zeal and representative rowers . There is a high correlation between training load and the development of LBP
Conclusions Our results demonstrate that the existence of a relationship between training load and injury continues to be well supported in the literature and is strongest for subjective internal training load .
The directionality of this relationship appears to depend on the type and timeframe of load measured
Background The relationship between training load and musculoskeletal injury is a rapidly advancing area of research in need of an up date d systematic review .