Sore wrists or elbows in the catch
The catch asks a lot of your wrists and shoulders: in 20 CrossFit athletes, a good clean catch went with about 92 degrees of wrist extension and plenty of outward shoulder rotation and forearm turning. Loosen your grip so the bar sits on your shoulders, try a slightly wider grip, and while it settles do pulls and shrugs, which trained jumping and strength as well as catches in an 8-week trial. Hand and finger injuries are about 15% of weightlifting injuries.
Sources 34, 11, 35
Back pain
Lift from the hang or from blocks above the knee, lighter, and reset every rep. Back injuries in elite US weightlifters were mostly strains. Check the warning signs below and our back pain guide. A teenager who lifts and has back pain that lasts more than a couple of weeks, or is worse arching back, should get it checked: our spondylolisthesis guide explains why.
Source 36
Pain below the kneecap
Most knee injuries in elite weightlifters were tendon pain. If pain just below your kneecap builds with training, follow our jumper's knee guide, and cut back the jumps and catches while it settles.
Source 36
High blood pressure, heart disease and eye conditions
A brief held breath is unavoidable above about 80% of your maximum, and it drives blood pressure very high for a moment: an average of 320/250 mmHg in 5 bodybuilders leg-pressing to failure. Breathing out slowly through a maximal leg press lowered it from 311/284 to 198/175 in 10 men. Measured just after a near-maximal clean and jerk, blood pressure was moderately raised, about 147/87, and back to normal within 15 minutes in 18 experienced lifters; peaks during the lift weren't measured.
With high blood pressure, heart disease, glaucoma or diabetic eye disease, breathe out through each rep, keep the weights moderate, and leave maximal lifts until your blood pressure is controlled and you've had advice, as our high blood pressure guide says. The American Heart Association calls strength training safe and effective for adults with and without heart disease.
Sources 37, 38, 39, 40, 41
Children and teenagers
Coached weightlifting is safe and beneficial for young people, the NSCA and British Weight Lifting say, with technique first, no adult programmes and no more than 10 young lifters per coach. Youth training statements support supervised strength training, and a review found injuries in young weightlifters uncommon, and severe ones rare, when training is supervised. In 63 children aged 10 to 12, 12 weeks of Olympic lifting improved jumping and sprinting more than jump training did, by the study's estimate. Most young people's weight-room injuries are accidents with dropped weights, which supervision prevents. Our children's exercise guide has more.
Sources 1, 42, 43, 44, 45, 46, 47
Older lifters
In a survey of 976 masters weightlifters aged 35 to 88, injuries that limited training were common, more so in men, and arthritis or chronic inflammation went with more injuries. Lift from the hang or from blocks if the floor start is too much, and keep loads where any pain settles by the next morning, as our weightlifting guide suggests.
Source 48
Pregnancy
The NHS says strength training at a gym is fine "if you do this already", but to avoid activities with a risk of falling or bumping your tummy. A bar travelling close to your body is one of those as pregnancy progresses (our view). Talk to your midwife, and see our pregnancy guide.
Source 49
Leaking
Leaking urine was reported by half of women and 9% of men in weightlifting and powerlifting. It's common and treatable, and a reason to see our pelvic floor guide and a pelvic health physiotherapist, not to stop lifting.
Source 35
No barbell
Dumbbell and kettlebell cleans teach the jump and the catch with a lighter load, and jump training on its own builds jumping about as well as the lifts do.
Sources 28, 27, 7