What jump rope asks of the foot, and what no study has countedEmerging evidence
Skipping is a low, quick bounce on the balls of your feet, and the calves and Achilles tendons do most of the spring. In 10 men skipping in shoes at 2.2 jumps a second, the heel barely touched down on two feet, and the highest pressures sat under the middle of the forefoot. In 26 competitive skippers doing the fast speed step, the forefoot took the greatest load, with the big toe and the joints at the base of the first three toes under the most stress. In 16 teenage boys, the big toe joints bent back more than 50 degrees, which the authors suggest could be an injury risk.
Landing forces vary between studies. Through a force plate, peaks were about 3.3 to 3.6 times body weight on one leg and 4.3 to 4.6 on two in shod men (two studies of 10), and about 2.8 to 2.9 times body weight per step in the alternate-foot step in experienced skippers; in barefoot Muay Thai athletes the reported forces were higher still, by our arithmetic from their body weights. Studies used different methods, and one study's figures can't be read as body weights, so these are rough guides, not exact numbers. Double-unders and the speed step made the ankle absorb up to about twice the power of running in 16 young competitive skippers.
No study has counted foot pain or injury from rope jumping. In a 1986 trial of 26 inactive adults, the group skipping 10 minutes a day, 5 days a week had more injuries and drop-outs than joggers, without counts, and later rope training trials report no injuries. So the map on this page is built from what each condition is known to do.
Sources 1, 2, 3, 4, 5, 6, 7, 8, 9
How many landings, and why volume is the usual storyEmerging evidence
People hop at about 2.2 times a second by preference, so by our own arithmetic 5 one-minute rounds are about 660 landings and 10 minutes over 1,000. Bone stress injuries follow an error in workload, when the number and size of the loads outstrip the bone's ability to cope. In 2 men with strain gauges on the second metatarsal, jumps strained the bone more than barefoot walking; in elite infantry recruits, 91% of stress fractures in the third training phase were metatarsal; and a review of 32 studies found high exercise intensity, training that doesn't adapt and poor equipment raised the risk of metatarsal stress fractures.
Health New Zealand lists running and jumping without enough rest, a sudden increase in activity, and worn-out shoes or hard surfaces among the causes of stress fractures, and the AAOS (American Academy of Orthopaedic Surgeons) says doing too much, too soon is a common cause. In our reading, a new rope habit, a daily challenge or a jump from 5 to 20 minutes is the commonest story, not the rope itself.
Sources 10, 11, 12, 13, 14, 15, 16
Where it hurts, and what it usually is
No study counts the causes of foot pain from skipping, so these come from the conditions' own evidence and the NHS.
- The ball of the foot: metatarsalgia, which the NHS links with exercise such as running and with tight shoes; Morton's neuroma (burning or a pebble feeling between the 3rd and 4th toes); or a plantar plate injury under the base of the second toe.
- Under the big toe joint: sesamoiditis, which the AAOS says is common in ballet dancers and runners, or a sesamoid stress fracture.
- One spot on a long foot bone: a possible stress fracture, most often of the second or third metatarsal, which take the greatest force as you push off.
- The heel and arch: plantar heel pain; the NHS names exercising on hard surfaces among its causes.
- The top of the foot: the NHS says pain there is often caused by exercise, especially running, kicking or jumping, and tight shoes.
- The shins: shin splints, which the NHS links with running or jumping on hard surfaces.
Sources 17, 18, 19, 20, 16, 21, 22, 23, 24
Who gets itEmerging evidence
In our reading: people new to skipping or coming back after a break, especially those who start with daily sessions; boxers, CrossFit athletes and class-goers adding double-unders or speed steps; people skipping on concrete or in worn, thin or tight shoes; and anyone not eating enough for their training, since low energy availability is a major risk factor for bone stress injuries. Bone stress injuries are 1.8 to 2.3 times as common in female athletes as in male athletes. People with diabetes and numb feet need to check their feet after sessions, because pain won't warn them.
Serious causes are uncommon: a stress fracture at a high-risk site, a broken bone after a fall or a tangled rope, an Achilles rupture, a hot joint, a clot, and, with diabetes, a foot ulcer or a hot, swollen foot. The warning signs pick them out.
Sources 8, 7, 25, 15
When a scan or test mattersStrong evidence
Not at first for a gradual ache under the ball of the foot, the heel or the arch: the NHS starts with rest, ice, soft insoles or pads and a GP if it hasn't improved after 2 weeks. For one spot on a bone, an X-ray comes first, but stress fractures can be hard to see early: in 64 stress fractures at the base of the second metatarsal in dancers, the first X-rays were negative in 42. The AAOS says a navicular stress fracture may need a computed tomography (CT) or MRI scan, and a sesamoid fracture an MRI or bone scan. For Morton's neuroma, a click that you notice makes it more likely, and a negative tenderness test, pressing between the toes, makes it unlikely.
Sources 17, 22, 26, 16, 27
How it usually goesEmerging evidence
No study follows foot pain from jump rope. The NHS says pain in the top of the foot usually gets better in a few weeks and suggests a GP if ball-of-foot pain hasn't improved after 2 weeks. A stress fracture usually takes 6 to 8 weeks to heal, and as long as you can feel pain, the bone is still fragile. Over 90% of athletes return to sport after a bone stress injury, but the navicular took a pooled 127 days, and navicular fractures were found after a mean of almost 10 months of symptoms.
Plantar heel pain is often slow: in 174 hospital patients, 80.5% were still affected after a year and 50% after 5 years. Sesamoiditis outcomes are mixed: in one series, 45.4% returned to pain-free sport. No one can promise a date.
Sources 21, 17, 15, 28, 29, 30, 31