As crisp autumn breezes arrive, more people are taking to mountain trails and park paths. But for those who rarely exercise, a sudden weekend hike can quickly lead to severe joint stress. A man in his 50s recently decided on a whim to join friends for a three-hour round-trip mountain trek. While he felt fine during the walk, the next morning brought a sharp, throbbing pain inside his knee when descending stairs. Expecting the discomfort to resolve with rest, he was surprised when the pain intensified during a short walk over the weekend.
Highlighting cases like this, specialists at Uijeongbu Eulji University Hospital on Sept. 18 urged middle-aged hikers to take precautions against knee and spinal stress brought on by abrupt autumn outdoor activity. While walking and hiking enhance cardiovascular health and muscular strength, unconditioned adults who suddenly embark on steep or lengthy treks place excessive physical strain on their joints.
"If someone who leads a relatively sedentary lifestyle suddenly takes up outdoor activities in the fall or sharply escalates activity levels, it puts intense stress on the knee joints and surrounding soft tissues," said Lee Oh-sung, a professor of orthopedic surgery at Uijeongbu Eulji University Hospital. "Because age-related degenerative changes in the joints may already be underway after middle age, individuals must carefully tailor exercise intensity to their baseline fitness and joint condition."
The Heavy Impact of the Descent
Many hikers assume that climbing uphill is the most physically demanding part of a trail. In reality, descending puts far greater structural strain on the knees. As hikers walk downhill, the knees remain bent while bearing the body's full weight, absorbing repeated impact forces with every step. Orthopedic surgeons emphasize that joint loading during a descent is significantly higher than on flat terrain or during ascents. Choosing steep grades or unusually long routes compounds this burden. For middle-aged adults, specialists recommend starting with flat ground walking before attempting elevation, gradually increasing duration and intensity over time.
Furthermore, persistent joint pain should never be brushed off as routine muscle soreness. If a knee swells, catches during specific movements, or aches repeatedly when navigating stairs, a professional medical evaluation is necessary.
"Unlike mild muscle soreness that resolves after exercise, recurring joint pain accompanied by swelling or a limited range of motion signals potential joint damage," Professor Lee emphasized. "The key for middle-aged individuals is to maintain consistent movement matched to their current joint health rather than pushing through severe pain."
To safeguard the knees, hikers should warm up for 5 to 10 minutes before starting, wear well-fitting hiking boots with adequate traction, take regular breaks, and consciously shorten their stride while slowing their pace during descents.
Mind Your Back: Backpack Weight and Spinal Posture
Knees are not the only joints at risk during fall hikes; lower back strain is equally common. Prolonged walking over uneven terrain transmits continuous impact up the spine, while carrying a heavy backpack for hours overtaxes lumbar muscles. Hikers should pack lightly with essential items only, distribute weight evenly across both shoulders, and avoid leaning excessively forward or pushing for excessive speed.
Specialists also caution that lower back pain accompanied by leg numbness, a pulling sensation, or nerve-related symptoms could indicate spinal involvement rather than simple muscle fatigue, requiring prompt evaluation by an orthopedic specialist.
By pacing descents, managing backpack weight, and gradually building stamina, autumn hiking can remain a rewarding way to improve physical fitness without compromising joint health.
