The effect of age and body mass index on plantar cutaneous sensation in healthy women.
Eylem Tütün Yümin, Tülay Tarsuslu Şimşek, Meral Sertel and 1 others
PMID 27799700WHAT IT FOUND
In healthy women, heel and some forefoot areas felt pressure less often with older age and higher BMI.
Foot pain also rose with age and was worse in obesity. This is a link, not proof that weight or aging causes sensory loss.
Key findings
01Older women were less likely to feel the lighter 4.17 monofilament in several plantar areas, and the 25 to 44 group performed best.
02Higher BMI was associated with detecting the thicker 5.07 monofilament in right foot area 7 and left foot areas 1, 4 and 7, but not in several other tested areas.
03Foot pain frequency was higher in women 45 years old and over than in women 44 years old and below, and pain severity was higher in obese women than in normal-weight women.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study compared groups and did not test a treatment, so it cannot show that changing weight or doing foot sensation exercises would improve balance. Only healthy women were included, and women with foot skin disease, foot swelling, neurological disease, heart or lung disease, muscle or joint disease, diabetes-related nerve problems, or recent foot injury were excluded. Participants were volunteers recruited from family clinics and were mostly housewives with low education, so they may not represent all women. The authors did not measure how load was distributed on the feet, which they identified as a limitation. Foot pain was rated on a scale, but its location was not examined, so pain and sensation links in specific foot areas are unclear. Findings were not uniform across all tested plantar areas, and some age and BMI differences were limited to selected areas.
Declared interests
The authors declared no potential conflicts of interest.
The easy way to misread this
Do not read this as evidence that losing weight or doing foot sensation exercises will improve balance. The study measured plantar sensation and foot pain in healthy women and did not test an intervention or fall outcomes.