Ms. Garfinkel et al., YOGA-BASED INTERVENTION FOR CARPAL-TUNNEL SYNDROME - A RANDOMIZED TRIAL, JAMA, the journal of the American Medical Association, 280(18), 1998, pp. 1601-1603
Context.-Carpal tunnel syndrome is a common complication of repetitive
activities and causes significant morbidity, Objective.-To determine
the effectiveness of a yoga-based regimen for relieving symptoms of ca
rpal tunnel syndrome. Design.-Randomized, single-blind, controlled tri
al. Setting.-A geriatric center and an industrial site in 1994-1995. P
atients.-Forty-two employed or retired individuals with carpal tunnel
syndrome (median age, 52 years; range, 24-77 years). Intervention.-Sub
jects assigned to the yoga group received a yoga-based intervention co
nsisting of 11 yoga postures designed for strengthening, stretching, a
nd balancing each joint in the upper body along with relaxation given
twice weekly for 8 weeks. Patients in the control group were offered a
wrist splint to supplement their current treatment. Main Outcome Meas
ures.-Changes from baseline to 8 weeks in grip strength, pain intensit
y, sleep disturbance, Phalen sign, and Tinel sign, and in median nerve
motor and sensory conduction time. Results.-Subjects in the yoga grou
ps had significant improvement in grip strength (increased from 162 to
187 mm Hg; P = .009) and pain reduction (decreased from 5.0 to 2.9 mm
; P = .02), but changes in grip strength and pain were not significant
for control subjects. The yoga group had significantly more improveme
nt in Phalen sign (12 improved vs 2 in control group; P = .008), but n
o significant differences were found in sleep disturbance, Tinel sign,
and median nerve motor and sensory conduction time. Conclusion.-In th
is preliminary study, a yoga-based regimen was more effective than wri
st splinting or no treatment in relieving some symptoms and signs of c
arpal tunnel syndrome.