Nadler SF1, Steiner DJ, Petty SR, Erasala GN, Hengehold DA, Weingand KW.
OBJECTIVE: To evaluate of the efficacy and safety of 8 hours of continuous, low-level heatwrap therapy administered during sleep.
PARTICIPANTS: Seventy-six patients, aged 18 to 55 years, with acute, nonspecific low back pain.
INTERVENTIONS: Subjects were stratified by baseline pain intensity and gender and randomized to one of the following treatments: evaluation of efficacy (heatwrap, n=33; oral placebo, n=34) or blinding (unheated wrap, n=5; oral ibuprofen, n=4). All treatments were administered for 3 consecutive nights with 2 days of follow-up.
RESULTS: Heatwrap therapy was significantly better than placebo at hour 0 on days 2 through 4 for mean pain relief (P=.00005); at hours 0 through 8 on days 2 through 4 for pain relief (P<.001); at hour 0 on day 4 and at hour 0 on day 5 for mean pain relief (P<.001); on day 4 in reduction of morning muscle stiffness (P<.001); for increased lateral trunk flexibility on day 4 (P<.002); and for decreased low back disability on day 4 (P=.005). Adverse events were mild and infrequent.
CONCLUSIONS: Overnight use of heatwrap therapy provided effective pain relief throughout the next day, reduced muscle stiffness and disability, and improved trunk flexibility. Positive effects were sustained more than 48 hours after treatments were completed.
Continuous low-level heatwrap therapy was shown to provide significant therapeutic benefits in patients with acute nonspecific LBP, as indicated by increased pain relief and trunk flexibility, and it provided decreased muscle stiffness and disability when compared with placebo. No serious or significant adverse effects were observed during the use of the heatwrap.
Research is under way to evaluate heatwrap therapy in college and elite athletes, as well as in recreational golfers, with LBP. This study supports the efficacy of continuous low-level heatwrap therapy in the treatment of acute nonspecific LBP.
Nadler SF, Steiner DJ, Erasala GN, Hengehold DA, Hinkle RT, Beth Goodale M, Abeln SB, Weingand KW.
OBJECTIVE: To compare the efficacy of continuous low-level heat wrap therapy (40 C, 8 hours/day) with that of ibuprofen (1200 mg/day) and acetaminophen (4000 mg/day) in subjects with acute nonspecific low back pain.
SUMMARY OF BACKGROUND DATA: The efficacy of topical heat methods, as compared with oral analgesic treatment of low back pain, has not been established.
METHODS: Subjects (n = 371) were randomly assigned to heat wrap (n = 113), acetaminophen (n = 113), or ibuprofen (n = 106) for efficacy evaluation, or to oral placebo (n = 20) or unheated back wrap (n = 19) for blinding. Outcome measures included pain relief, muscle stiffness, lateral trunk flexibility, and disability. Efficacy was measured over two treatment days and two follow-up days.
RESULTS: Day 1 pain relief for the heat wrap (mean, 2) was higher than for ibuprofen (mean, 1.51; P = 0.0007) or acetaminophen (mean, 1.32; P = 0.0001). Extended mean pain relief (Days 3 to 4) for the heat wrap (mean, 2.61) also was higher than for ibuprofen (mean, 1.68; P = 0.0001) or acetaminophen (mean, 1.95; P = 0.0009). Lateral trunk flexibility was improved with the heat wrap (mean change, 4.28 cm) during treatment (P <|= 0.009 vs acetaminophen [mean change, 2.93 cm], P <|= 0.001 vs ibuprofen [mean change, 2.51 cm]). The results were similar on Day 4. Day 1 reduction in muscle stiffness with the heat wrap (mean, 16.3) was greater than with acetaminophen (mean, 10.5; P = 0.001). Disability was reduced with the heat wrap (mean, 4.9), as compared with ibuprofen (mean, 2.7; P = 0.01) and acetaminophen (mean, 2.9; P = 0.0007), on Day 4. None of the adverse events were serious. The highest rate (10.4) was reported in the ibuprofen group.
CONCLUSION: Continuous low-level heat wrap therapy was superior to both acetaminophen and ibuprofen for treating low back pain. According to the findings, continuous low-level topical heat wrap therapy is superior to both acetaminophen and ibuprofen, supporting its recommendation as a first-line therapy for the treatment of acute muscular low back pain.