Abdominal Muscles; Adult; Back Muscles; Chronic Pain; Exercise Therapy; Exercise Tolerance; Female; High-Intensity Interval Training; Humans; Low Back Pain; Male; Middle Aged; Muscle Strength; Patient Compliance; Resistance Training
Abstract :
[en] INTRODUCTION: Exercise therapy (ET) is advocated as a treatment for chronic nonspecific low back pain (CNSLBP). However, therapy effect sizes remain low. In other chronic disorders, training at higher intensity has resulted in greater improvements on both general health related and disease specific outcomes compared to lower-intensity ET. Possibly, high-intensity training also improves effect sizes in CNSLBP. OBJECTIVE: To compare the effects of a high-intensity ET program with a similar moderate-intensity ET program on disability, pain, function, exercise capacity, and abdominal/back muscle strength in persons with CNSLBP. METHODS: In a randomized controlled trial, persons with CNSLBP performed a 12-wk ET program (24 sessions, 1.5 h per session, twice per week) at high-intensity training (HIT) or moderate-intensity training (MIT). Questionnaires to assess disability (Modified Oswestry Index [MODI]), pain intensity (Numeric Pain Rating Scale), and function (Patient Specific Functioning Scale), a cardiopulmonary exercise test to assess exercise capacity (V˙O2max, cycling time), and a maximum isometric muscle strength test to assess abdominal/back muscle strength (maximum muscle torque) were administered at baseline and after the training program. RESULTS: Thirty-eight participants (HIT: n = 19, MIT: n = 19) were included (mean age, 44.1 yr, SD = 9.8, 12 males). Groups did not differ at baseline. Between group differences (P < 0.01) in favor of HIT were found for MODI, V˙O2max, and cycling time. Within group improvements (P < 0.01) were found in both groups on MODI (HIT:-64%, MIT:-33%), Numeric Pain Rating Scale (HIT, -56%; MIT, -39%), Patient-Specific Functioning Scale (HIT:+37%, MIT:+39%), V˙O2max (HIT:+14, MIT:+4%), cycling time (HIT:+18%, MIT:+13%), and back muscle strength (HIT:+10%, MIT:+14%). CONCLUSIONS: High-intensity training proved to be a feasible, well tolerated, and effective therapy modality in CNSLBP. Moreover, it shows greater improvements on disability and exercise capacity than a similar ET performed at moderate intensity.
Disciplines :
Orthopedics, rehabilitation & sports medicine
Author, co-author :
Verbrugghe, J.; REVAL-Rehabilitation Research Center, BIOMED, Hasselt University, Hasselt, Belgium
Agten, A.; REVAL-Rehabilitation Research Center, BIOMED, Hasselt University, Hasselt, Belgium
Stevens, S.; REVAL-Rehabilitation Research Center, BIOMED, Hasselt University, Hasselt, Belgium
Demoulin, Christophe ; Université de Liège - ULiège > Département des sciences de la motricité > Kinésithérapie spécifique et réadaptation motrice
O Eijnde, B.; REVAL-Rehabilitation Research Center, BIOMED, Hasselt University, Hasselt, Belgium
Vandenabeele, F.; REVAL-Rehabilitation Research Center, BIOMED, Hasselt University, Hasselt, Belgium
Timmermans, A.; REVAL-Rehabilitation Research Center, BIOMED, Hasselt University, Hasselt, Belgium
Hansen, Dominique
Language :
English
Title :
Exercise Intensity Matters in Chronic Nonspecific Low Back Pain Rehabilitation
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