TY - JOUR
T1 - Reliability and agreement of isometric functional trunk and isolated lumbar strength assessment in healthy persons and persons with chronic nonspecific low back pain
AU - Verbrugghe, Jonas
AU - Agten, Anouk
AU - Eijnde, Bert O
AU - Vandenabeele, Frank
AU - De Baets, Liesbet
AU - Huybrechts, Xavier
AU - Timmermans, Annick
N1 - Copyright © 2019 Elsevier Ltd. All rights reserved.
PY - 2019/7
Y1 - 2019/7
N2 - OBJECTIVES: to assess intra/inter-operator reliability and agreement of maximum isometric abdominal and back muscle strength in a functional trunk and isolated lumbar protocol, using an isokinetic dynamometer, in healthy persons and persons with chronic nonspecific low back pain (CNSLBP).DESIGN: Test-retest.SETTING: Participants performed two assessments consisting of two protocols on the Biodex 3 system, evaluating maximum isometric back and abdominal strength in a functional trunk and isolated lumbar position. During the first assessment, each protocol was executed twice, supported by different operators.PARTICIPANTS: Healthy persons (n = 20) and persons with CNSLBP (n = 20).MAIN OUTCOME MEASURES: Intraclass Correlation (ICC), Standard Error of Measurement (SEM and %SEM), and Minimal Detectable Change (MDC) of muscle strength outcomes and seat positioning characteristics were calculated.RESULTS: Intra/inter reliability of muscle strength outcomes was excellent (ICC: 0.94-0.98), while seat positioning characteristics varied from low to high (ICC: 0-0.94). For muscle strength outcomes, %SEM ranged from 4.7 to 9.2% and MDC ranged from 14.3 to 29.8 Nm in trunk flexion and 39.1-68.5 Nm in trunk extension.CONCLUSIONS: The Biodex 3 system can be used reliably to assess maximum isometric trunk muscle strength with the aforementioned protocols in healthy persons and persons with CNSLBP. All muscle strength outcomes showed comparable agreement (%SEM < 10%).
AB - OBJECTIVES: to assess intra/inter-operator reliability and agreement of maximum isometric abdominal and back muscle strength in a functional trunk and isolated lumbar protocol, using an isokinetic dynamometer, in healthy persons and persons with chronic nonspecific low back pain (CNSLBP).DESIGN: Test-retest.SETTING: Participants performed two assessments consisting of two protocols on the Biodex 3 system, evaluating maximum isometric back and abdominal strength in a functional trunk and isolated lumbar position. During the first assessment, each protocol was executed twice, supported by different operators.PARTICIPANTS: Healthy persons (n = 20) and persons with CNSLBP (n = 20).MAIN OUTCOME MEASURES: Intraclass Correlation (ICC), Standard Error of Measurement (SEM and %SEM), and Minimal Detectable Change (MDC) of muscle strength outcomes and seat positioning characteristics were calculated.RESULTS: Intra/inter reliability of muscle strength outcomes was excellent (ICC: 0.94-0.98), while seat positioning characteristics varied from low to high (ICC: 0-0.94). For muscle strength outcomes, %SEM ranged from 4.7 to 9.2% and MDC ranged from 14.3 to 29.8 Nm in trunk flexion and 39.1-68.5 Nm in trunk extension.CONCLUSIONS: The Biodex 3 system can be used reliably to assess maximum isometric trunk muscle strength with the aforementioned protocols in healthy persons and persons with CNSLBP. All muscle strength outcomes showed comparable agreement (%SEM < 10%).
KW - Adult
KW - Chronic Disease
KW - Female
KW - Humans
KW - Isometric Contraction/physiology
KW - Low Back Pain/diagnosis
KW - Lumbosacral Region/physiopathology
KW - Male
KW - Middle Aged
KW - Muscle Strength/physiology
KW - Muscle Strength Dynamometer
KW - Muscle, Skeletal/physiopathology
KW - Range of Motion, Articular
KW - Reproducibility of Results
KW - Torso/physiopathology
U2 - 10.1016/j.ptsp.2019.03.009
DO - 10.1016/j.ptsp.2019.03.009
M3 - Article
C2 - 30995544
VL - 38
SP - 1
EP - 7
JO - Physical Therapy in Sport
JF - Physical Therapy in Sport
SN - 1466-853X
ER -