PMID- 16284642
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20070614
LR  - 20220408
IS  - 1938-162X (Electronic)
IS  - 1062-6050 (Print)
IS  - 1062-6050 (Linking)
VI  - 40
IP  - 3
DP  - 2005 Jul-Sep
TI  - Strength and fatigability of the dominant and nondominant hip abductors.
PG  - 203-6
AB  - CONTEXT: Contralateral muscular imbalances have been suggested to increase the 
      risk of lower extremity injury. Previous groups have assessed strength of the 
      quadriceps and hamstring muscle groups; however, no previous authors have 
      compared bilateral hip-abductor muscular performance. OBJECTIVE: To examine the 
      strength and fatigability of the hip abductors in the dominant and nondominant 
      legs. DESIGN: Single-group, repeated-measures design. SETTING: Musculoskeletal 
      laboratory. PATIENTS OR OTHER PARTICIPANTS: Forty-two healthy subjects (23 males, 
      19 females; age = 24.3 +/- 2.7 years, height = 173.4 +/- 9.8 cm, mass = 73.7 +/- 
      11.6 kg). INTERVENTION(S): Subjects performed three 5-second maximal voluntary 
      isometric contraction (MVIC) trials of the hip abductors with the dominant and 
      nondominant legs. Following the maximal strength trials, subjects performed a 
      submaximal (50% of MVIC) 30-second fatigue trial with each leg. MAIN OUTCOME 
      MEASURE(S): Peak torque (PT) was recorded from each MVIC trial. Surface 
      electromyography was used to record muscle activity during the fatigue trials. 
      Power spectral analysis was used to determine the median frequency of each 
      0.512-second portion of the fatigue trials. Median frequencies were plotted 
      against time, and linear regression was used to determine the median frequency 
      slope (MF(slope)). Data were analyzed using 2-tailed, paired t tests. RESULTS: 
      Hip-abduction PT of the dominant leg (81.0 +/- 23.7 Nm) was significantly larger 
      than that of the nondominant leg (76.1 +/- 9.9 Nm, P = 0.02). There was no 
      difference in MF(slope) between the dominant (-0.37 +/- 0.29) and nondominant 
      limbs (-0.35 +/- 0.34, P = 0.84). The PT and MF(slope) were not significantly 
      correlated (r = -0.07, P = 0.53). CONCLUSIONS: Hip-abduction strength differences 
      exist between the dominant and nondominant legs. Measures of strength and 
      fatigability were poorly related; therefore, clinicians may opt to assess hip 
      strength and fatigability independent of each another.
FAU - Jacobs, Cale
AU  - Jacobs C
AD  - University of Kentucky, Lexington, KY, USA. cjaco@lexclin.com
FAU - Uhl, Timothy L
AU  - Uhl TL
FAU - Seeley, Matt
AU  - Seeley M
FAU - Sterling, Wes
AU  - Sterling W
FAU - Goodrich, Larry
AU  - Goodrich L
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Athl Train
JT  - Journal of athletic training
JID - 9301647
PMC - PMC1250264
EDAT- 2005/11/15 09:00
MHDA- 2005/11/15 09:01
PMCR- 2005/07/01
CRDT- 2005/11/15 09:00
PHST- 2005/11/15 09:00 [pubmed]
PHST- 2005/11/15 09:01 [medline]
PHST- 2005/11/15 09:00 [entrez]
PHST- 2005/07/01 00:00 [pmc-release]
PST - ppublish
SO  - J Athl Train. 2005 Jul-Sep;40(3):203-6.