Effect of early progressive resistance training compared with home-based exercise after total hip replacement. A randomised controlled trial

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Introduction
Muscle strength and physical function deficits persist after total hip replacement (THR). Training effect evidence after THR is lacking. This study investigates the effect of supervised progressive resistance training in early post-THR rehabilitation on muscle strength and functional performance.
Material and Method
73 THR patients with preoperative self-assessed disability (HOOS ADL score≤67) were randomly assigned to a control group (CG, home-based exercise 7 days/week) or an intervention group (IG, home-based exercise 5 days/week and resistance training of hip and thigh muscles 2 days/week). The IG trained with loads of 10 repetition maximum from week 1 to 10 after THR. Before surgery and after the intervention, performance was evaluated by leg extension power (primary outcome), isometric strength (hip abduction + flexion), sit-to-stand test (STS), stair test and 20 meter walking speed.

Results
62 patients completed the trial (31 in each group). Leg extension power improved significantly in both groups with no between-group difference: IG (baseline-follow up): 0.28 [0.1;0.3] Watt/kg, CG: 0.26 [0.0;0.5] Watt/kg, p=0.91. 20-m walk performance improved more in IG (2.98 [1.8;4.2] sec) than in CG (1.58 [0.8;2.4] sec) (p=0.05). No significant differences were found in stair test; yet, borderline significance (p=0.06-0.09) favoured IG in STS and isometric strength.

Conclusion
7 days/week of home-based exercise was just as effective as 5 days/week of home-based exercise plus 2 days/week of supervised progressive resistance training in improving leg extension power after THA. For most of the secondary outcomes, trends were in favour of resistance training.
ClinicalTrials.gov Identifier: NCT01214954
OriginalsprogEngelsk
Udgivelsesår2014
StatusUdgivet - 2014
BegivenhedDansk Idrætsmedicinsk Årskongres - Kolding, Danmark
Varighed: 30 jan. 20141 feb. 2014

Konference

KonferenceDansk Idrætsmedicinsk Årskongres
LandDanmark
ByKolding
Periode30/01/201401/02/2014

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