Effects of home-based interval walking training on thigh muscle strength and aerobic capacity in female total hip arthroplasty patients: a randomized, controlled pilot study.
Study Goal
The researchers aimed to determine whether interval walking training (IWT) could prevent muscle atrophy and aerobic capacity impairment in female patients who had undergone total hip arthroplasty (THA).
Results Summary
IWT increased knee flexion force by 23% on the operated side and 14% on the non-operated side, while VO₂peak and anaerobic threshold improved by 8% and 13%, respectively, compared to the control group. The study concluded that IWT might be an effective home-based training regimen for THA patients.
Population
Female patients (~60 years old) who had undergone THA more than 2 months prior.
Effective Dosage
60 minutes of fast walking at >70% peak aerobic capacity (VO₂peak) per week.
Duration
12 weeks
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
interval walking training (IWT) | increase | isometric knee flexion force (FFLX) on the operated side | female patients who had undergone total hip arthroplasty (THA) | 23% | increased | #1 |
interval walking training (IWT) | increase | isometric knee flexion force (FFLX) on the non-operated side | female patients who had undergone total hip arthroplasty (THA) | 14% | increased | #2 |
control (CNT) | increase | isometric knee flexion force (FFLX) on the operated side | female patients who had undergone total hip arthroplasty (THA) | - | increased | #3 |
interval walking training (IWT) | increase | peak aerobic capacity for walking (VO₂peak) | female patients who had undergone total hip arthroplasty (THA) | 8% | increased | #4 |
interval walking training (IWT) | increase | anaerobic threshold during graded cycling exercise (VO₂AT) | female patients who had undergone total hip arthroplasty (THA) | 13% | increased | #5 |
UNLABELLED: Due to the reduced physical activity of patients who have undergone total hip arthroplasty (THA), there are no home-based exercise training regimens for preventing muscle atrophy and aerobic capacity impairment in these patients. We examined whether interval walking training (IWT) could prevented these issues. Twenty-eight female patients (∼60 years of age) who had undergone THA more than 2 months prior were randomly divided into IWT (n = 14) and control (CNT, n = 14) groups. The IWT subjects trained at a target of 60 min of fast walking at >70% peak aerobic capacity for walking (VO₂peak) per wk for 12 wk, while those in the CNT maintained their previous sedentary life during the same period. We measured the energy expenditure of the daily physical activity, except during sleeping and bathing, every minute and every day during the intervention. We also measured the isometric knee extension (FEXT) and flexion (FFLX) forces, VO₂peak, and anaerobic threshold during the graded cycling exercise (VO₂AT) before and after the intervention. All subjects, except for one in IWT, completed the protocol. FFLX increased by 23% on the operated side (P = 0.003) and 14% on the non-operated side of IWT (P = 0.006), while it only increased on the operated side of CNT (P = 0.03). The VO₂peak and VO₂AT in IWT increased by 8% (P = 0.08) and 13% (P = 0.002), respectively, and these changes were significantly higher in the IWT than in CNT group (both, P<0.05). In conclusion, IWT might be an effective home-based training regimen for preventing the muscle atrophy from reduced daily physical activity in THA patients. TRIAL REGISTRATION: UMIN-CTR UMIN000013172.