1. Changes in Muscle Mass and Strength During Follow-Up After One-Year Resistance Training Interventions in Older Adults.
- Author
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Mertz, Kenneth H., Reitelseder, Søren, Rasmussen, Morten A., Bülow, Jacob, Højfeldt, Grith, Jensen, Mikkel, Hjulmand, Morten, Lindberg, Jonas, Kramer, Mathilde U., Bechshøft, Rasmus, and Holm, Lars
- Subjects
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RESISTANCE training , *PATIENT aftercare , *HOSPITALS , *CARDIOVASCULAR fitness , *MUSCLE proteins , *MUSCLES , *HOME care services , *CROSS-sectional method , *SARCOPENIA , *COMPARATIVE studies , *DIETARY supplements , *MUSCLE strength , *EXERCISE intensity , *DESCRIPTIVE statistics , *RESEARCH funding , *AGING , *WHEY proteins , *OLD age - Abstract
The aim of this study was to investigate if home-based resistance training compared with centerbased resistance training was associated with better preservation of muscle mass and strength in older individuals, 6 months after the interventions ended. One hundred four healthy older individuals (>65 years) who had completed 1 year of either home-based lightintensity training with daily whey protein supplementation (LITW), center-based heavy resistance training with whey protein supplementation (HRTW), or daily whey protein supplementation alone (WHEY) returned for follow-up measurement 6 months after the interventions. Measures of muscle mass, strength, and power were assessed at the end of intervention as well as at follow-up. Furthermore, we compared changes in these parameters between subjects who continued resistance training (≥1 weekly training session) during follow-up (CONT) with those who stopped (STOP). Resistance training continuation during follow-up did not differ between HRTW and LITW (41 vs. 41%, P = 1.0) but was higher for both groups compared with WHEY (18%, P = 0.04-0.05). However, no between-group differences were observed between LITW/HRTW/WHEY in changes in muscle mass, strength, or power during follow-up. STOPwas associatedwith a poorer preservation of quadriceps cross-sectional area comparedwithCONT (-1.7 cm² [-0.4 to 23.0], P = 0.01, effect size: 0.79). No effect of training continuation was observed on changes in muscle strength and power. In conclusion,maintenance of muscle mass and strength is not superior after home-based resistance training comparedwith center-based training. However, training continuation seems crucial for the maintenance of muscle mass, irrespective of the training intervention. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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