the effect of Reduced training volume to one third on retaining hormonal adaptations in sarcopenic older Women
Oral Presentation
Paper ID : 2126-SSRC
Authors
عضو هیات علمی گروه فیزیولوژی ورزشی، دانشگاه پیام نور، تهران، ایران
Abstract
Abstract:
Background: One of the major problems of the elderly is sarcopenia, which is associated with a decrease in muscle mass and strength. High Intensity Interval Resistance Training (HIIRT) has the ability to improve this condition, but it’s effect on older people is less studied. Also, determining the minimum exercise dose to maintain adaptations resulting from HIIRT in sarcopenic older women is an important and ambiguous issue. So This study investigated the effect of reduction in training volume to one third of the initial training volume on maintaining the obtaned adaptations in older women.
methods: Forty sarcopenic women were divided into an experimental group (EX=30) and a control group (C=10). The EX-group was further divided into Maintenance Training 1 (1/2 reduction in volume) (MT1=10), Maintenance Training 2 (1/3 reduction in volume) (MT2=10), and Detraining (DT=10). The participants underwent 8 weeks of resistance training, consisting of hypertrophy and strength cycles. Following this, the EX-group had a 4-week period with no exercise or a reduced training volume. Measurements were taken at three time points.
Results: After 8 weeks, the EX-group showed significant improvements in Insulin Like Growth Factor-1 (IGF-1), Myostatin (MSTN), Folistatin (Fstn), Growth Hormone (GH) and Cortisol (Cort) compared to the control group. During the volume reduction period, there were no significant differences between MT1 and MT2 groups, but both groups saw increases in IGF-1, Fstn, GH, and decreases in MSTN and Cort compared to the DT group. Conclusions: These findings suggest that performing at least one training session per week with the HIIRT protocol is crucial for maintaining hormonal adaptations in sarcopenic older women.
Background: One of the major problems of the elderly is sarcopenia, which is associated with a decrease in muscle mass and strength. High Intensity Interval Resistance Training (HIIRT) has the ability to improve this condition, but it’s effect on older people is less studied. Also, determining the minimum exercise dose to maintain adaptations resulting from HIIRT in sarcopenic older women is an important and ambiguous issue. So This study investigated the effect of reduction in training volume to one third of the initial training volume on maintaining the obtaned adaptations in older women.
methods: Forty sarcopenic women were divided into an experimental group (EX=30) and a control group (C=10). The EX-group was further divided into Maintenance Training 1 (1/2 reduction in volume) (MT1=10), Maintenance Training 2 (1/3 reduction in volume) (MT2=10), and Detraining (DT=10). The participants underwent 8 weeks of resistance training, consisting of hypertrophy and strength cycles. Following this, the EX-group had a 4-week period with no exercise or a reduced training volume. Measurements were taken at three time points.
Results: After 8 weeks, the EX-group showed significant improvements in Insulin Like Growth Factor-1 (IGF-1), Myostatin (MSTN), Folistatin (Fstn), Growth Hormone (GH) and Cortisol (Cort) compared to the control group. During the volume reduction period, there were no significant differences between MT1 and MT2 groups, but both groups saw increases in IGF-1, Fstn, GH, and decreases in MSTN and Cort compared to the DT group. Conclusions: These findings suggest that performing at least one training session per week with the HIIRT protocol is crucial for maintaining hormonal adaptations in sarcopenic older women.
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