Abstract
The aim of this study was to evaluate whether stored iron determine the adaptive response induced by Nordic walking (NW) training combined with 10h time-restricted eating (TRE) in older adults. Twenty-four participants underwent 12-week NW training supported by 10h of TRE. The group was divided due to baseline ferritin concentration low <75 ng/ml (LF) and high level ≥ 75 ng/ml (HF). Assessment of body composition, physical fitness and blood collection was performed at baseline and post intervention. Results indicate NW+TRE induced a statistically significant decrease in ferritin levels in all participants (p=0.01). Additionally, statistically significant intergroup differences in the LF vs. HF in the reduction of serum ferritin levels (p=0.04) were observed. The procedure NW+TRE diminished HbA1c levels (p<0.01) and glucose in all participants (p=0.05). The range of HbA1c drop was more pronounced among those participants who experienced a greater decrease in the stored iron (p=0.04, η_p^2=0.17, F=4.59). Greater changes in body weight and percent of body fat were recorded in the HF group (for both p<0.01). We conclude that body iron stores determine the effects of a 12-week NW+TRE intervention on serum ferritin. The changes in HbA1c are more pronounced in subjects with a higher decrease in serum ferritin.
Presenters
Jakub KortasPost-doctoral, NIP: 584-09-55-985, Bioenergetics and Physiology of Exercise, Medical University of Gdańsk, ul. M. Sklodowskiej-Curie 3a, Pomorskie, Poland
Details
Presentation Type
Theme
KEYWORDS
HEALTH TRAINING, TIME-RESTRICTED EATING, FERRITIN
