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Twenty weeks of whole body resistance training improves the response of leg blood flow to feeding at rest and after exercise
Author(s) -
Phillips Bethan,
Wilkes Emilie,
Smith Kenneth,
Baker Margaret,
Rennie Michael
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.22.1_supplement.753.21
Subject(s) - resistance training , medicine , blood flow , blood flow restriction , meal , cardiology , rest (music) , physical therapy
There is little information on how resistance training affects muscle blood flow responses at rest to a meal and to prior exercise. Therefore, we studied the response to feeding with or without acute resistance exercise (RE) before and after 20 w of whole body RE training (thrice weekly, 70% 1RM, with 1RM re‐assessments monthly). Before and after training, 10 subjects, 8 male and 2 female (21–73 y), (BMI >18<28) performed 6×8 isotonic unilateral leg extensions at 75% 1RM before intermittent feeding (at 4.25×BMR for 2.5 h). Femoral artery blood flow was measured by Doppler ultrasound at rest in both legs throughout. Before training, feeding alone or exercise with feeding increased resting blood flow. After training, blood flows in all conditions were increased. Whole body resistance training increases the responses of resting leg blood flow to feeding alone or feeding after exercise. Such an adaptation is likely to increase nutrient delivery to leg muscle and help maintain muscle mass, as well as potentially increasing insulin sensitivity. Supported by UK BBSRC ((BB/XX510697/1 and BB/C516779/1) and a European Union EXEGENESIS program grant.