Abstract:
OBJECTIVES:To evaluate effects of active bike commuting or leisure-time exercise of two intensities on peripheral insulin sensitivity (primary outcome), cardiorespiratory fitness and intra-abdominal adipose tissue mass (secondary outcomes). METHODS:188 physically inactive, healthy women and men (20-45 years) with overweight or class 1 obesity were recruited. In the 6-month trial, 130 participants were randomised to either: no intervention (CON), active commuting (BIKE) or leisure-time exercise of moderate (MOD, 50% VO2peak) or vigorous (VIG, 70% VO2peak) intensity. 100 completed follow-up testing. Exercise prescription was 5 days/week with a weekly exercise energy expenditure of 1600 kcal for women and 2100 kcal for men. Testing was performed at baseline, 3 months and 6 months. RESULTS:Peripheral insulin sensitivity (ml/min/pmol insulin/L) increased (improved) by 24% (95% CI 6% to 46%, p=0.01) in VIG compared with CON at 3 months. Peripheral insulin sensitivity increased (improved) by 20% in BIKE (95% CI 1% to 43%, p=0.04) and 26% in VIG (95% CI 7% to 47%, p<0.01) compared with CON at 6 months. Cardiorespiratory fitness increased in all exercise groups compared with CON at 6 months; but the increase was higher in those that undertook vigorous exercise than those who did moderate exercise. Intra-abdominal adipose tissue mass diminished across all exercise groups in comparison to CON at 6 months. CONCLUSIONS:Active bike commuting improved cardiometabolic health; as did leisure-time exercise. Leisure-time exercise of vigorous intensity conferred more rapid effects on peripheral insulin sensitivity as well as additional effects on cardiorespiratory fitness than did moderate intensity exercise. TRIAL REGISTRATION:NCT01962259.
journal_name
Br J Sports Medjournal_title
British journal of sports medicineauthors
Blond MB,Rosenkilde M,Gram AS,Tindborg M,Christensen AN,Quist JS,Stallknecht BMdoi
10.1136/bjsports-2018-100036subject
Has Abstractpub_date
2019-09-01 00:00:00pages
1183-1192issue
18eissn
0306-3674issn
1473-0480pii
bjsports-2018-100036journal_volume
53pub_type
杂志文章,随机对照试验abstract::In this study 180 male soccer players entered into a prospective study of injuries in 1980. They were examined again in 1988. The aim of the present study was to evaluate the course of events during their active period. The study was carried out using a questionnaire. The importance of major injuries was evaluated. Ho...
journal_title:British journal of sports medicine
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journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章
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abstract::In Part II of the study, the British Olympic track (sprint) squad cyclists demonstrated reductions in body fat index, % body fat and endomorphy (p greater than .05), increased Hb and PCV % (p greater than .05), and lowered HR at rest and in warm-up exercise (p greater than .05), but no change in leg power. Repeated in...
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pub_type: 杂志文章
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journal_title:British journal of sports medicine
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更新日期:2009-04-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2013-06-01 00:00:00
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