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Cardiorespiratory Fitness and Body Composition Responses to Different Intensities and Frequencies of Exercise Training in Colorectal Cancer Survivors.

Devin, James L (författare)
Jenkins, David G (författare)
Sax, Andrew T (författare)
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Hughes, Gareth I (författare)
Aitken, Joanne F (författare)
Chambers, Suzanne K (författare)
Dunn, Jeffrey C (författare)
Bolam, Kate (författare)
Karolinska Institute, Stockholm, Sweden
Skinner, Tina L (författare)
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 (creator_code:org_t)
Elsevier BV, 2018
2018
Engelska.
Ingår i: Clinical colorectal cancer. - : Elsevier BV. - 1938-0674 .- 1533-0028. ; 17:2, s. e269-e279
Relaterad länk:
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • INTRODUCTION: Deteriorations in cardiorespiratory fitness (V˙o2peak) and body composition are associated with poor prognosis after colorectal cancer treatment. However, the optimal intensity and frequency of aerobic exercise training to improve these outcomes in colorectal cancer survivors is unknown.PATIENTS AND METHODS: This trial compared 8 weeks of moderate-intensity continuous exercise (MICE; 50 minutes; 70% peak heart rate [HRpeak]; 24 sessions), with high-intensity interval exercise (HIIE; 4 × 4 minutes; 85%-95% HRpeak) at an equivalent (HIIE; 24 sessions) and tapered frequency (HIIE-T; 16 sessions) on V˙o2peak and on lean and fat mass, measured at baseline, 4, 8, and 12 weeks.RESULTS: Increases in V˙o2peak were significantly greater after both 4 (+3.0 mL·kg-1·min-1, P = .008) and 8 (+2.3 mL·kg-1·min-1, P = .049) weeks of HIIE compared to MICE. After 8 weeks, there was a significantly greater reduction in fat mass after HIIE compared to MICE (-0.7 kg, P = .038). Four weeks after training, the HIIE group maintained elevated V˙o2peak (+3.3 mL·kg-1·min-1, P = .006) and reduced fat mass (-0.7 kg, P = .045) compared to the MICE group, with V˙o2peak in the HIIE-T also being superior to the MICE group (+2.8 mL·kg-1·min-1, P = .013).CONCLUSION: Compared to MICE, HIIE promotes superior improvements and short-term maintenance of V˙o2peak and fat mass improvements. HIIE training at a reduced frequency also promotes maintainable cardiorespiratory fitness improvements. In addition to promoting accelerated and superior benefits to the current aerobic exercise guidelines, HIIE promotes clinically relevant improvements even with a substantial reduction in exercise training and for a period after withdrawal.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Hälsovetenskap -- Omvårdnad (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Health Sciences -- Nursing (hsv//eng)

Nyckelord

Exercise oncology
Fat mass
High-intensity exercise
Lean mass
Physical activity

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