PMID 30202251

Research
All papers

High-Intensity Interval Training Combined With Vibration and Dietary Restriction Improves Body Composition and Blood Lipids in Obese Adults: A Randomized Trial

Sañudo B, Muñoz T, Davison GW, Lopez-Lluch G, Del Pozo-Cruz J

Question

Does adding whole-body vibration recovery to HIIT and a hypocaloric diet improve body composition and lipid profile in overweight or obese adults?

Summary

In 40 overweight or obese adults, 8 weeks of cycling HIIT plus whole-body vibration recovery and a hypocaloric diet reduced body fat percentage, triglycerides, and total cholesterol. HIIT plus diet without vibration and diet alone did not show the same significant lipid or body-fat changes.

Methodology

  • Sedentary overweight or obese adults without diabetes or advanced cardiovascular, renal, or hepatic disease.
  • 40 participants.
  • Cycle ergometer with WBV recovery.
  • Work intervals: 1 minute.
  • Recovery: 2 minutes total; HIITWBV included 1 minute vibration during recovery.
  • Intensity: 90% HRpeak.
  • Variable with progression; ended with 5-minute cool-down.
  • 3 sessions/week.
  • 8 weeks.
  • Randomized controlled trial
  • Body fat, Waist circumference, Lipids, and Glucose were tracked.

Outcomes

Body fat

Body fat percentage decreased significantly only in HIITWBV.

HIITWBV p=.002, d=0.75.

Improved

Lipids

Triglycerides and total cholesterol decreased significantly only in HIITWBV.

Triglycerides p=.045; total cholesterol p=.029.

Improved

Body mass

Body mass did not significantly change in any group.

All p>.05.

No clear change

Glucose

Glucose did not significantly change in any group.

All p>.05.

No clear change

Insights

  • A progressive 1-minute cycling HIIT format was well attended in this screened sample.
  • The significant findings belong to the combined HIITWBV plus diet arm.
  • Diet and vibration make the intervention hard to translate as HIIT-only evidence.

Limitations

  • Small sample.
  • Hypocaloric diet in all groups confounds exercise-specific effects.
  • Short duration.
  • Specialized vibration platform.
  • Body composition measured with bioelectrical impedance.

Safety

  • No harmful effects of the 8-week exercise intervention were noted.
  • Participants with diabetes and advanced cardiovascular complications were excluded.