Key result
Interval exercise reduces arterial stiffness more than continuous exercise in middle-aged men.
Why the study?
To evaluate whether decreasing interval periods and increasing exercise frequency during intermittent exercise could achieve greater reductions in arterial stiffness in middle-aged adults.
Does intermittent moderate-intensity exercise improve arterial stiffness more effectively than continuous exercise in middle-aged men?
RCT (n=30)
Open-label
Randomized sequence
No
Does intermittent moderate-intensity exercise improve arterial stiffness more effectively than continuous exercise in middle-aged men?
Intermittent moderate-intensity exercise with short rest intervals is more effective than continuous exercise at acutely reducing arterial stiffness in middle-aged men.
Answers are grounded in this paper and cite their sources.
Interval formats may be prioritized for acute vascular benefits in middle-aged men; extends exercise-modality comparisons and warrants outcome trials.
By decreasing the interval periods and increasing the frequency of exercise bouts, we were able to confirm our hypothesis that middle-aged adults could achieve a greater reduction in arterial stiffness through intermittent exercise. Thirty middle-aged males were randomly divided into a control group (CON), continuous exercise group (CE), interval exercise long-long group (IELL), interval exercise long-short group (IELS), and interval exercise short-short group (IESS). The subjects performed moderate-intensity exercise on the treadmill. Cardio-ankle vascular index (CAVI) was assessed before exercise, right after the session ended, and at 30 and 60 minutes into the recovery period. Changes in values from the baseline (∆CAVI) during each measurement were used for analysis. The control group showed no significant change in ∆CAVI, while all exercise groups showed a significant decrease at 0, 30, and 60 minutes. The exercise groups had significantly lower ∆CAVI than the control group at 0 and 30 minutes. At 60 minutes, the IESS group had a significantly lower ∆CAVI than the control group. Additionally, at 0 and 30 minutes, the IELS and IESS groups had a significantly lower ∆CAVI than the CE group. Hence, interval exercise is more effective than continuous exercise regardless of the total duration, but the effectiveness depends on the interval duration and number of repetitions.
No takes yet. Share an insight, caveat, or question.
Xiao et al. (2024) conducted an RCT in Arterial stiffness (n=30). Interval exercise (four 5-minute bouts with 5-minute rest) vs. Continuous exercise (30 minutes) was evaluated on Change in Cardio-ankle vascular index (∆CAVI) at 0 minutes post-exercise (p=<0.05). Interval exercise consisting of four 5-minute bouts with 5-minute rest significantly reduced arterial stiffness compared to 30 minutes of continuous exercise in middle-aged men.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: