Effects of High-intensity Warm-ups on Running Performance

Area of Science:

• Exercise Physiology
• Sports Science
• Biomechanics

Background:

• Optimizing warm-up protocols is crucial for enhancing athletic performance.
• High-intensity warm-ups (WUs) may offer performance benefits but their impact on physiological and biomechanical parameters requires investigation.
• Understanding the recovery needs post-high-intensity WU is essential for practical application.

Purpose of the Study:

• To investigate the effects of two high-intensity warm-up protocols versus a control warm-up on running performance.
• To analyze the impact of these warm-ups on physiological, neuromuscular, and biomechanical variables during time-to-limit trials (TLimT).
• To determine the optimal recovery duration needed after high-intensity WUs.

Main Methods:

• Eleven well-trained runners completed three randomized cross-over 105% maximal oxygen uptake (vVO2max) time-to-limit trials (TLimT).
• Warm-up protocols included: (i) 9x20-sec level strides, (ii) 6x6-sec uphill strides, and (iii) a 7-min control warm-up at 60%vVO2max.
• Performance, energy cost (EC), blood lactate (BLC), respiratory exchange ratio, and kinematics were measured.

Main Results:

• Both high-intensity WUs (level and uphill) resulted in significantly longer TLimT compared to the control WU.
• All WU conditions reduced energy cost (EC) and step frequency (SF), but BLC increased with high-intensity WUs.
• Kinematic variables showed no significant differences between WU conditions during TLimT, though BLC increased post-TLimT.

Conclusions:

• High-intensity warm-ups, particularly uphill strides, enhance running performance in time-to-limit trials.
• A prolonged recovery phase of approximately 18 minutes is necessary following high-intensity WUs to maximize performance benefits.
• The findings suggest a trade-off between immediate physiological stress and subsequent performance enhancement with intense warm-ups.