This is a great one. Normally exercise and sports scientists use laboratories and exercise bikes, ergonomics carefully calibrated machines. This study looked at what happened when the athletes pushed and pulled a 2 tonne vehicle. I like the finding - |"All subjects experienced dizziness and nausea"
Metabolic Demands of “Junkyard” Training: Pushing and Pulling a Motor Vehicle
Joseph M. Berning
Berning, J.M., K.J. Adams, M. Climstein, and B.A. Stamford. Metabolic demands of “junkyard” training: Pushing and pulling a motor vehicle. J. Strength Cond. Res. 21(3): 853−856. 2007.Junkyard training involves heavy, cumbersome implements and nontraditional movement patterns for unique training of athletes. This study assessed the metabolic demands of pushing and pulling a 1,960-kg motor vehicle (MV) 400 m in an all-out maximal effort. Six male, strength-trained athletes (29 ± 5 years; 89 ± 12 kg) completed 3 sessions. Sessions 1 and 2 were randomly assigned and entailed either pushing or pulling the MV. Oxygen consumption (O2) and heart rate (HR) were measured continuously. Blood lactate was sampled immediately prior to and 5 minutes after sessions 1 and 2. Vertical jump was assessed immediately prior to and after sessions 1 and 2. During session 3 a treadmill O2max test was conducted. No significant differences (p < 0.05) in O2, HR, or blood lactate occurred between pushing and pulling efforts. O2 and HR peaked in the first 100 m, and from 100 m on, O2 and HR averaged 65% and 96% of treadmill maximum values (O2max = 50.3 ml·kg−1·min−1; HRmax = 194 b·min−1). Blood lactate response from the push and pull averaged 15.6 mmol·L−1, representing 131% of the maximal treadmill running value. Vertical jump decreased significantly pre to post in both conditions (mean = −10.1 cm, 17%). All subjects experienced dizziness and nausea. In conclusion, a 400-m MV push or pull is an exhausting training technique that requires a very high anaerobic energy output and should be considered an advanced form of training. Strength coaches must be aware of the ultra-high metabolic and neuromuscular stresses that can be imposed by this type of training and take these factors into consideration when plotting individualized training and recovery strategies.
Key Words: strongman and implement training, stress, overreaching