About Guy Razi

Posts by Guy Razi:

Dynamic stretching

Dynamic stretching

We’ve all heard that stretching is good. Turki et al. (2011) set out to show dynamic stretching plays a role in vertical jump force. They divided their subjects into several groups- dynamic stretching with concentric warm up, dynamic stretching with isometric warm up, dynamic stretching with plyometric warm up, dynamic stretching with eccentric warm up,(…)

Marathon running and cardiac events

Marathon running and cardiac events

For a long time now, the media has played on the fact that an endurance athlete will drop dead during or shortly after an extreme endurance event such as a half marathon, marathon, triathlon or ultra-marathon. While it’s the medias job to sell headlines, a basic dose of statistics will clear this up. Maron et(…)

Greco-roman wrestlers and lactate threshold

Greco-roman wrestlers and lactate threshold

Greco-roman wrestling is arguably among the most intense sports at the Olympics. Nilsson et al 2002 published a study comparing work-time, blood lactate levels and perceived exertion of greco-roman wrestlers from the 1998 world championships. The average match lasted 427secs (just over 7 minutes) with mean periods of work and rest over the course of(…)

VO2 of Roman Legionnaires

VO2 of Roman Legionnaires

Whipp, Ward and Hassall 1998 wrote an interesting piece on the average Roman legionnaire. Keep in mind that most of our ancestors lived much more physical lives than we do now, estimating their work capacities becomes very interesting and can demonstrate how far we can go. After some brief translation from Roman Imperial units into(…)

Meat

Meat

Larsen 2003 wrote an article about meat eating and its implications in human evolution. Humans (like all primates) have always eaten meat. However, 2+mya this was done by scavenging other kills and hunting small game. 2-1.7mya a shift happened, humans began hunting in groups and they changed drastically in that time period. The extra protein,(…)

Mental health status and weightlifting

Mental health status and weightlifting

Kimura et al 2010 used the SF-36 Health Status Survey (a standardized health status questionnaire measuring different health qualities) to determine if seniors in a health education class had different effects from a weightlifting class. The SF-36 was used to compare physical functioning, role physical, bodily pain, general health, vitality, social functioning, emotional role, and(…)

Shoulder injuries in tennis players

Shoulder injuries in tennis players

Hoeven and Kibler published a review of tennis player’s shoulder injuries in 2006. In summary, overhead movements involving abduction and external rotation put extreme stress on both the rotator cuff and the shoulder capsule. Studies have previously looked at baseball pitchers and javelin throwers but until this study no review of tennis shoulder injuries had(…)