EFFECT OF DIFFERENT REST INTERVAL LENGTHS OF RESISTANCE EXERCISE ON SOME ATHERO- SCLEROSIS MARKERS AND INFLAMMATORY

ZAHER ETEMAD¹, HOJATOLLAH NIKBAKHT², MOHAMMAD ALI AZARBAYJANI³, MANDANA GHOLAMI⁴

¹PhD student of Exercise Physiology, Science and Research Branch, Islamic Azad University, Tehran, Iran - ²Associate Professor of Exercise Physiology, Science and Research Branch, Islamic Azad University, Tehran, Iran - ³Professor, Department of Exercise Physiology, Tehran central Branch, Islamic Azad University, Tehran, Iran - ⁴Assistant Professor, Department of Exercise Physiology, Science and Research Branch, Islamic Azad University, Tehran, Iran

The purpose of this study was to determine the effects of two resistance exercise (RE) protocols with different rest intervals between sets on homocysteine and CRP In Sedentary Men. For this purpose, 30 untrained males voluntarily participated in the research and were randomly assigned to one of two resistance exercise groups: a) a shorter inter-set rest interval of 90 second (RI- 90; n=10); or b) a longer rest interval of 180 second (RI-180; n=10) and control group (10 people).

Resistance exercise in both groups consisted of bench press; pull down curls with pulleys, biceps and triceps workout with a barbell, squat using (hack squat machine), “lat” pull down and sit-ups , which were performed with 50% of one repetition maximum in the first session and with 85% of one repetition maximum on the last session and in 8-12 repetitions in 3 sets.

Before and after 8 weeks training period blood sampling were collected from the antecubital vein preexercise. Independent and paired T Tests were used to analyze data in a meaningful level (p<0.05). Results showed that there is statistically significant reduc- tion in CRP, homocysteine levels after 8 weeks of resistance training with different rest intervals in the experimental group compared to the control group (p<0.05).

In general, we can say that the difference between rest periods in resistance training can be an important factor in changes in serum levels of homocysteine and CRP are important. These exercises might probably decrease the risk of cardiovascular disease.