Project Title

EFFECTS OF SHORT-TERM RESISTANCE TRAINING ON MAXIMAL AND RAPID TORQUE CHARACTERISTICS IN OLDER MALES

Presenters

Faculty Sponsor Name

Garrett Hester

Abstract (300 words maximum)

Purpose: To identify the effects of short-term resistance training (RT) on maximal and rapid torque characteristics in older males. Methods: Eighteen untrained older males were randomly assigned to a training (TG; n = 9, age = 64.70 ± 6.91 yrs) or control (CG; n = 9, age = 65.56 ± 11.56 yrs) group. The TG performed 3 sessions per week of isokinetic RT for 4 weeks. RT sessions consisted of maximal concentric knee extensions at 45°·s-1 with an emphasis on ballistic intent for 4 sets of 10 repetitions. Maximal voluntary isometric contractions (MVICs) of the knee extensors were performed before (PRE) and after week 4 (POST) of RT on a dynamometer. Peak torque (PT), rate of torque development from onset to 30 ms and 100-200 ms, impulse from onset to 30 ms and 100-200 ms were recorded for analysis. Muscle activation via surface electromyography of the vastus lateralis was also recorded during the MVICs. Two-way (group × time) repeated measures ANOVAs were used to examine changes between groups across time. Results: No differences were present between groups for any of the dependent variables at PRE (p > 0.05). PT increased in the TG compared to the CG (17%; p = 0.034) at POST, while no other dependent variables changed. Conclusion: Four weeks of RT increased strength, but not rapid torque characteristics in older men.

Project Type

Oral Presentation (15-min time slots)

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EFFECTS OF SHORT-TERM RESISTANCE TRAINING ON MAXIMAL AND RAPID TORQUE CHARACTERISTICS IN OLDER MALES

Purpose: To identify the effects of short-term resistance training (RT) on maximal and rapid torque characteristics in older males. Methods: Eighteen untrained older males were randomly assigned to a training (TG; n = 9, age = 64.70 ± 6.91 yrs) or control (CG; n = 9, age = 65.56 ± 11.56 yrs) group. The TG performed 3 sessions per week of isokinetic RT for 4 weeks. RT sessions consisted of maximal concentric knee extensions at 45°·s-1 with an emphasis on ballistic intent for 4 sets of 10 repetitions. Maximal voluntary isometric contractions (MVICs) of the knee extensors were performed before (PRE) and after week 4 (POST) of RT on a dynamometer. Peak torque (PT), rate of torque development from onset to 30 ms and 100-200 ms, impulse from onset to 30 ms and 100-200 ms were recorded for analysis. Muscle activation via surface electromyography of the vastus lateralis was also recorded during the MVICs. Two-way (group × time) repeated measures ANOVAs were used to examine changes between groups across time. Results: No differences were present between groups for any of the dependent variables at PRE (p > 0.05). PT increased in the TG compared to the CG (17%; p = 0.034) at POST, while no other dependent variables changed. Conclusion: Four weeks of RT increased strength, but not rapid torque characteristics in older men.