Thursday-Abstracts

Official Journal of the American College of Sports Medicine
1582 Board #174 May 30, 2:00 PM - 3:30 PM
The Effects of Progressive resistance Exercise versus a
Power-Periodization Exercise approach to Training Very
Old adults at risk for sarcopenia
Dennis Hunt, Kathy Swanick, Andrew Hovanec. Florida Gulf
Coast University, Fort Myers, FL.
(No relationships reported)
PurPOsE: The purpose of this study was to determine the most effective resistance
training program to enhance overall function in very old adults who are at risk for
experiencing sarcopenia-related health declines. Sarcopenia, a term that describes the
involuntary loss of lean muscle mass that occurs during the aging process beginning
in middle adulthood. Two exercise programs were examined in this study, progressive
resistance exercise (PRE) and periodized-power resistance (PPRT).
METhOds: The study randomized participants into two intervention groups: one
group receiving progressive resistance exercise training without a power component
and one group receiving periodized-power resistance training. The duration of each
intervention was 12 weeks, including a shared one-week familiarization phase. Pretesting
was performed prior to the beginning of the intervention and post-testing was
conducted at the conclusion of the intervention. Outcome measures included strength
assessment, functional power assessment, balance assessment, and body composition
analysis.
rEsuLTs: Nine participants completed the PRE program (mean age = 83 years)
and six participants completed the PPRT program (mean age= 81 years). The PRE
group experienced significant (p < .05) gains in strength as measured by the Leg press
1RM (+27.6%) and Chest Press 1RM (+28.7%). The PPRT group also experienced
significant (p < .05) gains in strength in Leg Press 1RM (+29.9%) and Chest Press
1RM (+20.8%). However, the PPRT group also demonstrated significant (p < .05)
improvements in functional power as measured by the Five-Times-Sit-To-Stand Test
(FTSTS).
CONCLusIONs: Both PRE and PPRT groups experienced similar significant gains
in upper and lower extremity strength. The FTSTS assessment was the only outcome
measure where there was significant difference between groups, suggesting that the
PPRT program was more effective than the PRE program in yielding adaptations in
functional power production in the study population. The study results also suggest
that a Periodized power resistance training program is safe and effective for yielding
both strength and power gains in the older adult population.
1583 Board #175 May 30, 2:00 PM - 3:30 PM
stability Of Pedometer-determined Physical activity In
2-, 4-, and 9-year Follow-up studies Of healthy Elderly
Japanese
Naofumi Yamamoto1 , Mieko Shimada2 , Naoki Nakagawa3 ,
Yasuo Kimura4 , Mamoru Nishimuta2 , Susumu S Sawada,
FACSM5 , Hidenori Asai1 , Yutaka Yoshitake6 . 1Ehime University,
Matsuyama, Japan. 2Chiba Prefectural University of Health
Sciences, Chiba, Japan. 3SANNO University, Isehara, Japan.
4 5 Saga University, Saga, Japan. National Institute of Health and
Nutrition, Tokyo, Japan. 6National Institute of Fitness and Sports
in Kanoya, Kanoya, Japan.
(No relationships reported)
BaCKGrOuNd: Understanding the stability of physical activity later in life is
important for predicting the future physical activity levels of the elderly and planning
appropriate intervention with physical activities. However, as far as we know, there
are no reports examining the stability of physical activity in the elderly using objective
measures.
Vol. 45 No. 5 Supplement S311
PurPOsE: The purpose of this study was to examine the stability of physical activity,
as assessed with pedometry, in healthy elderly Japanese over a follow-up period of
nine years.
METhOds: The participants included 191 elderly (115 males and 76 females) aged
71 at baseline who were followed from 2000 to 2008. The participants wore a waistmounted
pedometer (Yamasa, MP-300, Japan) for seven consecutive day or more at
ages 71, 73, 75, and 80. The stability of physical activity, defined as the maintenance
of the relative rank of daily steps, was examined using Spearman’s rho. In this
study, “inactive” was defined as a level of less than 4,000 steps per day (Aoyagi and
Shephard, 2010).
rEsuLTs: Compared with the baseline levels of daily steps (males; 6,946 ± 2,604
steps/day, females; 6,438 ± 2,443 steps/day), the percentages of daily steps taken at
ages 73, 75 and 80 were 89.8% (6,235 ± 2,979 steps/day), 84.4% (6,056 ± 2,808 steps/
day) and 71.1% (4,836 ± 2,559 steps/day), respectively, in the males, and 90.0% (5,795
± 2,199 steps/day), 82.9% (5,235 ± 1,846 steps/day) and 72.4% (4,810 ± 2,104 steps/
day), respectively, in the females. The stabilities of daily steps (Spearman’s rho) at
ages 73, 75 and 80 were 0.76, 0.72 and 0.67, respectively, in the males, and 0.72, 0.65,
and 0.62, respectively, in the females. The values of Spearman’s rho were larger than
0.60, suggesting a high stability of daily steps. The results of a logistic regression
analysis using gender, BMI and grip strength as the items of covariance showed
that the participants who were low in daily steps at baseline were more likely to be
“inactive” at ages 73, 75, and 80.
CONCLusION: In this study, although the number of daily steps declined with age,
the stability of the daily steps remained high over the nine years follow-up period.
Moreover, the results suggested that, even in the elderly, the current level of physical
activity is a strong predictive factor of the future level of physical activity later in life.
D-33 Free Communication/Poster - Physical
Activity Interventions/Promotion in Adults
May 30, 2013, 1:00 PM - 6:00 PM
Room: Hall C
1584 Board #176 May 30, 3:30 PM - 5:00 PM
The Effects of Concurrent Circuit Exercise Training on
Metabolic syndrome in Middle-aged Woman
Mien Mien Lee 1 , Ting Yao Wang 2 , Shao Zeng Hu 1 , Kuei Hui
Chan 1 . 1 National Taiwan Sport University, Taoyuan, Taiwan.
2 National Yang-Ming University, Taipei, Taiwan.
(No relationships reported)
Metabolic syndrome is a cluster of metabolic risk factors that comprises
hyperglycemia, dyslipidemia, abdominal obesity, and hypertension. Recent data
suggest that the prevalence of metabolic syndrome in woman is higher than in men.
Concurrent circuit exercise (CCE) is a program that combines aerobic exercise and
hydraulic resistance exercise in circuit mode.
PurPOsE: To determine the CCE program on weight, body fat percentage, waist-tohip
ration (WHR), blood pressure, fasting glucose (GLU), and lipid profile in middleaged
woman.
METhOd: Twenty-four middle-aged women were randomly assigned to CCE (45.58
± 9.09 yrs) and control (CON, 43.50 ± 10.38 yrs) groups. Subjects in CCE group
performed CCE 30 min (including 3 min warm up, 24 min main activity keeping
heart rate at 60%~80% HRmax and 3 min stretching exercise) 3 times per week for
12 weeks. Subjects in CON group did not training during the experimental period and
were asked to keep their daily life and diet as usual. Pre- and post experimental period,
the body weight, body fat percentage, WHR, blood pressure of subjects were assessed.
Fasting blood sample were also taken to determine the GLU, triglyceride (TG), total
cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), as well as calculated
the low-density lipoprotein cholesterol (LDL-C) and atherosclerosis index (AI). The
effects of the intervention (time and groups) were evaluated by two-way ANOVA with
mixed design.
rEsuLT: There were no differences between groups at pre and post of the study.
However, after the CCE training, blood GLU and TG in CCE group significantly
decreased (80.75 ± 7.84 to 74.33 ± 4.89 mg/dl, and 81.00 ± 42.92 to 67.75 ± 30.88 mg/
dl, respectively, p < 0.05).
CONCLusION: Twelve weeks of CCE training may be an effective exercise program
to prevent metabolic syndrome by reducing GLU and TG in middle-aged woman.
Key words: aerobic exercise, hydraulic resistance exercise, glucose, triglyceride
Abstracts were prepared by the authors and printed as submitted.
Thursday, May 30, 2013