Acute Responses to Resistance and High-Intensity Interval Training in Early Adolescents

Abstract

Harris, NK, Dulson, DK, Logan, GRM, Warbrick, IB, Merien, FLR, and Lubans, DR. Acute responses to resistance and high-intensity interval training in early adolescents. J Strength Cond Res 31(5): 1177-1186, 2017-The purpose of this study was to compare the acute physiological responses within and between resistance training (RT) and high-intensity interval training (HIIT) matched for time and with comparable effort, in a school setting. Seventeen early adolescents (12.9 ± 0.3 years) performed both RT (2-5 repetitions perceived short of failure at the end of each set) and HIIT (90% of age-predicted maximum heart rate), equated for total work set and recovery period durations comprising of 12 "sets" of 30-second work followed by 30-second recovery (total session time 12 minutes). Variables of interest included oxygen consumption, set and session heart rate (HR), and rate of perceived exertion, and change in salivary cortisol (SC), salivary alpha amylase, and blood lactate (BL) from presession to postsession. Analyses were conducted to determine responses within and between the 2 different protocols. For both RT and HIIT, there were very large increases pretrial to posttrial for SC and BL, and only BL increased greater in HIIT (9.1 ± 2.6 mmol·L) than RT (6.8 ± 3.3 mmol·L). Mean set HR for both RT (170 ± 9.1 b·min) and HIIT (179 ± 5.6 b·min) was at least 85% of HRmax. V[Combining Dot Above]O2 over all 12 sets was greater for HIIT (33.8 ± 5.21 ml·kg·min) than RT (24.9 ± 3.23 ml·kg·min). Brief, repetitive, intermittent forays into high but not supramaximal intensity exercise using RT or HIIT seemed to be a potent physiological stimulus in adolescents.

Acute Cardiometabolic Responses to Multi-Modal Integrative Neuromuscular Training in Children

“…The progressive increase in HR throughout our INT protocol was consistent with other reports that examined the acute physiological responses to different modes of resistance exercise in youth [14,15,20]. During a 10-min bout of medicine ball interval training (30 s/exercise and 30 s rest/set) researchers reported that mean HR values during work sets ranged from 121.5 ± 12.3 bpm (61.1% HR peak) to 178.3 ± 9.4 bpm (89.6% HR peak) [14].…”

Food Allergen Eliminations for Obesity Reduction: A Comparison Study with Therapeutic Exercise

“…Obesity continues to rise [1, [2][3][4][5][6][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] and the causes of this disease must be identified in hopes of a lifetime cure. Once the causes such as food allergens are eliminated, this disease can be reversed with interdisciplinary protocols.…”

“…While food allergy testing and elimination have been studied for reduction of migraine headaches [7,8] and intestinal disorders [9,10], the research has not been extensive in determining the efficacy of food allergy elimination in obesity reduction. Many weight loss protocols have been examined [4, [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]26,27] but only a few studies have investigated identifying and eliminating the causes of obesity.…”

“…"PAN-5" is an effective combination of separately proven protocols and the acronym means: Portion sized meals eaten more frequently (< 2 cups, 5/d) [10,11] Aerobic-surge Exercise (brief, high intensity) for 2-minutes, 5/d) [14,16,[18][19][20][21]25,29], and Natural foods which must be eaten 5 times/day within the <2 cup maximum serving [11,12,28,[30][31][32][33].…”

“…Brief duration, High Intensity exercises have been a recent addition to the protocols used in weight loss [14][15][16][19][20][21]. A study by Fisher examined using High Intensity Interval Training (HIIT) vs.…”