Cavar, M, Marsic, T, Corluka, M, Culjak, Z, Cerkez Zovko, I, Müller, A, Tschakert, G, and Hofmann, P. Effects of 6 weeks of different high-intensity interval and moderate continuous training on aerobic and anaerobic performance. J Strength Cond Res XX(X): 000-000, 2018-To provide practical data, we compared the training effects of 3 different programs, using a shuttle run stimulus, on aerobic and anaerobic performance, measured using the 20-m maximal shuttle run (Beep) test and 300-yd shuttle run, respectively. Forty-five physically trained men, with a mean age of 21.1 ± 1.8 years, participated. The 6-week, 12-session training programs included 2 high-intensity interval training (HIIT) protocols, with either a short (SH) or long (LH) shuttle run interval, and a continuous shuttle run (CON), which was used as a control. The training intensity was based on the maximal shuttle run speed (MASS), measured on the Beep test, to elicit the relevant values of the time to exhaustion (TTE). Short (SH) training was performed at 115-120%(MASS), with a 10-second work to 10-second rest scheme, and the number of repetitions to be completed set to 70% of each participant's maximum (∼15 repetitions). LH training was performed at an intensity of 90-95%(MASS), with the duration set to 70%(TTE) (∼4 minutes). For both SH and LH, 3 sets were completed at each session, with a 2-3 minutes of rest between sets. CON training consisted of continuous shuttle running for 35 minutes at an intensity of 70%(MASS). Both SH and LH yielded a large training effect (p < 0.01), with SH preferentially improving anaerobic performance and LH preferentially improving aerobic performance. No effect of CON training was identified. Our findings indicate that these different training protocols cannot be used interchangeably and that the Beep test is useful in prescribing the intensity and duration of HIIT.

No abstract

Concurrent smoking and harmful drinking (CSHD) in adolescence is an important public health and social problem, while participation in sports is considered as being protective against CSHD. This study aimed to prospectively evaluate the influence of various facets of sports participation on the prevalence of and initiation into CSHD of adolescents. Participants were adolescents from southern Croatia (n = 711, 43.6% females, 16 years of age at study baseline), who were tested at baseline and at follow-up (two years later). Variables included gender, age, sports factors (participation in individual and team sports, sport experience, competitive success, intensity of involvement in sports), and CSHD. The CSHD prevalence did not increase significantly over the course of the study (from 5.6% to 7.5%, p > 0.05). Binomial logistic regression with age and gender as covariates suggested that team sports participation correlated to CSHD prevalence at baseline, and follow-up, with higher risk for CSHD among those adolescents who quit team sports (OR = 9.18 and 2.68, 95%CI = 2.04–22.26 and 1.05–6.83 for baseline and follow-up, respectively), and those never involved in team sports (OR = 9.00 and 3.70, 95%CI = 2.07–39.16 and 1.57–8.72 for baseline and follow-up, respectively). A higher risk of CSHD at baseline was seen among those adolescents who were involved in sports for longer (OR = 1.66, 95%CI = 1.16–2.38). The results are discussed in the context of the fact that the study included adolescents at the age of rigid sports selection (the transition from youth to professional-level sports). Since the majority of participants began CSHD at an earlier age, further studies in subjects of a younger age range are warranted.

UVOD: Jedan od temeljnih postulata u medicini izrečen u staroj latinskoj poslovici je u zdravom tijelu zdrav duh ("Mens sana in corpore sano") nedvojbeno govori o značajnoj i neraskidivoj povezanosti tijela i duše. Brojna istraživanja pokazuju da je adekvatna i redovita tjelovježba u pozitivnoj povezanosti s dobrim zdravljem.CILJ ISTRAŽIVANJA: Ispitati povezanost tjelovježbe i duševnog zdravlja studenata. ISPITANICI I METODE: Za realizaciju cilja ovog istraživanja korišteni su: 1. opći sociodemografski upitnik, osobne izrade, namjenski sačinjen za ovo istraživanje i upitnik samoprocjene psihičkih simptoma SCL90-R (Symptom Check List 90) kojim se procjenjuje tj. mjeri devet dimenzija ličnosti. REZULTATI: Studenti fizičke kulture su statistički značajno postizali niže rezultate na podskalama opsesivno kompulzivnih simptoma, interpersonalne vurnelabilnosti, depresivnosti, anksioznosti, agresivnosti, fobija i psihotičnih obilježja u odnosu na studente medicine. Studenti ženskog spola su statistički značajno postizali više rezultate na podskalama opsesivno kompulzivnih simptoma, depresivnosti, anksioznosti i fobija u odnosu na studente muškog spola. Studenti nižih godina su pokazivali statistički značajno više depresivnosti i anksioznosti u odnosu na studente viših godina. Studenti slabog ekonomskog statusa su statistički značajno postizali više rezultate na podskalama somatizacije, paranoje i psihotičnih obilježja u odnosu na studente boljeg ekonomskog statusa. ZAKLJUČAK: Studenti fizičke kulture su statistički značajno postizali niže rezultate psihičkih simptoma i time pokazali bolje duševno zdravlje u odnosu na studente medicine.

UVOD: Rukomet je sport kompleksnih polistrukturalnih gibanja u kojima postoji čitav niz različitih kretnji i statičkih izdržaja u stavu. Zbog određenih karakteristika rukometa kao sporta rukometaši su izloženi faktorima koji mogu uzrokovati razvoj posturalnih deformiteta.CILJ ISTRAŽIVANJA: Ispitati postoji li povezanost između bilateralnih razlika i tipova tjelesnog držanja u rukometaša s igračkom pozicijom. ISPITANICI I METODE: Istraživanje je provedeno na uzorku adolescenata koji treniraju rukomet u rukometnom klubu "MI Izviđač" Ljubuški, u dobi od 13 do 18 godina, njih 98 testirali smo Adamsovim testom pretklona te proveli antropološka mjerenja. Određivanje tipova tjelesnog držanja napravljeno je pomoću fotoaparata i računala tj. programa Posture Zone. REZULTATI: Dokazano je da prevladava desnostrano skoliotično držanje u 49,0 % igrača, 34,7 % igrača ima normalno držanje, a 16,3 % ljevostrano skoliotično držanje. Ispitanici s dominantnom desnom rukom statistički značajno su učestalije imali desnostrano skoliotično držanje. Najveći broj igrača s desnostranim skoliotičnim držanjem je na poziciji lijevo krilo, a najmanje na mjestu desnog krila. ZAKLJUČAK: Rukomet može imati i negativan utjecaj zbog pojave mišićnog disbalansa i nepravilnog tjelesnog držanja.Bilateralne razlike su izražajnije u igrača koji su udaljeniji od centra.Osoba za razmjenu informacija: Vedrana Grbavac, magistra fizioterapije